My thought in reading this is that it may not be possible to ascertain if the cabin on the suspect's property is the stolen cabin until they examine the building and look around inside. That's where the warrant is going to be required. You do not need a warrant to be anywhere a person can legally be, but as soon as the LEO needs to step onto the property beyond the curtilage, better have a warrant.
Ben, on the car issue, you have different rules for motor vehicles. Since they are mobile, the warrant requirement does not always apply. You still need probable cause, but since the car could be taken, the law does not require the warrant before the search. This is not a hard and fast rule, and when i prosecuted, I encouraged officers to secure the vehicle and get the warrant first. Made the cases better.