A California sublease agreement is a document between a current tenant (sublessor) and a subtenant for residential use. A California sublease agreement is a written arrangement that involves a residential tenant leasing their rental property to a subtenant.This Sublease Agreement is made between. , individually or collectively as the "Sublandord," and. Sublet your property in California with confidence using our customizable agreement template. Ensure legal compliance. Create your California sublease agreement here. Rent your unit to a subtenant and download our free template. Agreement is Complete and Binding. All preliminary negotiations between the Parties are merged into, and superseded by, the terms of the Lease.