First, typically your landlord must give consent to either an assignment of the lease or a sublease. Generally speaking, there are two aspects here.Check out our list of available San Diego office subleases or create a sublease listing to advertise your commercial office space. Find Your Next Sublease. View currently available sublease space in the San Diego market. In submitting this Questionnaire, the proposed (Sub) Lessee completing the Questionnaire authorizes the. A commercial sublease agreement is a statutory document authorizing a third party to occupy a leased property under the original lease agreement. A commercial sublease is an agreement to lease space from a tenant rather than directly from a property owner. 1. Click the "Apply Online Now" button above complete the Rental Application. Follow the instructions below and on the application. 2.