Full IECC 2021 MA Stretch Code Compliance — Plan Review to Final HERS Certification
The MA Stretch Code requires new residential buildings to achieve: a HERS score of 55 or below · maximum 3.0 ACH50 air leakage · maximum 4% total duct leakage — all verified by a RESNET-certified rater. As of January 2023, it is based on IECC 2021 and adopted by over 270 MA municipalities.
Complete Massachusetts Stretch Energy Code 2021 compliance services for residential new construction. We manage the entire process — from plan review and energy modeling through on-site testing and final HERS certification.
With hundreds of certified projects statewide, we offer unmatched expertise, fast turnaround, and full compliance support for builders, developers, and homeowners.
Before construction, we review your plans and create an energy model to verify compliance and identify cost-effective paths to meeting Stretch Code requirements.
Intermediate blower door and duct tests during construction verify compliance before it’s too late to make corrections.
We perform the complete HERS Rating including all required tests and deliver a RESNET-certified report documenting your compliance.
Our RESNET-certified HERS reports are accepted by all Massachusetts building departments as documentation of MA Stretch Code compliance.
Stretch Code compliance testing is often required for Mass Save rebates. We handle both compliance certification and Mass Save documentation.
Our RESNET-certified raters have helped hundreds of MA builders navigate Stretch Code requirements from design through final certification.
A clear four-step process designed to keep your project on schedule and on budget.
Submit your building plans. We review them, create an energy model, and provide a compliance roadmap and transparent quote.
We model your plans to a HERS score and identify compliance risks before construction begins — allowing design changes cost-effectively.
Intermediate tests as needed — pre-insulation blower door and duct tests — to verify compliance during the construction process.
Final HERS Rating, RESNET-certified compliance report, and documentation for your building permit office.
We offer all services required for new construction compliance in Massachusetts — schedule them together for maximum savings.
MA Stretch Code compliance package pricing: Single-family homes $1,850–$2,500 · Multifamily (per unit) $650–$1,200 · ADUs $1,600–$1,850. Full package includes HERS Rating, blower door testing, and duct leakage testing. Contact us for a free, project-specific quote.
The MA Stretch Code requires new homes to achieve: HERS score 55 or below · blower door 3.0 ACH50 or less · duct leakage 4% or less — all verified by a RESNET-certified rater. Adopted in 270+ MA municipalities.
The Stretch Code is adopted in over 270 MA municipalities, including most of Greater Boston, MetroWest, North Shore, South Shore, and many others. Check with your local building department.
MA Stretch Code compliance is documented through a RESNET-certified HERS report. Our reports are accepted by all Massachusetts building departments.
The Specialized Stretch Code requires homes over 3,000 sq ft to achieve HERS score 45 or below. We can help determine which code applies to your project.
Yes. We provide complete MA Stretch Code compliance services for new construction across all 351 cities and towns in Massachusetts.
Find your city below for a location-specific service page with local information.
Contact HERS Rating Company for a free, no-obligation quote. Fast, accurate, RESNET-certified results across all 351 Massachusetts cities.