This form is used to make a written offer to purchase real estate. This guide will walk you through the paperwork for selling a house without a Realtor and various other steps that can give you a leg up.The paperwork for selling a house without a realtor in Massachusetts includes 14 required or recommended documents. Utilize a Letter of Intent (LOI) to initiate negotiations for a sale, summarizing the terms of a forthcoming contract agreement. Selling your house in Massachusetts? Our in-depth guide breaks down the process into 8 easy-to-understand steps, from listing through closing. Do you know how to write an offer letter for a house? We're here to teach you the ins and outs to improve your chance of closing a deal. Send a For Sale By Owner prospecting letter to neighbors in 3 simple steps. Learn how to generate leads for your FSBO campaign.