Building Energy Codes

The Town of Andover is one of 300 communities in the Commonwealth to voluntarily adopt the Stretch Code, which focuses on improving a building's energy performance above and beyond base energy code requirements. The Stretch Code was last updated in 2023 by the Massachusetts Department of Energy Resources (DOER). In 2023, DOER also developed a new municipal Opt-in Specialized Code (Specialized Code), to ensure that new residential and commercial constructions will be consistent with Massachusetts' greenhouse gas emissions limits in future years. Specifically, the Specialized Code asks building owners to go beyond energy efficient building envelope designs to take advantage of all-electric heating/cooling, cooking and domestic hot water technology, and to encourage the adoption of electric vehicles.

Currently, 31 communities in Massachusetts have adopted the Specialized Code. For Andover, adoption would require Town Meeting approval. The Town is partnering with the Andover Green Advisory Board and Andover WECAN to host information sessions and encourage public conversations. Sign up below!

Residential Specialized Code Information Session 2024

Please join us on Monday, March 4th at 6 PM for the "Specialized Energy Code and Decarbonizing New Homes" Virtual Information Session, featuring speakers from DOER, Passive House MA and PSD, as well as an Andover resident. The specialized energy code applies only to new construction, and new Mass Save incentives are available for homeowners. 

Advanced registration using the Memorial Hall Library Webinar sign-up link is required. Please use the link below to register:

The information session will be recorded. The recording along with the presentation materials will be available on this webpage after the event.

1.24.24 Specialized Energy Code

On January 24, 2024, 4 PM Eastern, the Town held the "Specialized Energy Code: Decarbonizing Commercial Buildings" Virtual Information Session, featuring speakers from DOER, SMMA and PSD Consulting and joined by over 30 attendees.


  1. Overall Stretch Code and Specialized Energy Code FAQ (
  2. 225 CMR 23.00 Language for Commercial Buildings (
  3. Stretch Code Technical Guidance Document