Here's a list of the typical documents you'll need: Purchase Agreement or Sales Contract: This primary document outlines the terms and conditions of the offer. It sounds as if they communicated verbally that they liked your offer and would accept it if you made a couple of changes.This does not constitute acceptance. Solution: Use a proven Buyer Presentation! You'd never expect a seller to sign a Listing Agreement without a presentation, would you? As a CT Realtor, do you know what goes in an offer packet? Com o: 212-381-4246 SoHo 451 West Broadway New York, NY 10012 A real estate offer letter is a unique document for three audiences: a seller, a buyer, and a real estate broker. Immediate Kick-Out Clause (clause to use when Seller reserves the right to accept another offer because of a contingency):.