Childrens book about a cubby/castle made of garbage. - SOLVED [s]

[Jack Kirby and the X-man]

When I was in Kindergarden or Grade 1 (~1985/6) in Australia the teacher read this book out aloud to us.

It was about a group of children who got together and built a huge cubby house out of garbage. I recall the cubby got pretty elaborate, taking design cues from castles.

Not much to go on I know - but hopefully someone will remember it as fondly as I do (and remember the critical element of its name!)

[Jack Kirby and the X-man]

Ahh.. I found it because it was a finalist for the 1984 Book of the Year of Children's Book Council of Australia. It is Junk Castle by
Robin Klein.