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Codes and Standards

Learn more about Masschusetts building energy codes and and other standards that ensure energy efficiency and cost savings

On this page, you will find information about building energy codes and other energy standards in Massachusetts including code design and requirements

Building energy code and standards highlights

building code

Building Energy Code 

Find out more about the State Building Energy Code, including the Stretch Code
Appliances

Appliance Energy and Water Efficiency Standards 

Learn about the state policy that sets energy and water efficiency standards for appliances

Learn more about building energy codes and high performance buildings in Massachusetts

New buildings built to the Massachusetts specialized and stretch codes require less energy to stay warm in the winter and cool in the summer. Learn more here about the development of these nation-leading codes and the benefits they provide to residents, business, and the whole electric system.

code documents

2025 Massachusetts Building Energy Codes 

Learn more details about the creation of the most recent 2025 Building Energy Code
code development

Stretch Energy Code Development 

Learn more about how DOER updated the existing ‘Stretch Building Energy Code’ as well as the new ‘Municipal Opt-in Specialized Stretch Energy Code’
code adoption

Massachusetts Building Energy Code Adoption by Municipality 

View a map and list showing adoption of energy codes (Base Code, Stretch Code, Specialized Code) by all 351 Massachusetts municipalities with effective date.

Learn about building energy data and performance programs

Measuring a building's energy use can help you understand and describe that building's efficiency and anticipated operating costs. Find below more information on DOER's building energy reporting programs and requirements.

Learn more about appliance standards

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