We have to get sheathing inspections. It's kind of a pain in the ass because you either can't start your exterior finishes until you call in your rough inspections, or you call a sheathing inspection in alone (some places won't let you call it in separate). So in theory it could slow down the building process by a month or more. I like to dry a house in, put fascia, roof. Start rough ins and exterior siding at the same time. Wouldn't be able to do that possibly.