Modular House work

So after working on Characters for a few months, I revived my enthusiasm for Environments and Architecture again. This time I am developing ways to create modular building sets that can be put together using a relatively small amount of different pieces to create a large amount of diverse buildings.

I am trying to divide the main parts of the building into category sets, and create simple, tiling texture sets to get the most bang for my byte. The basic part will have different versions. For instance, One of the categories will be windows. Right now i have 4 different sizes of window that could each be made in a different style - sliding, double-hung, bay....as long as they fit the hole in the building, they will work. I can use one basic house frame and 4 different window styles, and viola! 4 different houses! That's not even taking into account color, or choice of siding, other bits and accoutrement's...

Here is a WIP of the first set as seen in cryEngine2: