Mass. Gen. Laws ch. 121B § 32B
As used in sections thirty-two B to thirty-two F, inclusive, the following words shall have the following meanings unless the content otherwise requires:
"Landlord", the owner or managing agent of a public housing development or a subsidized housing development.
"Public housing development", such developments for housing owned and operated by a housing authority pursuant to this chapter.
"Subsidized housing development", such multi-family developments for housing as: (a) receive the benefit of subsidy in the form of project-based assistance under the section 8 housing assistance program for the disposition of projects owned by the United States Department of Housing and Urban Development; or (b) are owned or held by the United States Department of Housing and Urban Development as mortgagee-in-possession.
"Tenant household", an individual, family unit, or other group living in a public housing development or a subsidized housing development, as reported to the landlord of the development at initial occupancy or thereafter.
Mass. Gen. Laws ch. 121B, § 32B