Mmmmmmm...the smell of gingerbread just tingles my toes! Here are some links to some gingerbread crafts and projects on the web. The projects are not all "houses". There is a lot to see. Some have photos and instructions. Enjoy.
I made the house below out of a Sizzix Die- Cut (Box #2) and various paper punches. I added a matching lid/flap so both sides would be the same and I could bring them up into a gable top. Sorry the photos are not clearer.
I made the house below out of just cardstock mainly. I used a heavy card stock and basically made a square for the house and put a roof on it, then decorated. Sorry I don't have a step-by-step for you but it just goes to show you can do anything with a little paper and cardstock:)