Check your project
Tick the work you are planning and the checker sorts it into finish work, work that usually needs a permit and a licensed trade, and work to ask the building office about. It uses the language of the state code and of the town pages we read. It is general information and not legal advice.
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The short version
| Usually finish work | Usually needs a permit and a licensed trade | Ask the building office |
|---|---|---|
| Painting, wallpaper, wall tile | Moving or adding outlets and circuits, or wiring for new lights | Replacing cabinets, depending on the layout |
| Flooring | Moving the sink, the dishwasher or any water or drain line | Replacing a faucet or sink in the same place |
| Replacing countertops, with no plumbing change | Running or moving a gas line | Replacing a range or cooktop, same fuel |
| Backsplash tile | A new range hood with ducting to the outside | Replacing windows or doors |
| Removing, opening or moving a wall | Swapping light fixtures in the same places |
What the state building code says
Connecticut’s State Building Code, which for houses follows the International Residential Code, lists work that needs no permit. Among it is finish work such as painting, papering, tiling, carpeting, cabinets and countertops, as long as no structural change is involved. The same exemption adds that it does not authorize any work that breaks the code or other laws.
The plumbing exemption is narrow. It covers clearing stoppages and repairing leaks that do not require replacing or rearranging valves, pipes or fixtures. Moving a sink, adding a line or swapping fixtures goes beyond it. The town pages below list new or moved wiring, new plumbing lines, gas lines and ventilation work as permit work, so treat any of those as needing a permit unless the building office tells you otherwise.
What the towns say
Each town runs its own building department. These are the permit statements we found on official pages, with a link to each local page. Portals and forms change, so confirm with the office before you rely on a detail.
| Town | What its official page says | Local page |
|---|---|---|
| New Haven | The city’s permit application form has boxes for taxes paid, plans and a workers’ compensation certificate or an owner or sole proprietor affidavit. | New Haven neighborhoods |
| East Haven | Permits for interior renovations or alterations, plumbing supply, drain, waste and vent lines, moving electrical wires, and heating or air conditioning equipment. No permit for painting, wallpapering, flooring, cabinets, counters and electrical fixtures. Applications go through Permitlink. | East Haven |
| North Haven | Permits for additions, renovations and alterations, plumbing, electrical, heating, ventilation and hood work, and gas lines. The list is not exhaustive. Taxes and fees must be paid before a building permit is issued. | North Haven |
| Woodbridge | Permits for plumbing systems and new fixtures, electrical alterations, and changing, replacing or removing walls, columns and beams. A completed tax status form is required with a building, electrical or plumbing application, and permits are applied for online. | Woodbridge |
| Branford | For an interior renovation the town lists a building permit application, one set of construction drawings, a flood hazard application if the parcel is in a FEMA flood hazard area, health district approval if the home has a private well or septic system, and proof of workers’ compensation insurance or a state waiver. | Branford |
| West Haven | Applications go through the online portal since January 1, 2026. The building official has up to 30 days to review once the information is complete. | West Haven |
| Orange | A completed tax status form is required before the building department approves an application. Permits are applied for online. | Orange |
| Milford | The city’s Department of Permitting and Land Use reviews construction, and the city publishes guidance for building in its flood zones. | Milford |
| Hamden | The town code has a building code chapter. We could not confirm a current official permit page, so check the town website or call the building department. | Hamden |
Who pulls the permit
Connecticut’s Department of Consumer Protection tells homeowners that both parties must agree on who pulls the building permit. Put the answer in the written contract. If the contractor pulls it, ask for a copy of the permit before work starts, and ask for the inspection sign-offs at the end. See what the contract must say.
Historic districts and the shore
New Haven has local historic districts, including Wooster Square, Quinnipiac River and City Point, where the Historic District Commission reviews exterior architectural changes. A new vent, window or door changes the exterior, so ask the commission before you order anything. The city’s interactive map shows the district boundaries and the FEMA flood hazard layer, so check both for your address. See older house kitchens.
Houses built before 1978
Anyone paid to disturb painted surfaces in a home built before 1978 must be EPA lead-safe certified, and that applies to firms and sole proprietors. It generally does not apply to homeowners working on their own home. Ask your remodeler for the certification.
Common questions
What happens if I skip a permit that was required?
It varies by town. A town can require you to correct or open up unpermitted work, and unpermitted work can come up when you sell the house or file an insurance claim. Ask your building office what it requires.
Does the contractor pull the permit?
The contract must say. Connecticut’s Department of Consumer Protection tells homeowners that both parties have to agree who does it, so do not leave it unwritten.
How long does a permit take?
It depends on the town and on how complete your application is. West Haven’s instructions give the building official up to 30 days to review once the information is complete. Ask your own town.
Do I need a permit to replace countertops?
Countertops are named with cabinets and tile as finish work in the state code, so usually not, unless the job also moves plumbing or wiring.