Rachel Preston Prinz's Blog, page 2

CHAPTER I: The Myth of Thermal Comfort

In the “Earthship 101” slide presentation, the second slide says, “Imagine… living in a home that cost you nothing to heat or cool…” The problem with this statement is that it is wishful thinking. The base water and power systems required to run Earthships cost $60,000. Systems for heating, cooling, humidity control, and ventilation are required in almost every circumstance, but they are omitted from the Earthship design and therefore budgeting, because the “Earthship controls its own temperatures.” While this is an admirable ideal, it is not accurate, or even physically possible, which we will explain in some detail throughout this book. Regardless, a traditionally-built home’s system for mechanical, electrical, and plumbing costs around $35,000. So in buying an Earthship systems package, the owner has paid a $25,000 premium to “pre-pay” for water and power. The problem is… an owner of a traditionally-built home will spend somewhere around $20,000 over the life of their home to buy water, gas, and electric from utility companies. That means an Earthship owner pays a $5,000 premium over and above what a regular grid-tied user will pay over the lifetime of their home, plus they still need backup heat, additional solar panels and batteries for some locations, as well as humidification controls and cooling in many locations. Furthermore, Earthships commonly use propane for domestic hot water, cooking, and supplementary heating, as well as some form of gas generators for backup power for cloudy days. These are not free and those costs are not factored into the vast majority of budgets. 
Because Earthships are not designed for their specific climate, they tend to have hot and cold spots. The Earthship literature tells us that “the average temperature in an Earthship is 70 degrees.” That sounds really comfortable, right? Except that temperature is based on an average of 365 days. The research and experience of many owners tells us that up to 70% of those days will include extended periods of over and under-heating - an Earthship is often hotter than comfortable between 10am and 7pm in summer and colder than comfortable between 7pm and 9am in winter.Principles of a solar oven – why Earthships overheatThere is no other way to say it: Earthships, especially those with slanted glass and no overhangs, tend to overheat. Even in the winter. Many Earthship owners will say that even when it is -10°F outside and snow is blowing sideways in 40mph gusts, they will have to open up all the windows to cool their home off enough to be comfortable. That might be okay for a while. However, as we get older, or as our hands cannot crank windows and vents anymore, as we tire of stopping what we are doing to get up to open and close windows twice a day, or when we have to get snow off the windows when its freezing cold… this becomes a relevant maintenance issue.
A substantial amount of scientific research has been done on thermal performance of Earthships in varied American, Australian, and European climates. We will share some overviews of the findings by these researchers later in Chapter 2, but the consensus is that Earthships overheat as much as 9 months a year, depending on location. Earthships also under-heat in northern latitudes due to cloudy conditions, colder inner-earth temperatures, and the fact that earth-sheltering is designed to be used for passive cooling. That means supplementary ventilation, dehumidification, and/or heating need to be considered basic requirements for the Earthship to work. Most of the time, these additional systems are installed after the build, which can lead to unsightly additions that were not accounted for in budgeting. Acknowledging this early allows us to address these issues in the design phase, where we can make the intrusions fit beautifully into the home and plan for the financing to make it all work.
We know now why the buildings overheat, which is great because it means we can do something about it. Earthships, when they use slanted windows and no overhanging roof, are designed like solar ovens. The buildings are oriented to true south, and the slanted windows allow in too much sun. In the summer, the greenhouse can be stiflingly hot and humid. The heat is not quite as sweltering in winter, but neither is it comfortable. The temperature in the greenhouse can be “unbearable” as some owners have stated, swinging between 45°F and 95°F depending on the season. A shade cloth is often required on the greenhouse in the summer to prevent overheating. If we design this critical area correctly from the outset, we do not need that shade cloth and can avoid overheating. 
Many early Earthships did not use wall insulation. This is a problem, even in Taos. Some builders these days are insulating their Earthships, and/or putting a line of insulation as a secondary wall 4 feet outside the tire walls. The extra insulation costs money, uses more unnatural and unsustainable resources, and takes more time to build. Plus, it is yet another system that can fail. The issues that cause the need for these extra materials can be addressed with good design that speaks to your climate.
In the winter, because there are not many windows in the north-side living spaces, the north ends of the rooms stay at or near earth temperature, which is around 58 degrees in Taos, but is much lower in other parts of the world. So you have to have a sweater in part of the house and then strip to your skivvies to pass through the greenhouse to another part of the house, where you will need your sweater again. We also know now that supplemental heat is needed in winter, especially in areas where it freezes. Earthship builders in cold climates who prefer comfortable indoor temperatures are likely to a) install floor and foundation insulation, and b) install a heating system. Foundation insulation is critical because the cold can seep up from the earth and make spaces uncomfortable for anyone not wearing socks and sometimes even insulated winter boots too. Radiant floors, wood stoves, fireplaces and furnaces are all common additions in colder-climate Earthships. 
Even in the winter, non-vented Earthships with the greenhouse open to the living areas can be stiflingly hot. Supposedly, roof venting, and the new earth tubes (which are not able to be retrofitted) helps prevent overheating in the summer. However, this natural ventilation cooling technique only works in areas where humidification is of no concern. In humid or dry areas, we also need to supplement the tube and vent system with dehumidification (in humid areas) or humidification (in arid areas). Otherwise, in a humid environment, an Earthship will collect water along their interior wall surfaces, forming a vertical pool for molds and algaes to grow. This often occurs on the walls of the planting areas and edible plants end up being infected or overwatered. This is an epidemic issue among the many Earthship dwellers who do not live in an environment as arid as Taos.
This is why we discuss both active and passive thermal comfort strategies in this book.

CHAPTER I: The Myth of “Will Provide You with What You Need to Survive…”

The Earthship greenhouse is not just designed to provide a space to collect natural heat and light from the sun. It is also intended to be used as a greenhouse for growing your own food. The plants in the greenhouse are fed by a greywater system that uses reclaimed shower and sink water to water the plants, which then clean the water for use in toilets later. That is a cool idea! In the Earthship literature and books, it is emphasized that that the Earthship greenhouse can grow “all the food you need to survive.”

