REScheck & COMcheck Foxborough MA - Quick Facts
Local energy code in Foxborough
- Foxborough enforces the Massachusetts Stretch Energy Code for new construction and major renovations. IECC Climate Zone 5A.
- Massachusetts has three energy-code levels - base (2021 IECC), Stretch, and Specialized (Opt-In) - and Foxborough is on the Stretch Code.
REScheck & COMcheck in Foxborough
- REScheck documents the prescriptive residential path for Foxborough additions, alterations and renovations (from $300); new-construction performance projects use a full HERS energy model instead.
- Commercial projects use COMcheck for the prescriptive path (from $600); larger new commercial buildings need third-party performance certification under the Stretch Code.
- 24-48 hour turnaround - documentation ready to upload with your Foxborough permit application.
2026 Mass Save incentives in Foxborough
- All-electric renovations and additions can earn Mass Save incentives up to $20,000 (Level 1) or $30,000 (Level 2) for a single-family home, verified by a RESNET-certified HERS rater.
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REScheck & COMcheck Foxborough MA
From small additions to commercial fit-outs in Foxborough, we deliver the REScheck and COMcheck reports your Norfolk County building department requires — accurate, signed, and turned around quickly.
What we deliver
A signed compliance report matched to your plans and ready to upload with your Foxborough building permit application.
What Is a REScheck and What Is a COMcheck?
Both are free compliance software tools developed by the U.S. Department of Energy (DOE) to demonstrate that a building meets the International Energy Conservation Code (IECC). They document your envelope, and for commercial work your lighting and mechanical systems, so a plan reviewer in Foxborough can confirm compliance quickly.
What is a REScheck?
REScheck is the DOE’s residential compliance tool. It covers one- and two-family dwellings and low-rise multifamily (three stories or fewer), using a UA trade-off so a stronger wall or roof can make up for a weaker window while the overall envelope still meets the IECC.
What is a COMcheck?
COMcheck is DOE software for commercial buildings and high-rise residential (four stories or more). It checks the building envelope, interior and exterior lighting, and mechanical systems against the IECC or ASHRAE Standard 90.1, and can trade off components across the design.
Is a REScheck Right for Your Foxborough Project?
REScheck is the simplest path for smaller residential projects in Foxborough that do not need a HERS rating. It is typically the right tool for:
- New residential construction or an addition of 1,000 sq ft or less that does not require a HERS rating
- Window and insulation upgrades that must be documented for a building permit
- Additions, alterations, or renovations to a one- or two-family home
- Finished basements, attic conversions, and dormer additions on existing homes
- Detached accessory structures with conditioned space
COMcheck Projects in Foxborough
COMcheck is required for commercial and larger projects in Foxborough. Reach for a COMcheck when your project involves:
- Tenant fit-outs and interior or exterior lighting alterations
- Commercial buildings — offices, retail, restaurants, warehouses, and mixed-use
- Envelope work on commercial structures requiring IECC or ASHRAE 90.1 compliance
- Warehouse, industrial, and light-manufacturing conditioned spaces
- Restaurant build-outs and retail white-box improvements
What We Deliver for Foxborough Projects
Plans matched to code
We enter your assemblies, fenestration, and (for commercial) lighting and mechanical details exactly as designed, so the report reflects what you are actually building in Foxborough.
Fast, permit-ready turnaround
We deliver documentation ready to upload with your building permit application, and we answer plan-review questions if the department asks for revisions.
REScheck report
A signed REScheck compliance certificate matched to your plans, the inspection checklist, and the UA trade-off summary showing your insulation R-values and window U-factors meet the residential energy code.
COMcheck report
The COMcheck Envelope, Lighting, and Mechanical Compliance Certificates plus the Plan Review Checklist — the full package a commercial plan reviewer expects for permit submission.
Serving Foxborough and Norfolk County
Foxborough sits in Norfolk County, Massachusetts, in IECC climate zone 5A — the cold-climate zone that drives the insulation and air-sealing levels your REScheck or COMcheck must document. We prepare compliance reports for projects throughout Norfolk County, matched to the code edition Foxborough currently enforces.
