Im curious, where did you get all the training data? Actual blueprints? Or it the training data pictures of homes? Or a mix?
I noticed it can only draw hip roofs.
You need more alot more training data of good looking houses. I'm sure it's taken a lot of effort to get these things working, but these houses are lacking some character to me.
I think this is a great idea. Have you thought about trying to hire architects or builders?