-Keller WIlliams is the largest real estate company in the United States. WIth 80,000 agents and growing. - Keller Williams - Foxboro / North Attleboro provides you the advantage of working with a local, individualized, caring office - yet we have the logistical and technological support of the nations #1 real estate organization. 2013 marks the 3rd year out of the last four that Keller WIlliams has won the JD Power award for highest overall satisfaction for home buyers.