N.Y. Real Prop. Law § 228
A tenancy at will or by sufferance, however created, may be terminated by a written notice of not less than thirty days given in behalf of the landlord, to the tenant, requiring him to remove from the premises; which notice must be served, either by delivering to the tenant or to a person of suitable age and discretion, residing upon the premises, or if neither the tenant nor such a person can be found, by affixing it upon a conspicuous part of the premises, where it may be conveniently read. At the expiration of thirty days after the service of such notice, the landlord may re-enter, maintain an action to recover possession, or proceed, in the manner prescribed by law, to remove the tenant, without further or other notice to quit.
N.Y. Real Prop. Law § 228