What a REScheck or COMcheck Costs in Foxborough
Transparent starting prices. Final cost depends on project size, number of assemblies, and scope.
- REScheck (residential): starting at $300
- COMcheck (commercial): starting at $600
- Revisions to match plan-review comments are handled promptly
REScheck reports start at $300 and COMcheck reports start at $600 for projects in Foxborough. Send your plans for an exact quote.
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Which Energy Code Report Does a Foxborough Project Need?
Foxborough has not adopted the Stretch Code (adopted by 302 of the state's 351 municipalities) or the Specialized (Opt-In) Code (adopted by 61), so projects in Foxborough follow the Massachusetts base energy code. We confirm Foxborough's current code status against the state list before we prepare any report.
| Your Foxborough project | What the energy code paperwork usually is |
|---|---|
| New single-family home or low-rise residential building | In Stretch Code towns, a HERS rating (maximum HERS 42 mixed-fuel, 45 all-electric) or Passive House. REScheck is not accepted for new homes under the Stretch Code. |
| Residential addition of 1,000 sq ft or less (and not over 100% of the existing home) | REScheck (REScheck-Web, 2023 Massachusetts Stretch Code) or the prescriptive tables |
| Residential addition over 1,000 sq ft or over 100% of the existing home | A HERS rating of the whole house (HERS 65 or lower mixed-fuel, 70 or lower all-electric) |
| Basement or attic conversion with no change to footprint or roofline | No HERS rating required; REScheck or prescriptive documentation |
| Residential renovation or alteration | Prescriptive alteration rules; REScheck can document the envelope. Large "extensive" alterations over 1,000 sq ft may need a HERS rating. |
| New commercial building up to 20,000 sq ft | COMcheck: Envelope, Lighting and Mechanical certificates plus the Plan Review Inspection Checklist |
| New commercial building over 20,000 sq ft | COMcheck Lighting and Mechanical, with the envelope shown by backstop and thermal-bridge calculations, on a performance path (Targeted Performance/TEDI or ASHRAE 90.1 Appendix G) or Passive House |
| Commercial addition, alteration, or lighting/HVAC change | COMcheck for the altered systems |
| Multifamily building over 12,000 sq ft | Passive House or a HERS/performance path |
Based on 225 CMR 22.00 and 23.00 (Massachusetts energy code, 2025 edition). Building departments make the final call, so we confirm the path for your project before we start. Foxborough is in Norfolk County, served from our Framingham (68 South St) office.
How We Prepare Your Foxborough REScheck or COMcheck
Send your plans
Email the permit set for your Foxborough project. We tell you the same day whether you need a REScheck, a COMcheck or a HERS rating.
We model the building
We enter every assembly, window, light fixture and HVAC unit as designed and flag anything that fails before the plan reviewer sees it.
Permit-ready report
You get the signed compliance certificates and checklists, ready to upload with your Foxborough building permit application.
Plan review support
If the building department asks for changes, we revise the report and answer the reviewer's questions.
REScheck & COMcheck for Foxborough Permits
Foxborough is one of the 49 Massachusetts municipalities still on the base energy code. The state's adoption list shows no Stretch Code and no Specialized (Opt-In) Code for Foxborough, while several towns around it have adopted one or the other, so the same project can need different paperwork a few miles apart.
Is a REScheck enough?
For a small residential addition or alteration where the prescriptive path is allowed, yes. A typical example is an addition up to 1,000 sq ft that is not more than 100% of the existing home.
What about a new house?
In Stretch and Specialized towns, new homes need a HERS rating (HERS 42 mixed-fuel or 45 all-electric) and larger renovations need HERS 65 or 70. Those targets are not mandatory in Foxborough while it stays on the base code, so a new home can often follow the prescriptive path. A HERS rating is still an option, and we can tell you which route is simpler for your plans.
And commercial projects?
COMcheck covers the envelope, lighting and mechanical systems for commercial buildings and fit-outs. The extra requirements that Stretch and Specialized towns add for commercial buildings over 20,000 sq ft do not apply in Foxborough.
