I made a haunted house version of my house last year- http://www.cakecentral.com/cake-photo_1152553.html http://www.cakecentral.com/cake-photo_1151886.html - I used sugar cookies since gingerbread didn't seem haunty enough. I had super fun, learned lots and it was REALLY tastey.
TO MAKE A TEMPLATE: One of the few good things about living in this area is that our county/township assessors have a website so people can check the assessments of their homes- they also have sketches of the houses- with dimensions. I used that as a footprint to start with- I'm pretty sure I used a 1 foot=1 inch scale, maybe 4 feet= 1 inch, ok so I just used what would fit well on the cake board I wanted to use. So then I went to MSWord, and made a sketch (inserted a square and told it how big I wanted it to be...) There was a bit of math involved when it came to the rooves- but not too bad (just ask your standard 12 year old- they're all good at that stuff!) After I got it all drawn out, I cut out cardboard *use the corrogated stuff- it's about as thick as gingerbread and will help you when you realize your pattern isn't quite going to fit together the way you drew it. My first time, I used poster board and it was beautiful- until I baked the gingerbread and realized that things didn't fit as neatly as the card stock did!!! So you make the notes on the pattern pieces, then use those to cut out your gingerbread (reading the notes as you go) Also, don't forget to write yourself notes about simple things- it's amazing how easily you forget to cut out windows, flip roof pieces, etc!
Any questions on templates, PLEASE ask, I love the fact that I know how to do this stuff and might be able to help!!!
***edited to fix the links***