New Canaan, Connecticut Building Permit Guide

In the Town of New Canaan, the Building Department issues building, electrical, plumbing, HVAC, roofing, solar, tank and demolition permits, about 1,700 a year, through the Town’s OpenGov portal. The Town Code sets building fees at $50 for the first $1,000 of project value and $10 for each further $1,000, and since November 2025 projects that add sewer flow also pay a one-time impact fee with the building permit.

The department is on the lower level of Town Hall, 77 Main Street, open Monday to Thursday from 7:30 a.m. to 3:30 p.m. and Friday until 1:30 p.m., under Chief Building Official Scott Becker. New Canaan has about 21,200 residents (Census estimate for 2025), its own Health Department for wells and septic systems, and an Inland Wetlands office that also acts as floodplain manager.

Darien, Norwalk, Stamford and Wilton border New Canaan and issue their own permits; the Town’s department covers all of New Canaan.

What requires a building permit in New Canaan?

The department says that if remodeling is governed by the code, a permit is needed to erect, change or alter it; only items the code itself exempts, such as paint, wallpaper, ceramic tile and cabinet replacement, go without one. The portal’s own guidance names finished basements and attics, new bathrooms, a room turned into a bedroom, pools, garages, accessory buildings and larger decks as building permit work.

What the town decides and what the state holds

New Canaan has no building code of its own; the department enforces the state code. Chapter 9 of the Town Code adds local rules on top: the fee schedule, carbon monoxide detectors whenever a permit covers a new home, a home addition or alteration or a fuel-burning appliance, generator spacing of at least 5 feet from a home and 10 feet from any opening, flood elevation, and a ban on permits for lots on unaccepted streets except in listed cases. Under chapter 2 the Board of Selectmen sets the building, zoning and wetlands fees and reviews them each year by July 1.

Connecticut has one State Building Code: the code itself sets which work needs a permit and which is exempt, every town’s building official is licensed by the State Building Inspector, and there is no county government. Connecticut rules

New Canaan building department: who handles permitting

The Building Department does the plan review and inspections and issues certificates of occupancy. Planning and Zoning reviews the zoning side of each building application, the Inland Wetlands office handles wetlands, watercourses and the floodplain, the Health Department signs off on septic and well lots and pools, and the Fire Marshal reviews commercial plans. All of these offices are in Town Hall and share the same hours.

Permit types

Residential permits

The OpenGov portal splits work into a Building Permit Application for projects that build, enlarge or alter a property, and stand-alone permits for everything else. Roofing, generators, fuel tanks and solar always go on their own applications. A General Building Permit covers small jobs: kitchens, bathrooms and other non-structural interior work with no change in room use or count, at most one beam with posts on stamped engineered drawings, siding, direct window replacement and decks rebuilt to the exact size and stair location; basements and attics are excluded. A generator or tank first needs the Generator and/or Fuel Tank Location form, and the tank permit is issued only once the location is approved.

Any owner or authorized agent may apply, with written authorization from the owner. The portal posts the forms most jobs need: workers’ compensation forms 7A, 7B and 7C, the property owner’s affidavit, a letter of authorization, a contractor concrete form, a combustion air calculation and a garbage grinder form. Changes to an issued permit go on the Building Application Revision Form.

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

Commercial permits

Commercial projects use the same Building Permit Application. The Fire Marshal reviews plans for new construction, alterations and additions in mercantile, business, assembly, educational and residential occupancies, multifamily buildings among them, then makes progress inspections; fire alarm, sprinkler and hood systems need a separate Fire Protection permit. Non-residential zoning fees are charged by floor area.

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

What comes before the building permit

Zoning review is built into the building application, and P&Z asks for a separate Filling, Excavation and/or Grading Permit Application for any land disturbance. For wetlands, send the Inland Wetlands staff a description with plans, surveys and photos; if an application is needed, you get a checklist and file in OpenGov, plus one paper copy for Commission reviews. On a septic lot the Health Department needs a code-complying septic area before any construction permit, which means witnessed soil tests and an approved plan if the system is not already code-compliant (most built after 1998 are); a pool needs that reserve area approved before the building application.

New Canaan permit costs and fees

Section 9-5 of the Town Code, last amended in 2005, charges $50 for the first $1,000 of project value and $10 for each further $1,000 or part of it, with the same rates for a stand-alone trade permit. The Board of Selectmen sets these amounts and reviews them yearly under chapter 2, and the codified text on eCode360 runs to May 2023, so the department’s invoice is the final word. Section 9-5 does not mention the state education fee of 26 cents per $1,000.

After-the-fact zoning permits cost triple, and wetlands corrective action permits for unpermitted work also triple the regulated activity fee. P&Z charges no zoning fee for minor interior work such as replacing kitchen cabinets or fixtures, at staff’s discretion.

