>>6021480Ohhh, 5" HALO figures. In that scale, it's difficult to find buildings. 1:12 buildings (standard dollhouse scale) would look too large- the 1 inch means a lot in small scales. 3/4 scale probably would work but those are hard to find.
You could scratch-build using MDF. You don't really need to build a true 3 dimensional building. For a diorama, maybe a few storefronts packed together, only 1" in depth (just enough to show something behind the windows). Like this: