Weymouth, MA Short-Term Rentals: Occupancy Limits (2026)

Weymouth has not enacted a local short-term rental bylaw within Chapter 120 of the Town Code (Zoning), and there is no separate Weymouth STR registration program above the state framework. Three layers of state regulation therefore control the maximum number of guests in a Weymouth STR. First, MGL c.64G (as amended by Chapter 337 of the Acts of 2018) and MGL c.62C, §67 require every operator of a property rented for 31 days or fewer to obtain a Certificate of Registration through the Massachusetts Department of Revenue STR Registry; the application requires the operator to declare the unit's bedroom count and the maximum number of overnight guests, which becomes the enforceable occupancy limit for that listing. Second, 105 CMR 410 (State Sanitary Code, Chapter II - Minimum Standards of Fitness for Human Habitation) requires every habitable room used for sleeping to provide at least 70 square feet of floor area for the first occupant and 50 additional square feet for each additional occupant. Third, 780 CMR (the Massachusetts State Building Code, currently the Tenth Edition based on the 2021 IBC/IRC) defines bedrooms by minimum dimensions and emergency-egress window requirements. Weymouth applies the underlying Chapter 120 zoning use table to determine where a single-family or two-family dwelling may be used for transient rental, and the Town's Department of Municipal Licenses and Inspections enforces zoning compliance. If four or more unrelated lodgers occupy the unit, MGL c.140 §§22-32 (lodging-house statute) requires a separate lodging-house license from the Town of Weymouth licensing authority, in addition to the state STR registration.