Subletting your office space or commercial property? Easily customize your own Commercial Sublease Agreement.A California lease agreement allows a landlord of residential or commercial property to write a legally binding rental contract with a tenant. The California sublease agreement will allow a tenant (sublessor) of a property to introduce a subtenant, called a "sublessee." How to fill out the Commercial Sublease Agreement Form Instructions? 1. Identify and enter the details of the Landlord, Tenant, and Subtenant. 2. Our easy to use tool can help you create a commercial sublease in less than 2 minutes. California rental agreements are written between a landlord and tenant seeking to lease residential or commercial property. California laws presume that any conditions that were left out of the lease agreement were not meant to apply. The tenant may choose to rent out the entire property or a portion of the living space to the subtenant.