Sandwich, Massachusetts Building Permit Guide

Sandwich’s Building Department, part of Community Development at 100 Route 6A, issues building, plumbing, gas and electrical permits and takes applications through PermitEyes; every inspection is then booked by phone at (508) 888-4200. A house addition costs $200 for the first 100 square feet plus $50 for each further 100 square feet or part of it, under the schedule in force since January 1, 2025.

The part of Sandwich north of Route 6 lies in the Old King’s Highway historic district, and the town’s permit checklist expects the district committee’s stamped approval, the Conservation Commission’s recorded order and proof of a septic application to be attached, where they apply, before the building application is complete.

The Sandwich Building Department covers the whole town, including the part of Sandwich on the western side of the Cape Cod Canal. Bourne, Barnstable and Mashpee have their own building departments.

What requires a building permit in Sandwich?

The state building code, 780 CMR, sets what needs a permit and what is exempt. The department asks owners to call before starting any construction, renovation or installation, and its 2025 schedules show the permit types it issues.

What the town decides and what the state holds

The Board of Building Regulations and Standards writes the building code and Sandwich cannot amend it. The town decides its zoning rules (the checklist cites town bylaw section 1220 for the surveyor’s plot plan), the Wetlands Bylaw in Chapter 7 of the general bylaws, Board of Health rules, permit fees and the energy path: Town Meeting adopted the Stretch energy code as Chapter 11 on November 14, 2022. Historic review north of Route 6 comes from a 1973 state act creating the Old King’s Highway district.

Sandwich building department: who handles permitting

Building Commissioner Ian Reid leads the department, with a building inspector, an electrical inspector, a plumbing and gas inspector and office staff, inside the Community Development division at the town offices. Setback questions can be sent to the department’s setbacks email address listed on its page.

Permit types

Residential permits

The residential submission checklist (updated March 19, 2024) asks for a scaled plot plan by a professional land surveyor whenever the work goes outside the existing footprint, showing 2-foot contours, all structures, all septic components, the proposed work and setbacks. Design drawings must be scaled, legible and, if digitally secured, open to plan review comments; they cover floor plans, sections, elevations, foundation and framing plans, beam and header sizing (steel stamped by a structural engineer), smoke, CO and heat detectors and insulation values. New construction adds a preliminary HERS rating plus EV-ready and solar-ready details; alterations state their energy compliance method.

Building or remodeling a home here? Alliance handles residential permit applications, so the crew isn't waiting on the counter.

Commercial permits

Commercial work has its own submission checklist and fee schedule: $500 for the first 100 square feet plus $50 per additional 100 square feet, flat $250 fees for re-roofing or re-siding, and $50 per window or door up to $500. A change of use, ownership or tenant brings a $100 safety inspection, and assembly and alcohol-serving establishments pay $100 to $800 for a certificate of inspection depending on occupancy. Short-term rentals register for $150 plus a $100 inspection.

For tenant improvements and new commercial builds, Alliance handles commercial building permits through issuance. More on this: commercial building permits explained.

What comes before the building permit

• Zoning: a ZBA special permit, recorded at the Barnstable Registry of Deeds, is needed when an extension or alteration increases a nonconforming structure’s nonconformity by 30% or more, or when work in the flood zone exceeds 301 square feet; call Planning before adding an ADU or accessory apartment.
• Conservation Commission: work near wetlands needs an order of conditions, determination or administrative review under the state act and the town’s Chapter 7 Wetlands Bylaw; the commission meets on the first and third Wednesday at 5:30 pm, and the recorded order goes with the building application.
• Board of Health and Title 5: where septic work is involved, and for every new home, attach proof that a septic application signed by the installer was submitted to the Health Department, which issues septic, percolation test and well permits.
• Old King’s Highway: exterior changes, signs, sheds, fences and demolition inside the district need a certificate from the Historic District Committee, with its stamped elevations attached to the building application.
• New homes: a letter from the Sandwich Water District, or a certificate of analysis for a well, and a driveway and curb cut application with Engineering.

Sandwich permit costs and fees

The residential, commercial and plumbing, gas and electrical schedules all took effect on January 1, 2025. Fees double for work started before all required permits are issued.

Two other boards charge their own fees on many house projects. The Historic District Committee charges $50 for a new building, $35 for an addition, alteration, shed or sign, $35 for a certificate of demolition and $10 for a certificate of exemption; it notes that application and legal advertising fees are now combined. The Conservation Commission’s schedule (updated August 15, 2025) sets a Notice of Intent environmental review fee of $400 for decks and small alterations under 500 square feet and $450 for a single-family home, garage, septic system or pool, each plus a $50 application fee, a $30 legal ad fee and the state Wetlands Protection Act fee. Very small jobs can instead go through the commission’s administrative review for $75, if the Assistant Director of Natural Resources agrees they qualify; approved work must be finished within six months, with a 2-by-3-foot permit sign posted where the street can see it.

Worked example: a 450-square-foot addition is $200 for the first 100 square feet plus 4 × $50 for the remaining 350 square feet (three full blocks of 100 and one part), or $400. A 16-by-20-foot deck (320 square feet) is 320 × $0.45 = $144.

