Massachusetts General Laws Part III. Courts, Judicial Officers and Proceedings in Civil Cases (Ch. 211-262) Ch. 218, § 54

In addition to the jurisdiction otherwise conferred and except as otherwise provided by this chapter, the central division of the Boston municipal court department shall have jurisdiction of civil actions in which money damages are sought pursuant to sections 19 and 21 and of actions brought under chapter two hundred and forty-seven if one or more of the defendants lives or has his usual place of business in Suffolk County, excluding Chelsea and Revere, or, if in connection with the commencement of such an action the approval of trustee process is sought, one of the alleged trustees lives or has a usual place of business in Suffolk County, excluding Chelsea and Revere, or, in actions brought under chapter two hundred and twenty-seven, if an attachment of property or personal service of the complaint is made in said county.