I assume by "unregulated" you mean not subject to NYC's rent stabilization laws.
I do not believe that 232-A applies to leases.
A lease is a lease. It has a starting date and an ending date. If there is no provision in the lease for notice of renewal or non-renewal then there is no obligation for such notice and your tenancy ends without notice on the last day of the lease period.
Take a look at:
Section 232-C Holding over by a tenant after expiration of a term longer than one month; effect of acceptance of rent.
Where a tenant whose term is longer than one month holds over after the expiration of such term, such holding over shall not give to the landlord the option to hold the tenant for a new term solely by virtue of the tenant's holding over. In the case of such a holding over by the tenant, the landlord may proceed, in any manner permitted by law, to remove the tenant, or, if the landlord shall accept rent for any period subsequent to the expiration of such term, then, unless an agreement either express or implied is made providing otherwise, the tenancy created by the acceptance of such rent shall be a tenancy from month to month commencing on the first day after the expiration of such term.
If you are still in the rental one day after the last day of your lease, the LL can decline your rent and evict you through proper process, accept your rent and allow month-to-month, or require a new lease at whatever rent he decides to charge.
If you are coming up toward the end of your lease I suggest you call up the landlord and ask him if he wants to renew or not. Hard to believe you haven't done that already.