Of the people whose Earthships we surveyed, who we interviewed, who commented on blogs or forums, or who answered our surveys… none were able to corroborate this ideal. Certainly the greenhouses can provide some food. But, the people we spoke to said that they could not grow their own food in sufficient supply to say they were provided all they need. They used grocery stores, farmers markets, or CSAs as their primary source of food. The Earthship greenhouse served as a supplemental resource, and only seasonally, in many cases.
An architect who blogs anonymously was in the audience at one of the Earthship lectures in Australia. Afterwards, he reported in his blog that he struggled with the lifestyle and thermal performance data presented, as the presentations implied the information presented was an “undisputed truth” when in fact some of the data presented showed clearly that there were issues with performance. But, people would have to know what to look for in order to determine what parts were concerning. (This is why we attempt to explain the width and breadth of the research in Chapter 2.) He went on to question if the fish or water plants in the pond systems used for aquaponics were edible. He then calculated that in order to eat fish in the recommended dietary amounts of three times a week, you would need to harvest at least 12 fish each month. Clearly that would require a large and sophisticated system, which would put this ideal out of reach for the scale and budget of most Earthships.
This vision of providing all we need through maximizing the value of our space is awesome. We get it. We do. But it does not seem possible to produce enough food working at the scale of a single Earthship to meet this ideal.
According to the research completed by Kruis and Heun in 2007, a family of four living in an Earthship would require 98 gallons (370L) of water per day, or 37,500 gallons (135,000L) of water per year. They identified in their research that the water requirement was totally achievable in a wet place like Michigan, but those quantities could not be achieved in Hawaii, New Mexico, or Alaska. This corroborates our experience in Taos where most of the Earthship owners we know have to buy water. This makes a backup dependable water supply essential for many locations.

CHAPTER I: The Myth of “The Most Efficient, Easy to Build Construction Method on the Planet”

Earthships require extraordinary amounts of time, patience, self-education, and physical labor to build. One builder noted that he could tell if people were “real prospects” to build an Earthship by testing them on a build site. He said, “I just let ‘em pound one tire full. It takes 3 wheelbarrows of dirt and a good pounding, and the first time they do one, it can take up to two hours that will rock their entire body. If they are standing at the end of it, they might be a candidate for building their own.” How many would-be builders are really prepared for this? Several of the people we interviewed ended up injured from all that pounding. There is a price for that, too.
While Earthships might be “easy to build”, there is no promise of producing a well-built result. This is an issue inherent in using unskilled labor, no matter what the building project type. People who have never built anything will not know what not to do. This can turn your home into a giant craft project. That might be okay for the hidden stuff, but what if you really care about your home being well-built and beautifully so? Several builders in our research noted that even with years of experience in constructing other types of buildings, the Earthship proved to be a monster project to both manage and learn the techniques for. 
The most concerning part of the “most efficient” issue is that the time needed for building the home is either devoted to, or sacrificed from, daily activities. If you are not independently wealthy and require a source of income, you have to sacrifice your time to build a home (which can be a full-time job in itself); in addition to having a job to make the money to pay for the home you are building. When this happens, the sustainability of the process comes into question.
Sometimes we need help – an expert – to get things built. But it is difficult to find an expert in Earthship building who can provide the help you need and that you can afford. We heard time and again… a lack of professional assistance can totally derail a project for unseasoned builders. The Abandonment Phenomenon Nearly a third of the people who contacted us after hearing about this project wanted us to share that they had given up on their Earthship dream, sometimes in mid-build. They felt like they had lost time, money, and even faith from their Earthship experience. Some had been injured. Some ran out of money. Others ran out of patience for trying to train building inspectors in something they barely understood themselves. Others could not figure out the systems, which, as one interviewee commented “required German language knowledge or an engineering degree to make work.” Still others gave up because other teams wanting to build Earthships in their area had failed to obtain permission. The most disheartening part was that the prospective builders who were forced to quit seemed depressed and demoralized by the experience. Once we knew to look for it, this sentiment was quietly echoed in the message boards and forums. Several sources in our research commented that people they knew had spent years pouring every penny and thousands of hours of sweat equity into their Earthship, and when the project was finally complete… they lived in them for a while and then sold their home at a loss just to “get out from under it.”

CHAPTER I: The Myth of Build-Out Time and Reality Check: There is no such thing as a Global Model

