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%.

Rockport, MA

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Massachusetts Service Areas

North Shore / Cape Ann: Gloucester | Rockpor t | Ipswich | Beverly | Manchester-by-the-Sea | Marblehead | Newbury port | Andover
Greater Boston: Boston | Cambridge | Somerville | Brookline | Newton | Arlington | Winchester
MetroWest: Wellesley | West on | Lexington | Concord
Norfolk County: Needha m | Westwood | Dedham | Dover
County Coverage Hubs: Essex County | Middlesex County | Norfolk County | Suffolk County

Our Expertise: Certified HERS Rater specializing in Massachusetts Stretch Code and Specialized Energy Code compliance. Services include:

Code Compliance: HERS Ratings, Manual J Load Calculations, and energy modeling for new construction, renovations, and additions.
Diagnostic Testing: Blower Door Testing, duct leakage testing, and mechanical ventilation verification.
Renewables: High-Performance Solar system design and battery backup installation.