Subleasing can help to reduce living costs, replace roommates, and can help landlords keep units occupied when tenants may be away for extended periods of time. A sublease agreement is considered a written document that offers the lessee a chance to pass on the responsibility and rights of tenancy to another person.You don't have to write up a sublease contract. Your original lease agreement should explicitly state whether or not you allow subleasing, and if you do, what the terms are. Subletting is when thirdparty rents or "subleases" the property from the original tenant. 1. The sublessee shall be liable for the full rent of the sublessor in the amount of. I am the only official tenant of an apartment. How can I have a legally-binding sublet agreement with a new, unofficial roommate? Responsibilities: The sublessee is responsible for paying rent to the original tenant (sublessor) as stipulated in the sublease agreement. HCHA's rental listing service helps owners find tenants and fill their vacancies.