Some months back, the Fire Analysis and Research Division was asked to run some numbers on fires in residential properties under construction or undergoing major renovation. This resulted in a new NFPA report, Fires in Residential Properties under Construction or Undergoing Major Renovation. The results were largely straightforward. We found that fires in residential properties undergoing construction or major renovation, while a minor portion of all residential property fires, nevertheless accounted for an estimated 5,120 fires per year from 2007 to 2011. We also found that most of these fires and associated losses took place in one- or two-family homes....