Southborough, Massachusetts Building Permit Guide

In Southborough, the Building / Zoning Department on the lower level of 9 Cordaville Road issues building, electrical, plumbing, gas and mechanical permits and enforces the zoning bylaw, with applications filed in the Town’s OpenGov portal. The fee schedule in force since January 4, 2024 charges $12 per $1,000 of total construction cost for building work, with a $60 residential and $100 commercial minimum, and adds a 4% technology fee to every rate.

What requires a building permit in Southborough?

Chapter 62 of the Town Code makes it unlawful to build, alter, remove or demolish a building, or change its class of occupancy, without first filing with the Inspector of Buildings and obtaining a permit; minor repairs to existing buildings may be made without one. The Department’s own handouts settle some common questions.

A fence over six feet must also meet the zoning setbacks for buildings, and a fence placed in the public right of way can be removed by the Town.

What Southborough decides and what the state holds

The State Building Code, 780 CMR, is written by the Board of Building Regulations and Standards and applies as written; the Town’s documents page lists the 10th edition. Southborough sets its own permit fees through the Select Board, its zoning bylaw (Chapter 174), its wetlands and stormwater bylaws, its pool enclosure rules and its demolition delay bylaw. Town Meeting accepted the Stretch Energy Code on April 12, 2016 (Article 28), effective January 1, 2017, and the Department’s energy code page posts the Stretch Code appendix and a flow chart for existing buildings.

Southborough building department: who handles permitting

Building Commissioner Mark Robidoux heads the Building / Zoning Department, part of Planning & Development, with a Wiring Inspector, a Plumbing Inspector and a principal assistant to the Zoning Board of Appeals. The office is on the lower level of Cordaville Hall, with its entrance from the back parking lot; Town offices such as the Town Administrator remain at the Town House, 17 Common Street. The Conservation office and the Health Department, which review the wetland, floodplain and septic questions on a building file, also work out of 9 Cordaville Road.

Since April 24, 2026 the wiring inspector has enforced the 2026 Massachusetts Electrical Code, and all wiring work in town must be done under an electrical permit from the Building Department.

Southborough permit types and forms

OpenGov holds the building, electrical, HVAC, plumbing and gas applications; a paper building application is still posted. The Building Links and Documents page carries the supporting forms: workers’ compensation affidavit, property owner authorization, the Board of Health form for a building alteration, the affidavit for a homeowner-applied building permit, the state-approved home improvement contract, final cost and final construction control affidavits, the 10th edition initial construction control document, a demolition permit sign-off sheet, a sign checklist and an existing commercial building checklist for the 2021 IEBC with Massachusetts amendments.

Residential permits

For a whole new house, the Department’s plan review sheet asks for a wall bracing analysis with a lateral brace plan for each floor, a draft HERS certificate, smoke, carbon monoxide and heat detector locations on every floor, LVL and truss layouts keyed to the drawings, foundation, framing, elevation and section sheets, the department sign-offs, an EV charger ready circuit in the garage, a solar ready area and a site plan certified by a professional land surveyor. Pools need the homeowner pool and spa safety addendum, and a powered safety cover installed to ASTM F1346 has its own homeowner declaration.

Homeowners who apply for their own building permit sign the Town’s affidavit for a homeowner-applied permit; the Department also posts a state table of which jobs need a construction supervisor license or home improvement contractor registration, and links to the state lookups for both.

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

Commercial permits

Commercial building work is charged at the same $12 per $1,000 with a $100 minimum, and commercial annual certificates of inspection are $60. Larger projects use the construction control documents, an initial filing at the start and a final affidavit at the end, and existing commercial buildings are reviewed with the Department’s IEBC checklist. The Department also posts guidance on independent structural engineering review.

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 interpretation. Questions about whether a use or project fits the zoning bylaw go in as a zoning interpretation request in OpenGov, and owners can book a meeting with the Building Commissioner to walk through plans before starting. The Department points anyone planning an accessory dwelling unit to the special permit section of the bylaw (174-9) and posts the residence district rules and the zoning map filed with the Town Clerk in March 2024.
• Zoning Board of Appeals. Each 2026 hearing has a Building Commissioner review deadline about two months ahead and a filing deadline two weeks after that; for the November 18, 2026 meeting they were September 16 and October 1.
• Planning Board. Five elected members review site plans, subdivisions and special permits, usually on two Mondays a month at 6:30 pm; the January 4, 2027 meeting has a December 1, 2026 filing deadline.
• Conservation Commission. Applies the Wetlands Protection Act, the Rivers Protection Act, the local wetland bylaw (Chapter 170) and the stormwater and erosion control bylaw (Chapter 154). Its Conservation Agent is also the Floodplain Administrator, at 508-485-0710, ext. 3024; hazardous tree removal near resource areas has its own application.
• Health Department. Septic permits and inspections are handled by the sanitary inspector at Cordaville Hall (508-481-3013); Southborough shares public health staff with Boylston, Northborough and Westborough through the Greater Boroughs Partnership for Health.
• Demolition delay. See the code section below for buildings older than 1925.

Southborough permit costs and fees

The Department’s three fee schedules are dated January 4, 2024 and took effect immediately; under Chapter 62 the Select Board sets the building fee. Every rate is subject to a 4% technology fee, no fee falls below its minimum, and there are no credits or refunds.

For example, a $100,000 residential addition has a building fee of $1,200 (100 × $12) before the 4% technology fee is applied. The Department’s January 2026 open-permit policy charges double permit fees for work started without a permit; the older January 2024 fee schedules still print three times the permit fee, plus a complaint to the state licensing board, so ask which applies before you file.

