I would like to put a small (<200 sq ft) prefab carport near my house in a rural county in Colorado. The county uses IBC 2015. My understanding is any accessory structure less than 200 ft.² in residential doesn’t require a building permit. I called the local inspector, who says a building permit is required, because the car has fuel in it and the car will be parked in the carport. Does anybody know if this is true? I can’t find any reference to that in my search through the IBC. I did find reference to fuel dispensing and car maintenance in Section 460, but neither of those are in play here.