Monthly Lease Inside New York City: 30 days of notice. A tenant must inform the landlord of the name of any occupant within.After 30 days, claim they are a tenant with or without a lease. That idea is left over from colonial days and some on the extreme of the progressive left. Give the tenant at least 30 days notice to leave. The last day in the notice must be the last day of a rental period. Monthly Leases 30 days of notice. Yearly Leases - Three months of notice. If you are a tenant or landlord and you have an ongoing dispute, including eviction, you can get information and assistance from Housing Court. Leasetoown: Allows tenants the option to purchase the property at the end of the lease term.