While the legend is that an Earthship can be built in a few weeks, that does not seem to be most people’s experience. Most often, builder-led projects take from a few weeks to 2 months. When doing it on your own, an Earthship can easily take 2 years to build. 
The design and permitting process can also take years - first, learning for yourselves, then training the local code enforcement officials. With planning and permitting, a build can as long as 5 years. Are you ready for a multi-year camping adventure? Can you afford a hotel/rental for that time? Regardless of HOW you do it, you need a plan as well as cash flow to pull it off.
Let’s try an exercise. We are going to give you a new religion. We will not tell you what religion it is, but it is not from here, and we do not care what you were brought up as. We just want you to start being that religion, today. OK? Ready Set Go! What? You do not love that idea? Good, because we are not going to ask you to do anything of the sort because it is preposterous. It is, however, a decent metaphor to illustrate just how absurd the concept of a Global Model of design is for architecture. Many of the underlying reasons why a Global Model is infeasible are the same as why we cannot adopt a new religion from somewhere else around the world on a whim. 
First, there are cultural concerns. People around the world are building on traditions that have been developed over 10,000 years of their own settlement and technology patterns. They would be wise to be reticent to adopt a new building technology that is not proven, culturally appropriate, or technologically feasible. I think back on several projects I have worked on where sophisticated technology-based systems like water filtration systems, have been donated to worthy charities in third world countries. At first, wow! How they changed things for the better! New school uniforms were purchased from the proceeds from the sales of purified water, and a bustling business was born. But, then, a tiny plastic part broke. Suddenly, that awesome system turned into an expensive piece of wall art because the people who were gifted the technology did not have the knowledge, parts, access to alternatives, or technical know-how to repair it. 
Another great example to technological appropriateness in design came for me on a project I worked on in Peru. A non-profit organization wanted to build a 20,000 square foot multi-level concrete building and ceremonial space in a jungle that is only accessible by a 2 hour powered canoe ride. I kept asking, “How are you planning on building that?” knowing that cranes and a pump truck would be required. Someone would justify how it could happen using experimental technology that was not available in Peru. We could always have tried - spending huge amounts of money and effort to buy and ship the systems there and experiment with making it work. Finally I quit the project because I realized that my approach to design was too “traditional” and it would be an uphill battle to go simple within the context of these very big dreams. I stayed in touch, however, because I love the organization’s work. A year or so ago, I received a newsletter that announced they had finally built their facility in the jungle. When it came down to it, they built a 1,500 square foot building out of local materials and that was built by locals. However, it took them 2 years to break away from the big idea and back to something that truly worked for its place. The best news of all (for me) was that humble little building supported local crafts, culture, economies, and because of all that – it was both affordable and easily maintainable. That was good design. And it was sustainable.
Climate is another important criteria for why there can be no Global Model of architecture. There are different climates around the world and different microclimates within those climates. While ideas that work in Iran may a great place to start for ideas what might work in New Mexico, because they share similar climates, the wind directions, snowfall and rain amounts, soil types, and geography play important roles in differentiating how the designs perform. We can see this illustrated quite easily. In New Mexico, where many presume we are “all in the same climate”, there are actually 6 diverse bioregions that have different water, climate, agricultural, soil, and architectural properties. The architectural systems especially cannot be made to “fit” in all these regions. In the flat and hot desert, our traditional adobe homes with flat roofs placed directly on the ground are ideal. But in the mountainous regions, they utilize small easy-to-heat log buildings on sturdy foundations that elevate the homes out of the snow in winter. To ignore the sun or landscape is to risk overheating and/or water infiltration.
Few Earthships seem to place an emphasis on site selection for anything other than solar access and views. In one example of how this can go wrong, several Earthships were built at the Rural Earthship Alternative Community Habitat (REACH) near the Taos Ski Valley. The REACH community, despite the assertion otherwise in Garbage Warrior, is not entirely a success. Some of the Earthships at REACH are only used by the interns at Earthship Biotecture or as rentals during summer. Most often, the people staying there have no idea there are issues with these buildings because they are so happy to be part of the movement and living in the beautiful spaces with the stunning views in the summertime when the site is accessible. They most often do not recognize that those buildings are available to them for a reason – the spaces do not work for homebuyers. Homes in this prestigious area can sell for $300,000 or more – an expensive dorm room indeed! But the builders did not follow some basic but necessary design principles and thus, the buildings were difficult to sell. Not everyone wants to climb stairs in the dark to get into bed, to be colder than comfortable in winter, overheated in summer, or to go down a dark set of stairs into their closet. Or to listen to your neighbor’s conversations because the site acts like a natural amphitheater and the houses are placed too close together. Or have to abandon their essential veggie growing planters because their cat will not stop using them as a litterbox. Or to use the wench on their 4WD to drag themselves up an impassable snowboarding-worthy hill in the winter. REACH is an experimental dream that did not end up manifesting so well. Once it was removed from the Taos Plateau to a hillside just a few miles away from the original Greater World development, the weaknesses in the one-size-fits-all approach of the Earthship concept began to be revealed. Some of the issues were due to limited design understanding and poorly designed building details by novice builders, and some were due to the unique mountain climate and landscape that the design was not modified to respond to.
This is just one close example of how even small microclimatic variations can undermine the performance of a building. With every mile traveled away from Greater World, these issues become more challenging and more important to resolve. Once we get into the hot/humid regions, the idea implodes, and not just for Earthships. Buildings that work well in the high arid desert do not work well near the equator. Earthship Biotecture will go into areas hit by natural disasters to help them out by quickly building micro Earthships to try and assist in the rebuilding efforts. That is an awesome thing to do. The people in those areas need help now and they can assist, as well as attempt to work the Global aspect of their design out by modifying it for tropical climates. The only issue is that observers and users of these facilities report that the tropical models have issues, including lack of humidity control, lack of ventilation, poor lighting, wind channeling, mold, darkness, and worst of all… acting as a reservoir to capture hurricane water while shedding hurricane winds.
We need to utilize architectural tools here in New Mexico that you may not need where you are. In his article “Earthship Hype and Earthship Reality” on GreenBuildingAdvisor.com, building expert Martin Holladay points out that while a cistern may be required in New Mexico where we struggle to have enough water, a place like New England may not need the cistern because of the natural wetness of the climate and the predominance of springs and wells. Issues like this are why we need to pay attention to climate and not blindly follow the standard design when that standard does not work FOR us.
There are specific issues in the design of the Global Model Earthships. There are Code-compliance issues of not having a means of egress from every bedroom without passing through a secondary space. The new earth vents can render the berm dysfunctional and are, in some locations, wrought with snow, mold, and maintenance issues. The cisterns diminish the earth-sheltering benefits of the berm. Hidden hallways and an uninhabitable greenhouse account for an average of 50% of the space being unusable. Openings in the south wall in the living room render the greenhouse part of the space and thus create humidity and overheating issues which can rot furniture. This causes a demand for additional ventilation. The over-sizing of rooms and under-sizing of functional spaces, and the inclusion of the mechanical room and all of its noise and heat as part of the main body of the house are yet more design challenges faced by Earthship dwellers. We can do better.
The overwhelming evidence does not support a global model of design… and it is not a bias towards Earthships … neither Earthships nor any other building type works for everybody in every place. Evidently, Earthship Europe agrees, based on this quote from their website, “…concerning the Global Model (one model for everywhere) I can only say: ‘Would you built an igloo in the desert?’”Earthship Europe has modified the designs extensively to make them work for European climates, and their spinoff Flagship Europe has walked away from the Earthship concept entirely. That is one way that we can know if Earthships or any other new build type works in an area. We can ask how many more got built after the first one. And, if they changed things, what got changed? In many cases, Earthships are modified heavily so they perform adequately, often at great expense and over a long period of time. That fact is not advertised, or for that matter… even acknowledged. 
The most important factor we can suggest for those who really love this idea and want to make it work is to study everything you can about the vernacular architecture in the place you want to live. Visit every historic or archaeological site you can. Learn from these buildings and their relationship to their place, and adapt the design of your home to fit the area’s climate and existing building traditions. Then, think small. Design only what is needed for space, and then plan ahead for additions to make them easy. The Earthship firms will not guarantee that anything they design for you will be permitable, so you might as well tweak the design and make it work for you.

CHAPTER I: The Myth of “A Radically Sustainable Home Made of Recycled and Natural Materials…”

by Rachel Preston Prinz and Carrie Christopher
Just because it is organic in form does not mean it is natural. 
The Earthship literature states that 45% of a typical Earthship is made from recyclable materials. That means; a) that 45% of the materials used are removed from the recycling stream where they would be used until they cannot be used anymore, and; b) that 55% of what constitutes the Earthship is virgin material, which must be harvested, mined, manufactured, and/or transported to the site. 
Only the soil used in the berm and the earth plasters, framing, and vigas are natural. The roofing, thermal protection and rigid insulation, gutters and downspouts, EPDM, aluminum cans, plumbing, wiring, glass bottles, tires, cisterns, cooling tubes, tools, concrete, glazing for two walls of windows, window shades, glass doors, appliances, rebar, and the mechanical and plumbing system are not natural. Of these, the concrete, plumbing, and windows can amount to twice the number of those materials used in a traditional stick-built home.
Looking at the natural angle a bit deeper, the modern Earthship relies heavily on the use of concrete, which has been documented as contributing between 5% and 10% of the world's greenhouse gases. Concrete also removes oxygen from the air we breathe as it cures over its life. This can be a real issue if we have breathing issues or allergies.
In some ways, Earthships are even more polluting than other building types. They introduce toxins to oftentimes virgin land, are generally junkyards during construction, and they remove materials from the recycling stream. 
We have to be careful in how we talk about the Earthships, or any other building type. Using wishful thinking, passing on legends that are not true, and using buzzwords people have an emotional reaction to in order to trigger a belief that these buildings are recycled and natural… does not lead to better or more sustainable design. It does, however, lead to frustration for would-be builders.
We point these issues out only because we want to help address the real concerns that people have.


