An Assignment and Assumption of and Amendment to Lease Agreement is a legal document that outlines the transfer of a lease from one tenant to another tenant. The agreement outlines the terms of the new tenant's lease, including the duration of the lease, the amount of rent the new tenant must pay, and any changes to the original lease agreement. The agreement also assigns the obligations of the tenant to the new tenant and releases the original tenant from those obligations. There are three types of Assignment and Assumption of and Amendment to Lease Agreement: Assignment and Assumption of Lease, Assignment and Assumption of Sublease, and Assignment and Amendment to Lease Agreement. An Assignment and Assumption of Lease transfers the tenant's rights and responsibilities under the lease from the old tenant to the new tenant. An Assignment and Assumption of Sublease transfers the sublease from the old tenant to the new tenant. An Assignment and Amendment to Lease Agreement amends the original lease agreement by adding or changing terms, such as the amount of rent or the length of the lease.