Are you wondering what to write in your offer letters to landowners? Send a For Sale By Owner prospecting letter to neighbors in 3 simple steps.Learn how to generate leads for your FSBO campaign. Haven't had much luck with something solid through Google. An agreement to sell real estate, or a purchase agreement, is a legally enforceable document that specifies the terms of a real estate transaction. Discover why successful commercial real estate investors use a letter of intent when first making an offer on commercial real estate and how you can too! This letter of intent outlines the interest of a landowner ("Grantor") in negotiating the potential sale of property or property rights to an applicant. Here's a sample form, but these documents can vary depending on the type of property and where you live. Understanding what you're filling out and signing is essential because buying a home may be one of the largest purchases you'll likely make. But there's another piece of correspondence sometimes involved in a real estate transaction: a letter from sellers to buyers.