The California sublease agreement will allow a tenant (sublessor) of a property to introduce a subtenant, called a "sublessee." Subletting your office space or commercial property?Easily customize your own Commercial Sublease Agreement. A Commercial Sublease Agreement confirms the terms of a guarantee for a renting tenant to grant use of designated commercial space to another leasing subtenant. Effortlessly sublease your commercial property with our customizable agreement template. Ensure clear terms and lease with confidence. How to Write a California Sublease Agreement? A California sublease agreement is a written arrangement that involves a residential tenant leasing their rental property to a subtenant. California Sublease Agreement is a document between a tenant and a subtenant whom agrees to rent the same property. A tenant can legally sublet the rental property if stated or not mentioned in the lease.