It is best to opt for a draft lease agreement drafted by a legal expert, in order to avoid that important sections are neglected and the wrong legal and technical language is used. Rental agreements are usually simple documents, so as a rule none should be verified by a lawyer. A sublease agreement is a contract used by a tenant to lease to a third party some or all of the premises of a property that the tenant rents to a third party for a fixed period within the limits of the lease between the tenant and the lessor. In this case, the tenant becomes a sub-country, as he becomes both owner and tenant. As the main lease agreement between the owner and the tenant, the provisions relating to a sublease agreement are also subordinated to the main lease agreement.