Because people were always disassembling his ramshackle fortress in order to make their own smaller dwellings from the parts, Hodgman always kept an extra set of blueprints handy in case he needed to build another one.
You carefully consult the blueprints, gather a bunch of scrap lumber and old scrap metal, and go to town. To buy some nails. Which you use to assemble the stuff you just gathered into a fortress.