Whether a buyer can assign a purchase agreement depends on the specific terms and conditions outlined in the original contract and applicable state laws. The contract between a tenant and landlord, whether based on a written lease or a handshake, is one of the most common and important deals.An assignment and assumption of lease is a legal real estate document that allows one party to transfer rights and obligations of a lease to another party. An AC is part of a contract governing the sale of a property and other transactions. An assignment and assumption of lease is a legal real estate document that allows one party to transfer rights and obligations of a lease to another party. Assignment and Assumption of Leases (Commercial Real Estate Purchase and Sale) (FL). Securing global software IP rights is vital. A ______ ("Grantee"), the real property located in the City of Anaheim, County of Orange,.