This is the "room" I refer to (though this isn't the home we're looking at):
Homefinder - The Villages(R) Homes and Villas for Sale - opposite that window is a door that leads out to the car port. There are two steps in the carport to the actual manufactured house, but the room itself is not insulated, is not a finished room, has no ductwork leading to the main house, and has no way of getting into it, beyond that door leading directly to the carport.