Home Energy Efficiency Consultants
Yes, in most cases. Massachusetts requires a HERS rating for new residential construction and for large additions or major renovations in communities that follow the Stretch or Specialized Energy Code. A preliminary HERS rating is typically needed for the building permit and a final rating for the certificate of occupancy.
Under the 2025 Massachusetts Stretch Code, new mixed-fuel homes need HERS 42 or lower and all-electric homes 45 or lower; an embodied-carbon credit for low-GWP insulation or concrete adds 3 points. Major additions and Level 3 renovations use separate targets (HERS 65-75) and ADUs 52-58. We confirm the exact path for your Devens project.
Most Massachusetts HERS ratings run from about $600 to $2,500 depending on the size and scope of the project. Call (617) 501-6788 for a free same-day quote for your Devens project.
We offer same-day scheduling and deliver reports in 24-48 hours. Home Energy Efficiency Consultants has completed 15,000+ HERS ratings statewide and holds a 5.0-star rating from 136 Google reviews.


ENERGY STAR® Partner · U.S. DOE Efficient New Home Partner — Verified · Your Trusted Mass Save® PartnerSame-day HERS ratings & blower door testing across Massachusetts. We respond within hours.
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