Did this in school last semester. Please forgive the colours, the program didn't have any cool textures. I did it in AutoDesk AutoCAD, I think it was 2002 or something. It isn't finished or fantastic by any means, but I did spend a lot of time on it. By the time I was finished I sat down with the teacher and taught him how to do it.
Here is a link to more pics
http://s360.photobucket.com/albums/o...ro/3D%20House/