MAR keeps you informed on legislative issues and acts on your behalf and for the benefit of the MA real estate industry and private property rights. Use this form to change or amend terms of the Purchase and Sale agreement after it has been signed.How to write an offer on a home in Massachusetts. For this sample offer we are using the Greater Boston Real Estate Board forms. Find forms you may need as a real estate professional in Massachusetts. There are two main offer forms used in Massachusetts. New York State law requires real estate licensees who are acting as agents of buyers or sellers of property to advise. A little tutorial on how to put an offer. Terreno Realty has acquired a 33000squarefoot industrial building at 4915 Maspeth Avenue from transport company XPO. At Greystar, we offer apartments in desirable locations near shopping, dining, and workplaces.