2 car garage 1 garage door

[Clint Bradley]

Hey everyone I'm looking for a little advice.  I just got my first offer accepted on my first duplex.  My question is. It has a 2 car garage but only 1 garage door.  Is there a way to rent out each garage spot separately without having to partition off the garage and install 2 new individual garage doors with openers? My concern is someone forgets to close the big garage door and something gets stolen.  And then it becomes finger pointing about who left it open and who is responsible for the stolen items. Any advice would be much appreciated.