Pergola - can you believe what the building inspector told me
Sounds crazy to me, but from what others have posted I guess it isn't out of the question.
However, the price seems high. I hired a structural engineer to draw up plans for a room addition above a garage. The 2nd story front wall will be set back from the front of the garage, so in other words there is nothing below it and a large support beam was needed. This 20 foot beam supports the floor joists, upper wall, and on top of that wall are the roof trusses. Not rocket science, but probably not your every day engineering project either.
About a dozen contractors and other engineers recommended this person and he has a stellar reputation in the area. When the people at the building dept saw his name they said, "If he did it then it looks fine to me." His plans included specific model numbers for hangers, connections, and load specs for the trusses with consideration for snow, wind, etc. Also has several detail subsets of the major connections.