A land purchase agreement is a form used for making an initial offer on a vacant piece of land and for outlining the terms of the purchase. Please see the links below for the appropriate form or application, and directions to complete the associated document.This is an example of a purchase and sale agreement for agricultural land. Streamline your real estate transactions in Texas with our customizable purchase agreement. Ensure legal compliance and purchase or sell properties. Deeds, plats, liens, powers of attorney, oil and gas leases, and many other documents.