The Standard Agreement for the Sale of Real Estate, also known as the purchase and sale agreement or just the contract, is a boilerplate contract. Use this free customizable owner financing contract template to confirm financing between the owner selling a home and a buyer purchasing it.To avoid a worstcase scenario, follow these pointers on drafting a contract that guards your interests as the seller and financier. A sales agreement is a contract between a buyer and a seller that outlines the terms, conditions, and specifics of a transaction for selling goods or services. 1. Sale and Purchase. While the state does not require you to have a real estate attorney, it's smart to hire one for a forsalebyowner transaction anyway. Seller financing is available for this property! Learn about forming and registering your business online, and how to complete other types of business filings.