When price is an issue, you could think of paperwork terrain, graffam models f.e. and there is some free stuff on the net. It's cheap, not really a lot of work and looks really nice. And if really in a pinch storagewise, you can throw or give it away (and keep the documents on your computer to remake them later).
Concerning the space issue: you could look at fold-up systems, such as: http://wars175x.narod.ru/wargameprint/build/scifi01.html (this is both fold up and homeprint). Some other systems have, f.e. a system wherein the buildings fit into each other, like a russian matrushka, limiting storage space. If not homeprint it is cardboard and not very expensive.
The dropzone commander terrain is a very good example of this. Works great for 10mm or 6mm, and if you buy the boxed set (I think you can print your own for free too) it comes out to less than $2 a building and you get enough road/base tiles to cover a 4x6 table. A playable table set for less tan $40 aint bad by any stretch.