225 CMR 24.02
Definitions
Comparable Municipalities. Municipalities designated by the Department for data
collection and reporting purposes that share similar relevant characteristics to
Participating Communities.
Demonstration Project. Not more than ten cities or towns as approved by the Department
pursuant to 225 CMR 24.00 that may, notwithstanding M.G.L. c. 40A, § 13, M.G.L. chs. 142,
164 any other general or special law to the contrary, adopt and amend general or zoning
ordinances or by-laws that require new building construction or Major Renovation projects to
be fossil fuel-free, and enforce restrictions and prohibitions on new building construction and
Major Renovation projects that are not fossil fuel-free, including through the withholding or
conditioning of building permits.
DHCD. The Massachusetts Department of Housing and Community Development, as
established by M.G.L. c. 23B.
Department. The Massachusetts Department of Energy Resources, as established by
M.G.L. c. 25A.
Fossil Fuel-free. As defined by a city or town to include, but not be limited to, an entire
building or entire condominium unit that does not, in support of its operation after
construction, utilize coal, oil, natural gas, other fuel hydrocarbons, including synthetic
equivalents, or other fossil fuels.
Home Rule Petition. A petition submitted to the General Court pursuant to Amendments to the
Constitution of the Commonwealth, art. 89, § 8.
Hospitals or Medical Offices. A facility licensed or approved by the Department of
Public Health to provide health care, including clinics licensed as health care facilities
and facilities that provide substance use disorder treatment services, including outpatient
withdrawal management, opioid treatment programs, office-based opioid treatment
programs, acute treatment services (inpatient detoxification), and clinical stabilization
services.
Local Approval. By a majority vote of the:
(a) city council with the approval of the mayor in the case of a city with a mayor elected to
serve as the chief executive officer of the city;
(b) city council in every other city;
(Mass. Register #1501, 8/4/2023)
(c) annual town meeting or a special town meeting called for that purpose in the case of a
municipality with a town meeting form of government; or
(d) town council in the case of a municipality with a town council form of government.
Major Renovation. Major renovation is defined as:
(a) low-rise residential additions over 1,000 square feet and additions exceeding 100% of
the conditioned floor area of the existing dwelling unit;
(b)
additions over 20,000 square feet and additions that exceed 100% of the conditioned
floor areas of the existing building for all building use types except low-rise residential;
(c) Level 3 Alterations as defined in the International Existing Building Code (IEBC 2021)
(which exceed 50% of the existing conditioned floor area) exceeding 1,000 square feet for
low rise residential, or exceeding 20,000 square feet for all other building uses;
(d) Change of use of over 1,000 square feet per International Energy Conservation Code
(IECC 2021) § R505; or
(e) change of use of over 20,000 square feet or change of use of 100% of the conditioned
floor areas of the existing building for all building use types except low-rise residential,
International Energy Conservation Code (IECC 2021) § C505.
Participating Community. A city of town approved by the Department for participation in
the Demonstration Project.
Prioritized Community. One of the first ten communities to file a home rule petition with the
general court and listed in 225 CMR 24.03(1); provided, however, that a city or town that
submits a letter of withdrawal pursuant to 225 CMR 24.03(2) shall no longer be considered a
Prioritized Community.
Process Load. Energy demand in commercial or industrial buildings that is not covered by
the Massachusetts building energy code.
Research Laboratories for Scientific or Medical Research. A building where a laboratory
procedure or research activity occurs, where the building has an average ventilation at full
occupancy greater than 0.5 cfm/sf. Such buildings shall provide the ventilation design
documentation described in 225 CMR 23.00: Massachusetts Front-end Amendments to the
International Energy Conservation Code 2021 Massachusetts Stretch Energy Code – 2023
Commercial Amendments to IECC2021, § C103.2 at the time of building permitting.
Substitute Community. A city or town that applies to the Department for participation in
the Demonstration Project that is not a Prioritized Community listed in 225 CMR 24.03(1).