Subletting your office space or commercial property? Easily customize your own Commercial Sublease Agreement.The procedure for subleasing is quite complicated. What is a Commercial Sublease Agreement? C. Pursuant to the terms of the Lease, Tenant must obtain the prior written consent of Landlord to any sublease of all or any portion of the Premises. How to fill out the Commercial Sublease Agreement Form Instructions? 1. Identify and enter the details of the Landlord, Tenant, and Subtenant. 2. What is included in a standard Commercial Sublease Agreement? 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.