Asha Stout, and Carrie Christopher
Nature operates on the principles of zero waste. Trees make flowers and fruit in order to germinate and grow new versions of themselves and keep growing. Excesses of flowers and fruits are consumed by other species - they fall on the ground, decompose, feed various organisms and microorganisms, and enrich the soil. Animals and insects exhale carbon dioxide, which plants take in and use for their own growth, and then the plants release oxygen which helps us and the animals and insects with our own survival. Nitrogen from plant waste is transformed into protein by microorganisms, animals, and other plants. This continuous cycle is a symbiotic relationship: they feed us and we feed them. 
The Earth's major nutrients—carbon, hydrogen, oxygen, and nitrogen—are CYCLED and, then, once they are used and discarded to be used again, RECYCLED. Industry altered the natural equilibrium of the planet. We took substances from the Earth's crust and concentrated, altered, and synthesized them into vast quantities of modified materials that cannot safely be returned to the soil or to the earth’s original biological cycle because they are no longer made up of the primary constituents of life. We have to think of another way to make use of these used materials.
So when we want to talk about true sustainability, we begin with the familiar “Reduce, Reuse, Recycle” philosophy. First, we REDUCE our use of materials insofar as we are able. Some people would say that having an exterior and interior window wall, as is common in the newest Earthships, is a violation of the REDUCE principle. These walls are not necessary. You can have the greenhouse via other means - like a stand-alone greenhouse that can be built of all recycled or reused materials. Another way we can reduce our footprint is to literally reduce our footprint. The Phoenix Earthship, for instance, has a total area of about 5,400 square feet, of which about half is unusable because the space is devoted to greenhouse and mechanical rooms. A 5,400 SF house is not sustainable, especially when only half of it is usable. Is it really necessary? Well, that is up to you. RECYCLING is the process where used materials are remanufactured into new products by taking the material, breaking it down, and then using its raw ingredients to build something new. This prevents the waste of useful materials, reduces the consumption of virgin materials, lowers energy use, decreases air and water pollution, and lowers gas emissions. 
Downcyclingconverts used materials into products of lesser quality and reduced functionality. Making rags from old clothes and using cardboard boxes as packing or insulating material are examples of downcycling.
Upcycling, or returning the used materials into original raw form and reworking them into new forms, is what happens when we recycle aluminum and glass. Aluminum is melted down and made into new cans, saving over 90% of the energy required to make new ones from scratch. Glass works in the same way. This cycle can continue in perpetuity. Upcycling reduces the amount of waste that we produce and reduces the need for new virgin material to be mined, fabricated, or harvested. In the case of plastic, this means fewer oil wells drilled. For metals, fewer mountains mined. For paper, fewer trees felled. All around, this means less expended, or embodied, energy. The goal of upcycling is to prevent wasting potentially useful materials by making use of existing ones. 
REUSE takes a used item and reuses it, rather than putting it into the waste stream. This helps in exploiting the full potential of a material before it is discarded. So, as in the case of the tires, bottles, and cans used in Earthships, we are REUSING them, not recycling them, because we use the intact item as filler for the walls. None of those materials are going back into the production cycle; they are just making the recycling chain longer. 

CHAPTER I: The Myth of “The Most Economical Building Design in the World... (which will) cost about the same as a conventional non-sustainable home…”

