I'm from Iowa, so I cannot help you. But I would suggest that you Google Landlord/Tenant laws, and the Eviction laws for NY. If that doesn't help much, contact a local attorney who does evictions on a regular basis. Nowadays, you could get all the way into court, and if you messed up just a teeny tiny bit, your case could be thrown out, and you would have to start over again. So you want to do it right the first time.