Mass. Gen. Laws ch. 209A, § 2

Proceedings under this chapter shall be filed, heard and determined in the superior court department or the Boston municipal court department or respective divisions of the probate and family or district court departments having venue over the plaintiff's residence. If the plaintiff has left a residence or household to avoid abuse, such plaintiff shall have the option of commencing an action in the court having venue over such prior residence or household, or in the court having venue over the present residence or household.