- 6175841809
- hersratingcompany@gmail.com
- 12 Pond St Ashland, MA 01721 United States
- 573 Washington St Quincy, MA 02169 United States
RESNET-certified HERS Ratings for new construction, renovations, Mass Save programs, and MA Stretch Code compliance in Avon, MA.
Avon is one of only 49 Massachusetts municipalities still on the Base Energy Code (10th Edition — IECC 2021 with MA amendments) as of the June 2026 Mass.gov adoption list — the Stretch Code does not apply here. HERS ratings remain an approved compliance path under the Base Code, and a RESNET-certified HERS rater is required to qualify for Mass Save® new-construction incentives.
Related Avon services: Blower Door Testing Avon · Duct Leakage Testing Avon · Stretch Code Compliance Avon · MA Energy Codes Guide — or get a free quote from our RESNET-certified team (617-584-1809).
Sources: 2025 DOER Massachusetts Stretch & Specialized Codes Technical Guidance (Sept 2025); Mass.gov Building Energy Code Adoption by Municipality (June 2026); Mass Save 2026 Residential New Construction program.
Not by local code — Avon is one of just 49 Massachusetts municipalities still on the Base Energy Code (10th Edition, IECC 2021 with MA amendments), so the Stretch Code HERS mandate does not apply. A HERS rating is still an accepted compliance path and is required for Mass Save® new-construction incentives.
There is no mandatory HERS maximum under the Base Code in Avon, but the ERI compliance path follows IECC 2021 limits, and Mass Save incentive tiers require HERS 45 or better for the ENERGY STAR® tier.
Avon follows the Massachusetts Base Energy Code (10th Edition, IECC 2021 with amendments) as of the June 2026 Mass.gov adoption list — one of only 49 communities statewide that have not adopted the Stretch Code.
For comparison, here is the official maximum-HERS table that applies in Massachusetts Stretch Code and Specialized Code communities (Table R406.5, 2025 DOER Technical Guidance):
| Building type | New construction (permits after 7/1/2024) | New construction w/ embodied-carbon credit (R406.5.2) | Accessory Dwelling Units | Major alterations, additions, change of use |
|---|---|---|---|---|
| Mixed-fuel building | 42 | 45 | 52 | 65 |
| Mixed-fuel + solar electric | 42 | 45 | 55 | 70 |
| All-electric building | 45 | 48 | 55 | 70 |
| All-electric + solar electric | 45 | 48 | 58 | 75 |
Scores are measured before counting on-site renewable generation (per R406.5). Historic buildings may opt out for alterations under R503.1.1. Embodied-carbon credits (+3 points) come from low-GWP concrete and insulation EPDs per Table R406.5.3/R406.5.4.
As one of only 49 Base Code communities, Avon projects follow the 10th Edition code (IECC 2021 with MA amendments) via the prescriptive path, the simulated-performance path, or the Energy Rating Index (HERS) path — without the Stretch Code’s lowered HERS caps shown above. Builders in Avon still order HERS ratings for the ERI compliance path, for Mass Save® incentives (which always require HERS verification), and to document energy performance for buyers. If Avon adopts the Stretch Code at a future town meeting, the table above becomes mandatory — surrounding towns already enforce it, so Avon builders often test to those standards today.
Detail sourced from the 2025 Massachusetts Stretch & Specialized Codes Technical Guidance (DOER, Sept 2025), Table R406.5 and Appendix RC.
RESNET-certified HERS Ratings for new construction, renovations, Mass Save programs, and MA Stretch Code compliance in Avon, MA. Our RESNET-certified raters serve Avon and all 351 Massachusetts cities and towns.
New homes in Avon must achieve a HERS score of 55 or below under the MA Stretch Code. HERS Rating Company manages the complete compliance process — from initial energy modeling through on-site testing and certified report delivery.
Required air tightness test — included with every HERS Rating.
Learn More →Required duct blaster test for forced-air HVAC systems.
Learn More →Full IECC 2021 Stretch Code compliance from plan review to certification.
Learn More →HERS Rating pricing in Avon depends on project type: Single-family homes $1,850–$2,500 · Multifamily (per unit) $650–$1,200 · ADUs $1,600–$1,850. Contact us for a free, no-obligation quote for your specific project.
Yes. Avon has adopted the MA Stretch Code, which requires all new residential construction to achieve a HERS score of 55 or below. A RESNET-certified HERS Rating is required to document compliance.
The on-site inspection in Avon typically takes 2–4 hours. We deliver your certified HERS report within 24 hours of the site visit.
New construction in MA Stretch Code municipalities like Avon must achieve a HERS score of 55 or below. The Specialized Stretch Code (adopted in some towns) requires HERS 45 or below for homes over 3,000 sq ft.
Contact HERS Rating Company for a free quote on HERS Rating services in Avon, MA. RESNET-certified, 24-hour turnaround.
We provide HERS Rating services throughout the region. Nearby cities we serve: Stoughton · Randolph · Holbrook · Brockton · Canton
At HERS Rating Company, we are committed to providing the highest quality energy consulting services to homebuilders, architects, and developers across Massachusetts.
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12 Pond St Ashland, MA 01721 United States
573 Washington St Quincy, MA 02169 United States
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