The Earthships are legendary for being ultra-affordable and doable by anyone, which is exactly what Mike Reynolds hoped they would be and this ideal… this story… is what gets passed on from each generation to the next. The issue is that the data does not fully support the noble idea that adopters of this technology wanted to be true. 
There is no way around this but to face it: Earthships are one of the most expensive, most labor-intensive, most technologically demanding, and time-consuming structures out there. They are also not as sustainable as they are reported to be, which we will go into further detail about throughout this chapter. The Earthships of today cost $225+ per square foot (PSF). This is confirmed in a 2007 study by researchers Kruis and Heun, which found that the cost to build an off-grid Earthship at that time averaged $162 PSF, a grid-tied Earthship averaged $107.50 PSF, and a standard stick-frame home cost $97.75 PSF. Adding in 7 years of inflation brings those numbers close to the $225 mark of today’s builds. Several designer/builders have confirmed that their Earthships cost around $200 PSF. This data belies the assertion that the Earthships “cost about the same as a conventional home”, since a conventional home costs from 1/2 to 2/3 of that depending on the techniques used. 
The cost myth is further exacerbated by other means as well. While tires, glass bottles, and aluminum cans may be “free”… the plans and permits, excavation, tools, concrete, wood framing and vigas, roofing, cooling tubes, insulation and thermal wrap, cisterns, interior finishes, glazing for two walls of windows, shades, glass doors, appliances, and the systems… are not. Plus, nearly every piece of an Earthship is custom-fabricated and therefore comes with the delays of custom construction and often, a higher cost. If you are a do-it-yourselfer, this can be OK, but if you are paying for labor and you are on a budget… maybe not so much. Reality Check: Base costs of an EarthshipWhen we ran the numbers on a Global Model 3 bedroom Earthship, and then compared them to build budgets from our research, the base price for an unfinished building was $179,000 in U.S. dollars. 
Excavation                                                              $   20,000Tools                                                                       $     5,000Roofing                                                                   $   35,000Concrete & Rebar                                                   $   17,000Front wall framing + Windows                              $   20,000Cooling tubes                                                         $     5,000Cisterns                                                                  $     7,000Thermal wrap and poly sheets                               $   10,000Systems Package                                                    $   60,000                                                                                $ 179,000
While these base prices may seem high, and they are... many homes need these items. Building a home costs money, no matter how you go about it. Some homes cost more than others. The off-grid Earthship is one such home.
The cost issue is even further exacerbated because “early adopters” of any technology often pave the way for future builders. It can be quite expensive for the early adopter to test an idea, as they have to become a scientist: they first devise a theory – the design and plans – and then find the funding to prove the system works. Even strawbale construction, which has been around for a very long time, has only recently been accepted for use in seismic zones. This approval only came once full scale structural testing of the system had proven it to work. The change came from people taking a chance and building and then testing the system to prove it could withstand the loads. The good news is, in leading the charge for more sustainable and natural design, we improve the chances for others to get to use what we prove works.
We offer these initial costs considerations here because budgeting data for Earthships, overall, is pretty lacking or outright avoided, which might explain why so many builds run over budget. These cost considerations are also why we decided to cover building types in this book that are a bit more expensive and/or a bit more “out there”. If you are going to spend this amount of money, you should get exactly the kind of home you want. 
So let’s address some of the cost aspects of the materials typical to Earthship builds…LandOne of the factors that people often miss when planning a build is the cost of the land. The Earthship has a huge footprint of up to 3,500 square feet including the berm (this high density per square foot ratio is part of what makes it non-sustainable) which means you really need an acre to place it on. Land can cost anywhere from $5,000 to $100,000 an acre depending on where you build. To combat this, many have made the mistake of buying cheap land for their building, but cheap land usually is not ideal for settlement. We will cover why this is a bad investment and what makes an ideal build location in Chapter 4.TiresAn average Earthship requires about 900 tires for its back wall. But those tires are most likely not located on your building site. Or within 10 miles of your building site. Because, most likely, you are going to be “out there” where it is still okay to do experimental architecture. To get the tires to your site, you will need to make time to go select them out of a tire dump, which can take 20 hours or more, and then transport them the however many miles between the dump and your land. One option would be to get them all in one load on an 18-wheeler, which can carry 800 tires. But there are road access issues to address, rental and fuel costs, and driver hire issues with that. So, let’s look at a more practical option… you can get up to 50 tires piled and tied into the bed of a standard pickup truck and get it done in 16 loads. (Have you budgeted to sell your fuel-efficient hybrid and get a pickup truck?) How much mpg does the truck get? What is that cost per load? Times 16 loads? According to the EPA report, “Scrap Tires: Handbook on Recycling Applications and Management for the U.S. and Mexico” from December 2010, the cost of transporting one tire in an average 25 mile haul (12.5 miles each way) is nearly $0.50. Multiply that by 900 tires and we have a fuel cost of $450 for tires. 
A horse trailer would be another great option for this work. Know someone who has one you can borrow?
There is a lot of debate on whether the tires are a good idea or not because of potential off-gassing of dangerous chemicals. To learn more about this debate, see Tires and the Off-gassing Issue and Chapter 2.CansThe average number of uncrushed soda and beer cans used in an Earthship is 10,000. You can drink all that yourselves, but it comes at a price - buying the drinks - which you may well do for a two year build using volunteers. But you can get creative too! One of the most ingenious ways we have heard of is from a renowned Earthship build in Canada. Manitoba Earthship Project partnered with the Winnipeg Folk Festival to collect the cans from the recycling bins at the festival! That garnered them more 12,000 cans in one week. However you get the cans, if you do not get them delivered, you need to get them to the site. If you pack them well, you can get 4,000 cans in the bed of a pickup truck. That is three loads, for planning purposes. Then, you want to budget time and water for washing them out so the house does not reek of beer and soda or attract pests. Glass BottlesYou will need 2,000 bottles to make the standard 1,000 bottle bricks for the beautiful bottle walls. Those easily fit in one truckload if you pack them tightly and organized like a honeycomb. More likely, however, you will do it in several less organized truckloads as you are able to go to the recycle center and sort them. Predict three loads minimum for that. Plan 2 hours for sorting and bagging per load. You will want to plan for enough water and cleaning time to get these cleaned up as well. An easy way of getting all the bottles you need in one day might be to partner with a local wine festival and take all their empties. You might not get the colors you want, but you will get a lot of bottles quickly. Like with the cans, the number of loads and gas required to bring them back to your site will depend on the vehicle used and distance traveled. Cement and ConcreteWe did a takeoff off of plans for a Global Model Earthship to help budget for cement and concrete costs. Contrary to popular belief, concrete makes up the majority of the materials used in the build. Here is the overview of how much concrete might be needed: (Please note that haul numbers do not include sand or aggregate.)
Hidden CostsOne thing we noticed in the research – mileage and time is not included in the budgets for most builds. Now add volunteer’s driving time and mileage, plus the mileage for family and friends who help, inspectors, and near daily trips to the hardware store or into town for more water. Fuel costs and time involved are real hidden costs that can make or break a project. When added to the cost of feeding, watering, and insuring volunteers, these hidden costs can derail a build. 
Additional costs to plan in advance for:Propane costs for cooking, clothes drying, space heating, and on-demand water heating.Backup water supply.Backup power supply.Re-mudding the earth plaster each year.Re-staining or oiling the exterior wood each year. Periodic septic cleanouts.Periodic cistern cleanouts.PV battery banks should be replaced every 15 years.PV panels should be replaced every 25 years.
Emotional CostsOne of the negative factors that came up repeatedly in our research is the emotional cost of building an Earthship. A build can negatively impact a person’s: sense of privacy, financial stress, employment, physical state, happiness, and sense of comfort and safety. A build can also have an impact on a person’s relationships with people in general, and their relationship with their spouse in particular. This is something to consider for those who might want to build a home inspired by the Earthship model, especially for those who may be especially sensitive to these energies and emotions. There is more to discuss about the affordability equation and it deals with more of the legends around the Earthships. 
Bear with us as we try and explain...

CHAPTER I: The Earthship Reality Project: Opening

by Rachel Preston Prinz, Pratik Zaveri, and Asha Stout
A n Earthship is constructed of three exterior walls (west, north, and east, in the northern hemisphere; west, south, and east in the southern hemisphere), of used automobile tires rammed or compacted with 300-400 pounds of soil, and stacked, bricklike, to a height of 8 feet or so. The floor plan of an Earthship averages about 1700 square feet (SF) or 160 square meters (SM). Interior plumbing walls are traditionally-framed and the remaining walls are most often constructed of salvaged aluminum drink cans or glass bottles placed in concrete. The houses are large and feel organic in their form.
In most Earthships, there is a slanted glass greenhouse on the south face of the structure which opens to the main body of the house. Due to the overheating this causes, in the newest models, the greenhouse - which now has nearly vertical or true vertical windows - is separated from the main body of the house with a wall of windows and doors. The greenhouse hallway between the outside window wall and the interior window wall is used for growing plants and vegetables year-round and it is intended to perform the function of a solar thermal battery.
The metal panel roof collects rainwater and an underground piping system funnels it to cisterns usually located in the sloped earth berm behind the house on the north. The water is filtered and pressurized to provide running water for sinks, showers, and baths in a system called a Water Organizing Module. If the water is stored for long periods of time, it is treated to prevent microbial growth. Greywater from sinks and showers is cleaned via a grease trap and delivered to interior planters, and then to toilets. Water is then moved outside to a septic tank or a blackwater botanical waste treatment cell and then, if required by Code (most often it is), to a septic field.
In the Earthship concept, photovoltaic panels and/or small wind turbines store enough energy to supply all the houses’ power needs. In principal, the Earthship’s main heating source is the sun, captured via the greenhouse on the south face of the structure, and cooling is provided by natural ventilation. A berm on the north side of the structure is intended to provide thermal improvement, helping to maintain the Earthship at or near a comfortable inner-earth temperature near 58 degrees. A recent addition to the model - long vent tubes passing through the berm - are intended to bring fresh air into the structure to improve occupant comfort. These passively-inspired design techniques sometimes work, and sometimes do not… requiring additional heating and/or cooling depending on location… which we will explain in some detail in later sections.



