This agreement is contingent upon Purchaser obtaining approval of a. Conventional,. A purchase and sale agreement is a contract between a buyer and seller for transacting a property in exchange for a specific price.BUYER agrees to purchase and SELLER agrees to sell the real property, and the improvements thereon, commonly known as: , in the County of. THIS FORM MAY BE USED ONLY IN THE SALE OF A ONE TO FOUR-FAMILY RESIDENTIAL PROPERTY. OR VACANT ONE-FAMILY LOTS. This FSBO paperwork is needed as soon as you accept an offer, so it's useful to have a purchase agreement onhand that you can fill out quickly. Curious about the paperwork for selling a house without a Realtor? We'll make our choices, check the boxes and fill in the blanks. Find and download various legal forms, brochures, and self-help kits. If a form does not open, right-click the link to save it to your computer.