The Foxborough Building Department at Town Hall, 40 South Street, takes building permits online through PermitEyes. We send each report as a PDF ready to upload. Our Framingham office at 68 South St is the closest HEEC location.
If your lot is near the town line, confirm which town the building sits in before choosing a report, because the energy code follows the municipality where the building is built.
REScheck & COMcheck Questions for Foxborough Projects
Do I need a REScheck or a HERS rating in Foxborough?
Foxborough is on the Massachusetts base energy code, not the Stretch Code, so the Stretch Code's HERS targets for new homes (HERS 42 mixed-fuel or 45 all-electric) do not apply. REScheck is used for additions of 1,000 sq ft or less that are not over 100% of the existing home, basement and attic conversions, and renovations. We confirm Foxborough's code status before we start.
When is a COMcheck required in Massachusetts?
A COMcheck documents commercial energy code compliance for new commercial buildings up to 20,000 sq ft (envelope, lighting and mechanical), for lighting and mechanical on larger buildings, and for commercial additions and alterations such as fit-outs, lighting changes and HVAC replacements. Massachusetts commercial code is based on the 2021 IECC with state amendments in 225 CMR 23.00.
What does a COMcheck include?
The COMcheck Envelope Compliance Certificate, the Interior and Exterior Lighting Compliance Certificates, the Mechanical Compliance Certificate, and the Plan Review Inspection Checklist. Massachusetts 225 CMR 23.00 Section C103.2 lists these as the construction-document requirements for buildings up to 20,000 sq ft.
What does a REScheck include?
A REScheck compares your home's envelope (insulation R-values and window U-values) to the code using a total UA trade-off, so stronger performance in one assembly can offset another. The report includes the compliance certificate and inspection checklist. Mandatory items such as air sealing and duct sealing still apply.
What size addition needs a HERS rating instead of REScheck?
In Massachusetts, a residential addition over 1,000 sq ft, or over 100% of the existing conditioned floor area, needs a HERS rating of the whole house (225 CMR 22.00 R502.1.1). Converting an existing basement or attic without changing the footprint or roofline does not.
What information do you need to prepare a REScheck or COMcheck?
Plans with wall, roof and floor sections, insulation types and R-values, the window and door schedule with U-factors and SHGC, and for commercial work the lighting fixture schedule with wattages, lighting controls, and HVAC and water heating equipment schedules.
Which software version is used in Massachusetts?
REScheck-Web with the 2023 Massachusetts Stretch Code option for residential, and COMcheck-Web set to the 2021 IECC (or ASHRAE 90.1-2019) for commercial, matching the code Massachusetts enforces.
How much does a REScheck or COMcheck cost in Foxborough?
REScheck reports start at $300 and COMcheck reports start at $600. The final price depends on the size of the project and how many assemblies and systems need to be entered. Send your plans for an exact quote.
Is Foxborough on the Stretch Code?
No. The state's adoption list shows Foxborough on the Massachusetts base energy code. It has not adopted the Stretch Code or the Specialized (Opt-In) Code.
How do I file a building permit in Foxborough?
The Foxborough Building Department takes building permit applications online through PermitEyes, linked from the department's page on the town website. We send your REScheck or COMcheck as a PDF to upload with your plans.
Related: HERS rating in Foxborough · Blower door testing · COMcheck & REScheck reports
Need a REScheck or COMcheck in Foxborough?
Send us your plans and we will tell you which report you need and get it back to you fast — ready for your Foxborough permit.
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HERS Ratings Across Foxborough and Nearby Communities
Home Energy Efficiency Consultants rates new homes, additions, and major renovations throughout Foxborough — including Foxborough Center, and South Foxborough. Every Foxborough project is filed with the Town of Foxborough Building Department, and we handle the energy model, blower door and duct leakage testing, and the compliance paperwork from start to finish.
We also serve the communities right around Foxborough, including Mansfield, Walpole, Wrentham, Sharon, and Norton. Our Framingham office at 68 South St is the closest of our four Massachusetts locations — see our Framingham office or call (617) 501-6788 to get a Foxborough rating on the schedule.
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