When is a HERS Rating required for a new home in Massachusetts?

A HERS Rating is required for new construction projects in Massachusetts towns that have adopted the Stretch Energy Code or the Specialized Opt-In Energy Code. These ratings use energy modeling and third-party verification to confirm that the home meets whole-home performance standards.

When do additions or renovations trigger Stretch or Specialized Opt-In Code requirements?

Renovations require a HERS Rating if they are an Extensive Alteration (IRC) or Level 3 Alteration (IEBC) affecting over 1,000 sq. ft. or 100% of the existing conditioned floor area. Additions trigger requirements when they exceed 1,000 sq. ft. or increase floor area by more than 100%.

CONTACT SPECTRUM ENERGY | LOCAL MA HERS RATER
& SOLAR EXPERT

Spectrum Energy is based in Gloucester, Massachusetts, proudly serving homeowners, developers, and builders throughout Eastern Massachusetts. Whether you’re navigating the MA Specialized Opt-In Code, planning a high-performance solar installation, or requiring certified diagnostic testing, our team is here to provide expert guidance.

Core Service Areas

We specialize in high-performance energy consulting and HERS rating for the North Shore, the Route 128/95 corridor, and Specialized Code communities, including:

North Shore: Gloucester, Rockport, Manchester-by-the-Sea, Beverly, Ipswich, Hamilton, Newburyport, and Salem.
Metro & Tech Belt: Andover, Concord, Lexington, and Lincoln.
Southern Reach: Westwood, Dedham, Needham, Wellesley, Newton, and Brookline.

Don’t see your town? We frequently travel for complex HERS modeling and solar projects across the region—reach out to see if we're a fit for your project.

Ready to connect? Use the form below or contact us directly to get guidance on your energy project. Please include any project details you have, this helps our team provide the most accurate guidance and ensures a productive conversation.