Trade permits and who may pull them

• Electrical: issued by the Building Department and inspected by the Wiring Inspector (ext. 2019). Residential fees follow the total construction cost, and each added inspection is $60.
• Plumbing and gas: issued by the same office and inspected by the Plumbing Inspector (ext. 2020), with fixture-based fees.
• Mechanical and sheet metal: HVAC is among the permits the Department handles. Its mechanical and sheet metal page, updated August 15, 2025, links the 2024 International Mechanical Code and the state sheet metal rules, 271 CMR, including the Board of Examiners of Sheet Metal Workers’ permit and inspection section.
• Fire Department: signs off smoke detection equipment before the building final.

Open electrical, plumbing and gas permits become void after one year; a new permit, current-code work and a fresh inspection are then needed, and walls may have to be opened.

How to apply for a Southborough building permit

Review, corrections and what causes delay

780 CMR 105.3.1 requires the building official to act on an application within 30 days of filing. In Southborough, a new-house file needs the department sign-offs and the HERS and wall bracing sheets from the plan review list before review can finish, and any zoning relief must already be granted; plan for the ZBA’s Building Commissioner review deadline, which falls weeks before its own filing date. A permit with no work or inspection for 180 days is treated as abandoned unless the Department extends it in writing for another 180 days.

Inspections in Southborough

Building inspections are made on Mondays and Tuesdays from 1:00 to 4:00 pm and on Wednesdays and Thursdays from 9:30 am to noon, never on Fridays; call the office to book them. Wiring and plumbing inspection hours vary by inspector.

• Rough: after the electrical and plumbing roughs are signed off, with framing, fire blocking, bath fans vented outside, roof vents, rough grading, fireplace clearances and chimney flashing complete. No insulation goes in until this is signed.
• Insulation and ventilation: the house weather-tight and ceiling insulation in place, except blown insulation, which is checked at the final.
• Final: finished wiring and plumbing signed off, smoke detection approved by the Fire Department inspector, and the site broom-clean.

Chapter 62 bars anyone from using a new or converted building until the Inspector of Buildings issues a certificate of occupancy; a temporary certificate for part of a building is possible. Under the open-permit policy, a permit missing only its final can be closed if the card and all other finals are in hand; if inspections were skipped, a registered design professional must close them out with an affidavit and a $50 filing fee, and work done with no permit needs a stamped affidavit from a design professional.

Building code and local bylaws in Southborough

Southborough enforces 780 CMR with the Stretch Energy Code, accepted by Town Meeting in 2016. Its demolition delay bylaw (Chapter 63, adopted April 14, 2015) covers buildings built before 1925 that appear in the Town’s Historic Properties Survey. The Building Inspector forwards a demolition application to the Historical Commission within seven business days; the Commission rules on significance within 10 business days, and if a significant building is found preferentially preserved after a hearing, no demolition permit may issue for nine months. Demolishing such a building without following the bylaw bars building permits on the lot for two years. FEMA lists Southborough as a participating community in the National Flood Insurance Program, with flood maps effective July 16, 2014.

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

Southborough permit search and official resources

OpenGov shows applicants their own permits and inspection results. Records of past permits on a property can be requested through the Town’s NextRequest public records portal; the Town Administrator and Assistant Town Administrator serve as Records Access Officers at the Town House.

• Southborough Building / Zoning Department
• Building office location, hours and inspections
• Southborough OpenGov permit portal
• Building fee schedule
• Electrical fee schedule
• Gas and plumbing fee schedule
• Building links and documents
• Permitting checklists
• Whole-house plan review requirements
• List of required building inspections
• Open permit / work without a permit policy (January 2026)
• Fence guidance
• Pool links and documents
• Energy code links and documents
• Request a zoning interpretation
• Commonly applied zoning bylaw sections
• Conservation Commission
• Zoning Board of Appeals
• Planning Board
• Health Department
• Southborough Town Code (eCode360)
• Public records requests (NextRequest)
• FEMA Community Status Book, Massachusetts

Southborough building permit FAQ

How much does a building permit cost in Southborough?

$12 per $1,000 of total construction cost, with a $60 residential and $100 commercial minimum, plus a 4% technology fee on the rate.

Where is the Southborough Building Department?

On the lower level of 9 Cordaville Road, with the entrance in the back parking lot. Call 508-485-0717 Monday to Thursday from 7:00 am to 4:00 pm or Friday until 11:00 am.

Do I need a permit for a fence?

Not for a fence up to six feet high, under the Department’s fence guidance. Taller fences are treated as structures and must meet the building code and zoning setbacks.

Do I need a permit for an above-ground pool?

Yes. Chapter 155 requires a permit for any pool, and the pool must be enclosed by a barrier at least four feet high; only small portable wading pools are exempt from the bylaw.

What happens if a permit stays open?

A building permit with no work or inspections for 180 days is treated as abandoned, and trade permits become void after a year. Reopening an expired permit costs $50.

Can an old house be demolished right away?

Not if it was built before 1925 and is on the Historic Properties Survey: the Historical Commission reviews it, and a building it decides to preserve faces a nine-month delay.

Which energy code applies?

The Stretch Energy Code, accepted by the April 2016 Town Meeting and effective January 1, 2017.

Who handles septic permits?

The Health Department’s sanitary inspector at Cordaville Hall, 508-481-3013.

Simplify Southborough 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 Southborough permitting. Requirements, fees, and procedures change; confirm details with the permitting authority before relying on them.