Massachusetts Offer to Purchase Real Estate Form ✓ easily fill out and sign forms with PDFLiner ✓ download blank or editable online. PAR's Buyer Agency Contract includes all of the legallyrequired language and allows for a buyer's broker fee to be structured in several ways.The MAR form is more buyerfriendly while at the same time gives Realtors way more legal protection than the GBREB form. Water supply; Sewer system; Utility costs. The disclosure must be filled out and offered to buyers before they can put in an offer. If the potential buyer likes the home, an offer in the form of a purchase agreement is written. If accepted, the seller shall sign the offer creating a binding purchase agreement that will start the process of transferring the property. There are two main offer forms used in Massachusetts.