Iowa State Court System

Roommate wants to break the lease but he never signed the lease?

1. He is giving us 1 week notice that he is moving out.
2. He never signed the lease. I gave it to him to send to the landlord but he never did it (I didn’t know).
3. He’s a bad roommate. He smokes pot (my other roommate is in the military so if it’s in his system it can be detected), he is constantly late paying bills (3 months late at times) and he is intolerably passive-aggressive.
4. Other facts: Lease ends in 7 months. State of Iowa. Everyone paid $500 deposit. I paid the deposit for everyone when we signed the lease, and the roommates gave me their portion.

My questions:
– Are we (the remaining roommate and I) obligated to give him the deposit back?
– If we refuse to give him the deposit back, do we have a good defense if he takes this to court?
– Is there anything we should do as a precaution aside from changing the locks?

Helpful comments and advice is really appreciated. I’ve never had to deal with this king of situation before.

Here in florida no his breaking the lease and his not in title to receive his deposit back. I would read through the contract if i was you and read the deposit part. Also google the laws in your state. A verbal agreement is as good as written agreement like i said i live in florida and that’s how it goes.

Tke picture of the room where he stay’s in before and after. Also if there’s any bills that he has not paid make sure to have them in file.