6 month lease is up - then monthly

[Randy Long]

Hi all,

First time landlord here. I have a roommate who signed a 6 month lease in July. He wanted to go month to month after the lease ends on Dec. 31. I have a tenant already lined up (my separated wife is moving back in in December/January). I want to give him enough time to look for a place so I want to break the news as soon as possible. Are there protocols for this? Legal notice I have to give him?

Thanks for any help.