If Subtenant shall take occupancy of the Sublease Premises for the conduct of Subtenant's business, Sublandlord's Work shall be deemed substantially completed. Create your free New York sublease agreement and legally sublet your property.Download our template as a PDF or Word file here. To properly sublet your office space, you need to have a detailed understanding of how the process works. Subletting your office space or commercial property? Easily customize your own Commercial Sublease Agreement. In New York, tenants who wish to sublet their commercial lease must obtain written consent from their landlord. A commercial sublease is the act of a tenant re-renting space they currently lease to a subtenant. The tenant is required to obtain the consent of the landlord. This Sublease and any attached documents constitute the Agreement between the Sublessor and Sublessee regarding the Property and the building facilities.