Trade permits and who may pull them

Electrical, low-voltage, plumbing, HVAC, fuel tank, roof and solar permits are separate record types in OpenGov, and a trade contractor working on a larger project tags its permit onto the building permit. Fire alarm, sprinkler and hood work is filed as a Fire Protection permit.

The Department of Consumer Protection licenses the trades and registers home improvement and new home construction contractors; the Building Department page links to it.

How to apply for a New Canaan building permit

Review, corrections and what causes delay

Each land use office applies its own rules, and the department says every office with jurisdiction must be satisfied before a permit or certificate of occupancy is issued; where rules truly conflict, the stricter one prevails. On a septic lot, allow time for the septic determination, since soil tests must be witnessed by the Health Department. Connecticut law requires a decision on a building permit within 30 days of the date of application, and allows filing in person, by mail or by email as the building official prescribes; New Canaan takes applications in OpenGov, so call the department if the portal does not work for you.

Demolition of a structure more than 50 years old and 500 sq ft or larger follows chapter 12A: a newspaper notice, a posted sign, certified letters to the New Canaan Historical Society and the Historic District Commission, and a sworn statement within 14 days of publication. A pertinent objection within 15 days goes to the Historical Review Committee, and if it finds the building significant the permit waits until 90 days after the application was filed. Owners can ask the committee in advance whether a building is significant; that ruling lasts three years.

Inspections in New Canaan

The department posts each day’s inspection schedule online, listing every address with a one-hour arrival window, and you can subscribe to updates through the Town’s E-Notify service. A list of required inspections is available from the department. Permits stay valid while work keeps moving, however slowly, but a project dormant for six months in a row can have its permit expired.

The Town Code’s carbon monoxide rule asks for a detector near each sleeping room and on every level, basements included, with hard-wired, interconnected units in new homes, and the Building Official may withhold a certificate of occupancy until it is met. Work done without a permit needs an after-the-fact permit with the same review; nothing is grandfathered, and violations must be corrected before a certificate is issued.

New Canaan permit search and official resources

The Building Permits Inquiry map lets you search permits by address, and the Town’s Documents on Demand site holds scanned land use and health files. The department’s FAQ says all construction documents are public on request, including permits, applications, plans, inspection history and certificates of occupancy; title searchers email Planning and Zoning.

• New Canaan Building Department
• New Canaan Building Department FAQ
• New Canaan OpenGov Building Department applications
• New Canaan daily building inspection schedule
• New Canaan building permits inquiry map
• New Canaan Documents on Demand: land use and health files
• New Canaan applications and forms
• New Canaan Town Code, chapter 9: building fees and local rules
• New Canaan Town Code, chapter 12A: demolition delay
• New Canaan Planning and Zoning
• New Canaan Planning and Zoning fee schedule, July 1, 2026
• New Canaan Inland Wetlands and floodplain management
• New Canaan inland wetlands fee schedule, January 1, 2025
• New Canaan Health Department
• New Canaan Health Department fees, July 1, 2023
• Health Department requirements before a building permit on a septic lot
• New Canaan Fire Marshal
• FEMA Community Status Book for Connecticut
• Office of the State Building Inspector
• Connecticut Department of Consumer Protection: licenses and registrations

New Canaan building permit FAQ

How much is a building permit in New Canaan?

Section 9-5 of the Town Code charges $50 for the first $1,000 of project value and $10 for each further $1,000. Zoning, health, wetlands and sewer impact fees are separate.

What is the sewer impact fee?

A one-time charge of $10 per gallon of added estimated sewer flow, approved on November 11, 2025, paid with the building permit when a project adds flow to the Town sewer, and settled after a final assessment before the certificate of occupancy.

Do I need a separate zoning permit?

Usually not. Zoning review is part of the OpenGov building application unless staff direct otherwise, but land disturbance needs the Filling, Excavation and/or Grading application.

Can I work on my own house without a license?

Yes, if it is your single-family, owner-occupied home. You still need permits and inspections, and anyone you hire must be licensed.

How long is a permit good for?

As long as work keeps progressing. If the project sits dormant for six consecutive months, the department can expire the permit.

Can I build a pool on a septic lot?

Only after the Health Department approves a code-complying reserve septic area, shown with the well, pool, equipment pad and fencing on a survey site plan.

Is New Canaan in the National Flood Insurance Program?

Yes. FEMA lists New Canaan as a participating community with maps dated June 18, 2010, and section 9-9 of the Town Code requires the lowest floor of new homes and additions in the floodplain to be at or above the 100-year flood level.

Simplify New Canaan permitting with Alliance Permitting

Alliance Permitting is a permit documentation and submission company in Connecticut. 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 New Canaan permitting. Requirements, fees, and procedures change; confirm details with the permitting authority before relying on them.