A sublease, or sublet, occurs when a tenant assigns part or all of their lease to a new tenant. In general, most commercial leases permit subletting.A commercial sublease is a scenario where the original lessee or tenant, now the sublessor, rents out their leased space to a third party. A commercial sublease agreement template is a fundamental and customizable contract between a lessor and the subtenant. Subleasing is the practice where an existing tenant rents out part or all of their leased commercial space to a third party known as the subtenant. You don't have to write up a sublease contract. Our free sublease agreement template makes it easier to sublet your room or apartment. Edit and store it on Contractbook to keep track of dates and obligations. When a tenant takes the lease of commercial property, they may have a right to create another lease below theirs. This is known as subletting or underletting.