Belchertown, Mass., Code of Bylaws ch 235 § 235-5

A. The Board shall, by order or regulation as provided in § 235-6 , make such individual or general adjustments, either upward or downward, of the maximum rent established by § 235-3 for any mobile home park accommodation as may be necessary to remove hardships or correct inequities for both the owner and tenant, and in so doing shall observe the principle of maintaining rents at levels which will yield to owners a fair net operating income for such mobile home park accommodations. B. The Board, by regulation, may establish further standards and rules consistent with the foregoing. The Board may promulgate a schedule of standard rental increases or decreases for improvement or deterioration in specific services and facilities. C. Notwithstanding any other provision of this section, the Board may refuse to grant an upward adjustment of maximum rent if it determines that the affected mobile home park accommodation does not comply with the State Sanitary Code or the Town of Belchertown Code or any other applicable code, ordinance or state law regulating the conditions of housing accommodations and if it determines that such lack of compliance is due to the failure of the owner to provide normal and adequate repairs and maintenance. The Board may refuse to make a downward adjustment of maximum rent if it determines that the tenant is more than 60 days in arrears in payment of rent, unless such arrearage is due to a withholding of rent under the provisions of MGL c. 239, § 8A , or if the tenant is in substantial violation of any enforceable rule of the mobile home park or if the tenant is in violation of any laws or ordinances which protect the health and safety of other mobile home park residents.