I am going to build a garage on the side of a hill. I plan to dig out and have a shop on the lower level and build a 2 to 3 car garage on top. I have to comply with the building codes which include the fact that the home I am building by is a historical home. It was built in 1832. I think It is called Federal style. It has an (A pitch) line roof. I am open to any suggestions, places to look online or plans.