Massachusetts Net Zero Building Goals
Massachusetts has set a goal of achieving net zero greenhouse gas emissions by 2050. As part of this plan, the state has adopted increasingly stringent building energy codes and incentive programs to push new construction toward net zero performance. For residential developers, this means the MA Stretch Code 2021 is your current baseline — and future codes will be even more demanding.
What Is the Current Net Zero Standard for Massachusetts Buildings?
The MA Stretch Code 2021 sets a HERS score of 55 or less as the minimum for new single-family construction. Some municipalities have adopted the optional MA Specialized Opt-In Code, which targets a HERS score of 42 or less and is designed as a stepping stone to net zero. True net zero buildings typically achieve a HERS score of 0 or below (HERS 0 = net zero energy, below 0 = net energy producer).
Boston’s BERDO Requirements for Large Buildings
Boston’s Building Emissions Reduction and Disclosure Ordinance (BERDO) applies to large existing buildings (25,000+ sq ft) and sets annual greenhouse gas emissions limits that tighten over time toward net zero. New large residential and commercial construction in Boston must also meet aggressive energy performance standards. BERDO compliance is separate from the MA Stretch Code and applies to the building’s operational carbon footprint.
Mass Save Incentives for High-Performance New Construction
Massachusetts developers can access significant Mass Save rebates for exceeding Stretch Code minimums. The New Construction program offers cash incentives for achieving a HERS score below 55, with higher rebates for lower HERS scores. HERS Rating Company is a Mass Save-approved HERS Rater and can help you maximize your incentive eligibility. See current Mass Save rebate levels.
Get Certified for Massachusetts Net Zero Construction
HERS Rating Company works with developers and builders pursuing net zero and near-zero energy performance in Massachusetts. We provide HERS Ratings, blower door testing, duct leakage testing, and MA Stretch Code compliance services statewide. Contact us to discuss your project.
Related Services in Massachusetts
HERS Rating Company is a RESNET-certified, Mass Save-approved HERS Rater serving all 351 Massachusetts cities and towns.
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Net Zero Building Requirements in Massachusetts
Massachusetts’ Specialized Stretch Energy Code pushes new construction toward net-zero energy performance. Requirements include a HERS score of 42 or below, enhanced insulation, high-efficiency mechanical systems, and solar-ready construction. HERS Rating Company provides compliance services for the Specialized Stretch Code across Massachusetts.
Is Net Zero Required in Massachusetts?
The Specialized Stretch Code (near-net-zero) is required in designated Green Communities. Most municipalities use the standard Stretch Code (HERS 55 or below). HERS Rating Company will confirm exactly which code applies to your project and provide full compliance services. Call 617-584-1809 for a free consultation.