A Georgia purchase agreement is the goto document for buying or selling a residential property. This file contains detailed instructions for completing the NWMLS Form No. 21, a Residential Real Estate Purchase and Sale Agreement.A For Sale By Owner contract Georgia must include: 1. The Purchase Price, 2. A purchase and sale agreement is a contract between a buyer and seller for transacting a property in exchange for a specific price. Save time and create a legally binding Georgia Real Estate Purchase Agreement with PandaDoc. Customize, optimize, and streamline the contract process.