Assignment of Real Estate Sales Contract by Seller is a legal document that transfers the rights associated with a real estate sales contract from the original seller to a third party. This allows the third party to take over all the seller's obligations and rights under the contract, including the right to receive any payments associated with the sale. There are two main types of Assignment of Real Estate Sales Contract by Seller: voluntary and involuntary. A voluntary assignment occurs when the seller voluntarily transfers the contract to a third party, while an involuntary assignment occurs when the transfer is made as a result of a court order. The assignment must be in writing and must be signed by both parties. In addition, the assignment must be properly recorded in the county where the real estate is located in order to be valid.