According to the Earthship website and literature, Earthships are sustainable, use recycled materials, will work anywhere in the world, and will give us everything we need to survive. They also aim to be the most adaptable, affordable, fastest, and easiest to build building in the world, and they will give you the best resale value of any other options available.
However, if this was accurate, we would not be writing this book.
It can be said that the Pros of the Earthship model are:
Energy efficiency: the buildings utilize solar and/or geothermal heat, cooling and hot water, and provide rain and greywater harvesting. Self-sustainability: you can grow veggies inside, use and reuse water, and minimize impact on the environment. Ease of construction: in principle, anyone can build an Earthship. If you can pound dirt, you can do it. “Recycling”: some of the materials used come from waste products that would otherwise fill up a landfill, or are made from recycled materials. Natural light: these buildings have it in abundance.
Not all of these pros are as pro as they seem. As we come to learn more about what the underlying processes are, maybe not. What follows through the end of this chapter may be considered the Earthship’s cons.
We should mention here that many of the titles that follow are in quotes. When that happens it is because we are quoting the various theories presented in the Earthship films, website, and literature. When you see something in italics, it is a direct quote from the listed source. Also, because this book is written from the point of view of a conversation between friends, we use the term “you” when what we are talking about is something we cannot help you with here, and “we“ when it is something this book can help you with or is an approach we take in our offices. 
I use “I” when sharing something from my own life. 
Please also note that because many of the Earthships are in Taos, we talk about the Taos climate in detail. We do that because we want to show you how the design works in this climate, so you know what to look for in your area. But we focus on helping out most… in the place we know best.

myth·os Noun: mythos; plural noun: mythoi1.        myth or mythology.A set of beliefs or assumptions about something.
The term mythology used in reference to a type of building may seem surprising. But it is really not so far of a stretch. The Earthship is just that – a building ideal based on beliefs and assumptions that are passed on by the use of traditional storytelling elements. 
Mike Reynolds and Earthship Biotecture have used traditional storytelling in the form of sharing both established and new myths to illustrate their story to their fans since the beginning of their efforts to birth Earthships into the world. These stories have become part of the mythos of Earthships worldwide. 
Reynolds says in Garbage Warrior that his hero is the Biblical character Noah, a reiteration of the story Earthship Volume 1 opens with: the story of Noah and the Ark. In the relating of the story, the book talks about “the fact” that Noah saw the clouds before the great flood and knew he needed to build a ship before the coming deluge.
This is relevant, when we start to ask questions about how the Earthships work. Because, like the Noah story, the factuality of which has been debated since that story was written down hundreds and maybe even thousands of years after it happened, if it happened… what IS – how the Earthships work and if the buildings do what they aspire to – and the ideals they are inspired to make happen … are not yet in agreement. 
But that is the beauty of inspiration: it leads to salvation. At least, in the Noah story it does. Hopefully, eventually, the Earthships and other sustainably designed buildings will help us to achieve a better lifestyle than that which we have been offered. 
And that is the whole point of having an ideal, and a story, isn’t it? 

 

Background and Methodology

An Earthship is a trademarked building type introduced in the 1970’s and designed by architect Michael “Mike” Reynolds through his firm Earthship Biotecture (previously known as Solar Survival Architecture). Because of the worldwide dissemination of the concept since, the term Earthship… generally accepted as meaning something to the effect of “underground house with a solar wall”… has become part of the common lexicon. It is as synonymous with calling a drink that is sparkly, sweet, and caramel colored a “coke” even if it is not the original Coca Cola product. We are going to use the common parlance in this book, and use the term Earthship to refer to any building built on the methodology, even if it is a modified version of the original trademarked design.

In principle, Earthships:Use recycled waste tires, glass bottles, and cans along with natural materials and concrete to construct a structure that is intended to have minimal impact on the environment.Make their own water using the roof’s gutter system to direct rain and snow to cisterns where it is stored. Then a gravity-fed Water Organizing Module filters, pressurizes, and pumps the stored water to sinks, showers, bath faucets, and sometimes to solar thermal hot water heaters. After the filtered rain water is used once, it is directed to rubber-lined greywater planters to be filtered and aerated. A pump panel at the end of the planter moves the water to the toilet tank for flushing. The blackwater from the toilet goes outside to a septic tank, and possibly a blackwater planter which cleans the effluent before delivering it to a septic field.Produce their own heat and cooling, through using a combination of passive solar design, natural ventilation, a photovoltaic solar array, a wind turbine, and/or a gas generator.Produces food via a “food forest” and “salad bar” grown in the indoor greywater planters.An Earthship’s exterior walls are typically constructed of used tires filled with dirt to provide thermal mass “cooling and heating”. Interior walls are constructed of a honeycomb of empty aluminum drink cans or glass bottles set in concrete. Earthships are artistically beautiful and the houses appear to rise out of the earth as if by natural commandment. 
However, there is a disconnect between how the Earthships are intended to work and how they actually work. Around the world, groups and forums discuss the design’s many issues. In order to identify patterns within the issues, in early 2014, we started case studying Earthship builds around the world as well as here at home in New Mexico. We catalogued the issues and resolutions that expert builders and other researchers were finding. We studied the data collected from Earthship builds in 15 countries and visited 20 sites in the US… from the smallest tiny house Earthship to some of the largest and most palatial Earthships in the world. We read commentaries from builds, builders, and systems; digging ever deeper into the data - what research has been done? If not on this wall system, what do people know about the materials? What are the pros and cons? What is the embodied energy? We designed surveys and conducted interviews of owners, builders, and renters to find out what issues they were having and how they solved them. We started collecting weather data to see what tweaks make the homes work well in what climates. 
Then we branched out, finding scientific research and data to support both sides of every debate, conducting more interviews… we started collecting enough data to start to identify patterns in what techniques worked where and why. That the Earthships have some issues is an established fact. What was not fully established are the reasons or patterns that explained why. We analyzed the data and tried to figure out what it did, and maybe did not, say. Academic research is especially difficult to digest, so in as much as we were able, we translated that into plain English. We also found some places in the Earthship website and literature that were confusing, and we attempted to explain more of what was happening there. 
Our next goal was to document what design tweaks worked for people, and pair those tips and tricks with some solid design advice so that we could empower readers to design a space that meets their physical needs of food, shelter, and water; fiscal needs of value, budget, and schedule; and psycho-emotional needs of a space that supports you in becoming who you dream of being.
Then, we kept going, cultivating the list of “people to watch” in Earthships in particular and Natural Building in general. We checked out the websites, blogs, research, forums, and Facebook fan pages of the foremost experts in their fields. Some were professional designers and contractors and some were hobbyists who had learned by doing. We paid careful attention to their advice and problem solving tips, and then dug into the next level of data… the comments… sometimes hundreds, even thousands, from invested readers who were sharing their own stories of triumph over common issues raised. Too hot, too cold, just right - what they did and how they did it - we wrote it down.
Then, after reading Earthship Volumes 1-3, we realized that what people really needed was help a) deciding what systems worked for their climate and values, and b) learning how to utilize them. Finally, we consulted experts - architects, engineers, landscape architects, and researchers - to help us offer better clarifications and more useful design tools.
It is our goal to supplement the standard Earthship literature with helpful principles of design that can help elevate the Earthship ideal into its next generation, and hopefully help to make the process as painless as possible for would-be builders along the way.

