robh, I found the Plast Craft building relatively easy to work with. The kits are primarily the plastic sheets with space cut in to add the window and door pieces that are made of resin. There is some details, like stone work cut into the plastic but I did used textured paint (craft paint with sand mixed in) to give the walls a rougher surface. There are no internal floors but I made some out of cardboard; because of that, I didn't glue the roofs on. I think they would be fairly easy to modified. I used regular Crazy Glue to put them together and they seem to hold up well.