Leases is an extensive subject that covers a variety of topics, including vacancy leases, renewal leases, security deposits, roommates, subletting, and more. Sublet a room or add a roommate.Additional Charges: (OPTIONAL). A sublease agreement is a rental contract used for rerenting a currently leased unit to a new tenant. Here is a sample sublease agreement you can fill out or use as a template. The amount accepted will be credited toward money due from Tenant, as Landlord shall determine. The assignee or subtenant does not become. By signing the sublease agreement, this does not remove the original person from the signed lease. No paperwork or sublease fee will be accepted in the oflice. A sublet, or sublease agreement, adds someone new to an existing lease.