Since 1990 Commonwealth Plumbing has been serving the greater Boston area providing union plumbing services. We are members of Local 12 Plumbers & Gas Fitters. Founder Tom Hannon has always strived to maintain the company motto of “client satisfaction always comes first.” Tom founded Commonwealth Plumbing Corp. and was subsequently joined by his brother Peter and then by sons Tom Jr and Matt. We are truly a family business that has grown to become one of the leaders in the industry. Our reputation for being a no nonsense, reliable and professional company has taken us from a small shop 30 years ago to an 80 person power house looking to continually grow the greater Boston area.