Trade permits and who may pull them

Plumbing, gas and electrical permits are filed in PermitEyes and inspected by the town’s own electrical inspector and plumbing and gas inspector, who work Mondays, Wednesdays and Fridays. Replacing a water heater or boiler takes both a plumbing and a gas permit, and an energy storage system or solar panels removed for a re-roof also need an electrical permit alongside the building permit. Residential electrical additions and alterations are charged $40 per inspection.

Trade permits go to state-licensed electricians, plumbers and gas fitters. The building permit is pulled by a contractor holding a Construction Supervisor License, with Home Improvement Contractor registration on an existing owner-occupied home, or by an owner doing their own work as the state code allows.

How to apply for a Sandwich building permit

Review, corrections and what causes delay

Under 780 CMR 105.3.1 the building official must issue or deny a permit in writing within 30 days of the application being filed. In Sandwich the outside approvals the checklist demands — historic, conservation, ZBA and septic — are what usually decide how long a project takes and each one has to be attached to the building application. Amendments to an issued permit are filed in PermitEyes and charged by area.

Inspections in Sandwich

All inspections are scheduled by telephone at (508) 888-4200. Building inspections run Monday through Friday; book the day before or by 9:30 am on the day, and inspectors begin at 10:00 am and work through their list without set appointment times. Plumbing, gas and electrical inspections happen on Mondays, Wednesdays and Fridays, booked the day before or between 8:00 and 9:00 am that morning, starting at 9:00 am. If the building holds personal belongings, someone must be there for the inspection.

Each issued building permit lists its required inspections, and results post to the PermitEyes account. New homes must have their final HERS rating before the final building inspection. For a demolition, the applicant attests that water, gas, electricity and cable are shut off with provider releases, and keeps the waste facility receipts, which are needed for the required inspections. Re-inspections cost $50.

Building and energy code in Sandwich

Massachusetts has one State Building Code, 780 CMR, for every city and town; towns cannot rewrite it, though many opt into a stricter energy code. The trades run under their own state codes. Massachusetts rules

Sandwich enforces the 10th edition of 780 CMR. Chapter 11 of the town bylaws, adopted at Town Meeting on November 14, 2022 (Article 7), incorporates the Stretch energy code with future editions, enforceable by the Building Commissioner and effective July 1, 2023; the bylaw adopts the Stretch path, not the Municipal Opt-in Specialized code. FEMA lists Sandwich as a participating flood insurance community with maps effective July 16, 2014, and its Community Rating System class 6 gives policyholders a 20% discount.

Sandwich permit search and official resources

Applicants follow their own permits, sign-offs and inspection results in PermitEyes. Records of other properties are requested from the Town Clerk, who is the town’s records access officer and receives every public records request; the town’s online request form is optional.

• Sandwich Building Department — inspection rules, fee schedules and checklists
• Sandwich PermitEyes portal
• Residential fee schedule (January 1, 2025)
• Commercial fee schedule (January 1, 2025)
• Plumbing, gas and electrical fee schedule (January 1, 2025)
• Residential permit submission checklist and commercial checklist
• Demolition shut-off requirements
• Town of Sandwich bylaws — Chapter 11 Stretch code, Chapter 7 wetlands
• Historic District Committee — OKH applications
• Sandwich Conservation Commission
• Sandwich Health Department
• Public records request form

Sandwich building permit FAQ

How much is a building permit in Sandwich?

For house work, $200 covers the first 100 square feet and each additional 100 square feet, or part of it, adds $50. Decks, porches and pools are $0.45 per square foot, and commercial work starts at $500.

How do I schedule an inspection in Sandwich?

By phone at (508) 888-4200: building inspections the day before or by 9:30 am, trade inspections the day before or between 8 and 9 am, on Mondays, Wednesdays and Fridays.

Is my Sandwich property in the Old King’s Highway district?

The district covers the land north of the centerline of Route 6 to Cape Cod Bay, from the Bourne line to the Barnstable line, plus the bayside part of Sandwich west of the canal. Exterior work there needs a Historic District Committee certificate or exemption.

Do I need a surveyor’s plot plan?

Yes, whenever the project goes outside the existing footprint; it must show 2-foot contours, structures, septic components and setbacks.

Does Sandwich use the Stretch energy code?

Yes. Chapter 11 of the bylaws has applied the Stretch code since July 1, 2023, so new homes need a HERS rating and EV-ready and solar-ready details.

When does flood zone work need a special permit?

When the work in the flood zone is over 301 square feet, the checklist calls for a recorded ZBA special permit before the building permit.

What does a shed permit cost in Sandwich?

$50 for a shed under 200 square feet; larger sheds are charged like additions, $200 for the first 100 square feet plus $50 per further 100.

Can a small project near a wetland skip a Conservation hearing?

Sometimes. Minor work that meets the commission’s conditions can be approved by administrative review for $75 without a Notice of Intent; if staff doubt it qualifies, a full filing and hearing are required.

Simplify Sandwich permitting with Alliance Permitting

Alliance Permitting is a permit documentation and submission company in Massachusetts. We prepare your paperwork, file it correctly and coordinate with the permitting authority through issuance. We are not a contractor and we do not perform licensed plan review or inspections; that work stays with your licensed team and the jurisdiction.

This guide is provided by Alliance Permitting for general information about Sandwich permitting. Requirements, fees, and procedures change; confirm details with the permitting authority before relying on them.