Williamstown Real Estate Info1 homes for sale in Williamstown, MA. Find Williamstown real estate agents, and Williamstown house values. Get access to Williamstown listings, top Williamstown REALTORS, new homes and foreclosures. Our free real estate services feature all Williamstown and nearby towns. We also have information on mortgages, insurance, movers and other services for anyone looking to buy or sell a home in Williamstown.