Tenants in New York have the legal right to sublet under certain conditions. They must typically obtain the landlord's explicit written consent.If you would like to sublease your apartment, you must first tell your landlord that you want to do this. Tenants are entitled to select a one or two year lease term. A completed lease rider or addenda must be attached to the vacancy lease and future renewal leases. Create your free New York sublease agreement and legally sublet your property. Download our template as a PDF or Word file here. The procedure for subleasing is quite complicated. This agreement outlines key terms such as rent, duration, security deposit and responsibilities of both the sublessor and subtenant. FORM OF SUBLEASE (1999, revised 2011):.