Tenant is moving out

[Jimmy S.]

HI everyone. Need some advice here.

Tenant is been there 3 years and was always on time. The lease states It is a 1year lease and will automatically renew if 30 days written notice is not giving at the end of the lease ( Only told them this when we signed the lease and went over everything before signing) I got a text from them few weeks ago, 6 months into the new lease and they said they bought a house and will be moving in a few weeks. I told them I would let them use their last month rent for December. I still have their security deposit. I did a showing a few days ago and the place looks ok. They messed the railing up on the wall and also seen scratch marks on the one cabinet so they must have had a pet. Lease clearly states no pets. Also they cancelled the utilities on 12/10 so I will be stuck with them now. Also they said a scrap person took the lawn mower by mistake I have provided them so Im out a lawn mower to

What should I do? Its going to be vacant till i can find someone but they will be upset if I keep the security deposit also but they did brake the lease several ways.

Thanks