MA FSBO Real Estate Forms. Get to know the various forms and pieces of paperwork that you will need to use during your FSBO transaction.A Massachusetts purchase agreement is the standard legal form for selling or purchasing a home. It documents the transaction's stipulations. Learn how to sell your home FSBO in Massachusetts. Selling a house without a real estate agent in Massachusetts demands thorough preparation, market knowledge, and negotiation skills. A For Sale By Owner contract Massachusetts must include: 1. The Purchase Price, 2. Massachusetts requires those selling FSBO to fill out and file many documents and forms. Several of these documents are legally binding agreements.