Introduction

T his project started with one idea: Share the answers to the questions I got asked day after day about improving Earthships. What started out as 3 pages on the Archinia website a few years back has now grown into a coalition of designers, engineers, sustainability experts, and people in-the-know all sharing their knowledge so that we can try and help make the world a little bit better place. 
We love the organic forms of earthen architecture and the idea of living freely and in concert with nature – growing our food, reducing our need for systems, rising and setting with the sun – these are noble, sustainable, and mindful ways to live. 
Living in Taos, New Mexico at the epicenter of the Earthship phenomenon, we are impressed by these structures every time someone comes to visit, because they inevitably want to see them. We have many friends who have lived in them. We have visited them, interviewed their builders, and even gone to workshops about them. While we celebrate the Earthship’s successes… like the glass bottle walls that radiate a mosaic of blue, green, and amber light… we also see… and hear people’s frustrations over… their flaws. 
We are often asked whether the Earthships are as good as the hype around them suggests. When we started posting about common problems on our website, people took notice and started asking us not only to help solve the issues they were having with their existing Earthships, but also to help them hack the design to make a more natural version. As a designer, I was intrigued by this idea because I also wanted to see if the Earthship could be done with natural materials. So, I rallied my team and we started working. We found research, collected data, took tours and made observations, and… in order to build a new paradigm… we got back to basics.
This return to basics started for me when I moved to New Mexico seven years ago. Previous to my move, I lived in Vail, Colorado and worked as a project manager for an architect who designed $7million+ homes in the most prestigious areas of the Rocky Mountains. Working on projects of that scale and quality gave me one set of values around architecture: the bigger, the prettier, and the more expensive… the better. I was quite literally at the top of the residential architecture game. I got to work on some of the most magnificent residential spaces there are. 
Here in New Mexico though, I got back to my roots – in the earth – and I found my way back to great design for real people again. I realized that everyone deserves to live in a place that is safe, warm, requires little energy input, and is a space that can make their lives a little brighter. I also realized that the most efficient way we can change our world to a more sustainable one is to impact as many peoples’ homes as possible. Because for every new cruddy building that gets built, we all pay for the bad design by losing our incredible wealth of natural resources, which are mined, extracted, cut down, and otherwise abused in order to support these bad buildings.
I went back to what I consider the heart of great architecture. I re-read Christopher Alexander’s A Pattern Language, which investigates the forms of architecture and landscapes designed by people of different cultures in different places. I re-read Kenneth Frampton’s essays on Critical Regionalism, which discuss designing buildings that are of their place and time and culture. I re-read Sarah Susankah’s The Not So Big House so I could remember how to do small-scale design well again. I joined the Architecture 2030 movement and the SEED movement so I could commit to sustainability goals that support our earth and its people too. I learned how to make adobes, install and repair earth plaster, and build naturally. And I started a 5-year research project on sustainable and natural earth-centered design in New Mexico and around the world. 
Here in New Mexico, people have been living off the land and designing and building in concert with nature for more than 1,000 years. Many of our historic buildings work as well today as they did when they were built. I thought this might be true as I visited the many archaeological sites where our original architectures still exist intact. I confirmed it when Archinia was hired for two projects that allowed me to survey more than 500 historic buildings in Taos County – many of these adobe buildings were still in relatively good shape after 100 years! It became clear rather quickly that these natural buildings are a tangible offering that we can pass on to our kids. That is important because it is truly sustainable. 
The story of how all of it worked together became a part of me and informed how I relate to every space now. And who isn’t looking for a deeper, more meaning-full connection to their place in the world? This is why I want to share so much of what makes great vernacular architecture work with you – I want to help you find your special connection to your Place. Connecting to Place has become important again for many designers around the world. In fact, now there is an entire discipline in architecture called PlaceMaking. PlaceMaking is less about making things than it is about honoring the Places we build in. I think this idea can help us build better buildings in general. And better Earthships in particular.
Forty years have passed since the earliest Earthships were dreamed into existence. In that time, Mike Reynolds – the father of Earthships – and visionaries like him have played a fundamental role in expanding ideas about sustainable design and natural building. This has helped to create a new generation of would-be home builders that are better-versed in sustainable strategies. Those who can afford Earthships also have a more discerning eye, as the price point of the buildings has risen dramatically, and with that comes a more sophisticated consumer.
The new generation of Earthship enthusiasts: Does not want to cart questionable building materials long distances in the name of recycling and call it “green”.Wants to build locally and naturally… and they want to build it themselves. Wants their buildings to be cool in summer, warm in winter, the humidity to be predictable and regular; and they want to minimize pests and allergens in their environment. Wants to be able to get a permit, and insurance, and resell their homes if they want to; or pass them on to their children if they can.They might have been influenced by the tiny house movement, and they want a smaller home that is “just right”… for their budget, time, ability, energy use, and maintenance.Oftentimes, they want to be able to spend the rest of their lives in their home, which means they want to make their home easy to manage, maintain, and get around in, even if they are in a walker or wheelchair.They want their home to feel like it is made from and relating to the earth: in views, in light, in fresh air, in the ability to grow food, and in a beautiful landscape that supports the function of the home.Finding the balance between all these desires is a delicate and sometimes lengthy process of discernment, study, and goal-setting. That is what this book aims to help you do. 
Chapter 1 THE EARTHSHIP REALITY PROJECT addresses the Earthship ideal as it exists today, discussing the science behind the Earthships, as well as issues and resolutions of the design over the past 40 years. 
Chapter 2 THE SCIENCE: ACADEMIC RESEARCH AND TIRE OFF-GASSING reviews some of the best academic and scientific research on Earthship design and performance, and then offers interpretations of what must be addressed to remedy the issues raised.
Chapter 3 A WAY FORWARD begins to lay out a path for those who want to utilize earth-sheltering and Earthship ideals as a basis of design for a truly sustainable home. In this chapter, we discuss designing a sustainable home, obtaining financing and insurance, tax credits, cost effective sustainable features, minimizing waste, managing the complexities of the build, visioning, and Code requirements.
Chapter 4 THE BUILDING’S CONTEXT AND SITE addresses design techniques for the site and landscape, and discusses methods for how to put both to work for you. 
Chapter 5 DESIGNING FOR THERMAL COMFORT addresses natural, mechanical, and design options for improving thermal performance. Topics covered include passive solar design; using thermal mass versus insulation; using earth-coupling versus earth-sheltering; designing for thermal and moisture protection; and natural ventilation. We also touch on acoustics.
Chapters 6 through 8 are a three-part series on the basic building blocks of a building. 
Chapter 6 THE STRUCTURAL SYSTEM specifically addresses the ways we can form the building’s structure. 
Chapter 7 THE ENCLOSURE SYSTEM outlines methods for the construction of the building’s envelope or skin. We discuss traditional earthship building blocks like tire, glass, and can walls, as well as alternative systems like adobe, cob, rammed earth, earthbags, wood block concrete forms, timber frame, log, cordwood, and strawbale buildings. We also cover various roofing options as well as doors and windows in this chapter.
Chapter 8 ROOMS, SPACES, COLORS, & TEXTURES discusses the spaces within the building envelope and how we can decorate those spaces in order to create a home we love. 
Chapter 9 MECHANICAL SYSTEMS outlines basic mechanical, electrical, and plumbing considerations for various systems, including and especially on-grid systems since those are what make an Earthship most affordable.
Chapter 10 IMBUING SPACE WITH SPIRIT is affectionately titled “The WooWoo Chapter.” This chapter addresses the psychological and spiritual aspects of design and covers a wide range of topics including psychology of space and color, locating power spots, astrologically-correct timing for cutting wood and other building tasks, and we even talk about Feng Shui and Vaastu. While my intellectual approach to design has always been rooted in the science of building, my heart resides in another place – one that is inhabited with a little bit of magic. While there may be overtones throughout the text, this chapter makes no attempt to reign in magical thinking. I hope that for those of you who are called to create spaces that are spiritually “more”, these tips are of benefit.
Chapter 11 CONCLUSION: A NEW SET OF EARTH-SHELTER BUILDING CRITERIA presents my conclusions about the kind of earth-sheltered home I want, after having gone through the process of asking myself the same questions you will as you design your home using this book. I am not offering a general conclusion that will work for you, because that is not possible for me to do. We will get into the reasons why a conclusion that works for me cannot work for you in the sections where we discuss how there can be no Global Model of design. I do hope that seeing the results of my investigation assists you in determining what works for you. 
Chapter 12 OVERWHELMED? NEED HELP? discusses some helpful tips if you hire an architect or residential designer to help you design your space. 
The APPENDICES offer lists of resources and worksheets designed to help you manifest a space you will love. 
The opening photos of each chapter were selected with the intention of offering inspiration. For me, these photos represent the best of Earthships as well as earthen design… and abundance… which is what I wish for all of us. 
We will post a list of links for the sites we mention here on our blog and we will post new and revised content as it becomes available between editions. 
Finally, I want to offer that there were two other motivations for me writing this book. The first is that I have gone partially blind and there is a pretty good chance that I will end up totally blind eventually. I wanted to document all the tips and tricks I have learned in my career before I cannot see the words on the mountain of pages of sticky notes, notebooks, and files that I saved anymore. So I wrote down all I could remember and transcribed every tidbit of design advice that I could find in my files. Plus, I have this crazy idea that Architecture (the good stuff, with a capital-A) should not be reserved for the rich. Modern homes for regular people are rarely designed to last or work properly for their climate. This demands more resources and results in higher monthly fuel costs. These homes require still more resources when they must be repaired or rebuilt because they are poorly constructed… and on and on it goes. I want to help stop this crazy cycle that people, myself included, are getting trapped in. I want to help bring design back to the people. That is why, when my first editor told me on Christmas Eve that she couldn’t finish the book, and the second editor told me in late February she couldn’t finish it either… I kept writing. I care less about perfect wording and citations than I do about getting this information in your hands so you can make your spaces shine and start saving your money and resources NOW.  
The second motivation is that I want what I suspect all of our readers want – a place of my own that fills the void created by living in a world that is not in alignment with my values. I want my own perfect little oasis that is of-the-earth and that feeds my body and soul. I have a solid background in this, as I have worked for many years to help people design and build their own perfect spaces. But there were things I did not know myself about some of the kinds of building that I have not already worked with. What I didn’t know, I learned, and shared here… so you don’t have to spend countless hours researching it all yourself. 
This book is also a bit of an homage to the people and organizations who inspired and taught me through this process, and who joined in in this effort to help us identify truly sustainable ways of doing earth-sheltered buildings. There are so many extraordinary people doing amazing work out there. Their work can change the way we approach architecture and design! I want to celebrate that and help people to use design to improve their lives. So I will also share stories about the people who inspired me and include links to their work so you can get inspired too!
With all of my heart, I hope these pages help you manifest your dream home too.

