Notice to vacate for tenants with no lease- Manchester,NH

[Eric Monkewicz]

Hello,

I recently bought my first multifamily property and have made my first mistake already. I inherited tenants that I was planing on keeping because they seemed like good people. After giving them a lease to sign we agreed on, I was given the run around for a month. After unanswered texts and un-kept promises to get the signed lease to me-I put my foot down and gave them a deadline when I wanted it only to find out that they were buying a house and moving out the next month. They are currently in no lease and have no written obligations to me. I posted an add on craigslist and already have a lot of interest in the apartment. It doesn't look like I'm going to have any problems renting the unit out at the end of next month. I want to make sure I am covered in case the current tenants house falls through and they try staying. Is a 30 day notice to vacate the premise all that I need to serve them to cover myself? I was planning on sending them the notice electronically, in person and through certified mail. Am I missing anything and could anyone possibly point me in the direction of a good template to use? (I've come across several different versions online)

ps- my property is in Manchester, NH

Thanks,

Eric