"Where can I go to learn to build my new home? Is Earthship Academy the way?"

One of the amazing things about having written the book from the point of view of writing "for my peeps" is that, I somehow actually touch the hearts of some of my peeps with this work! I love getting notes from people after they have finessed their ideas! It's fun for me to take a break from my practice to help someone out or see what shifted for them!

A few days ago, I got one of the questions I get pretty regularly about the Academy-type programs, and I thought I might share my thoughts on it here, in case it could help more people.

Q: "Should I go to one of the Earthship Academy-type programs (now offered by several builders), go to the original EA, or choose another path to achieve my new ideal home? Is the Earthship a viable idea for the future? Where would I best spend my time and money?"

A: "While I have personally moved past the earthship idea, I encourage people who are passionate about it to go to the original Earthship Academy course. Michael's got a decent program for what he offers, and you can learn a lot about his particular brand of sustainability, and enjoy a unique view into Taos if you have the time and money and desire. The only "problem" with his course is that it really prepares you to only do things his way. But that's okay if you LOVE the ES idea! His team is the best in the world at what they do!

Now, that said... I had every intention on doing a second edition of the book, with WAY more information from builders around the world, and so far I am stuck -  it came down to my not really wanting to invest more time in the idea. I lost interest in the first book halfway through, if I am totally honest... the research made it clear that the idea isn't all it is cracked up to be - that's why it became a book about designing your own home rather than focusing on salvaging the earthship ideal. The part of me that wants people to have homes they love, that are affordable, and built to last generations... wants more. That's why I am moving, much as the original Earthship Europe crew has, towards a permaculture-based natural home integrated into it's unique landscape. They have partnered with Oliver Swann of NaturalHomes.org and created a new concept called Permahome. They also have listings of natural building workshops you can go to around the world!!
As far as the future of earthships go, I think it's like the (Bucky) Fuller dome... there will always be someone who wants to work with the idea.
If it was me, and I had enough money to do something big and brave and had the time and could go anywhere I wanted, I would spend it:Learning cob building with Architect/Builder Ianto Evans and Michael Smith! (OMG both building GENIUSES!) at Cob Cottage Company in Oregon: https://www.cobcottage.com/apprenticeand THEN I'd go workshop with Robert LaPorte and Paula-Baker LaPorte at EcoNest: https://www.econesthomes.com/natural-building-workshops/overview/econest-intensive/ Their workshops are amazing... they even include mindfulness training!
I just think cob building, combined with timberframing and light-clay-straw construction, will be the future for those of us who are more naturally-inclined but want something lower maintenance. I think you could learn everything you ever needed to know, and adapt to changing ideas... like hempcrete... really easily with those tools in your metaphorical tool-belt. Plus, they are INCREDIBLE people... the kind you end up friends with for the rest of your life... doing solid, well-built design that will last FOREVER and whose ideas empower people to do it many, many ways, with nearly any budget."
I hope that this is helpful! I'm cheering for you! <3