Manchester NH Building Permits: What Homeowners Should Know
Permits in Manchester, NH go through the Building Division, part of the city's Planning and Community Development department. Code administration is theirs. So are plan review, permit approval and the field inspections. Applications come in five kinds: Building, Electrical, Heating, Plumbing and Demolition. Does your job need one? Only the city can really say. Call (603) 624-6450, or email pcd@manchesternh.gov with a couple of lines about the work, and you'll usually have your answer fastest that way.
What the Building Division does
The city describes the Building Division's job as building code administration, including building plan review and permit approval, plus field inspections. In practice that means two moments where the city looks at your project: once on paper before work starts, and again in person while it is underway or when it is finished. On a bigger job there can be several inspections, for example before walls are closed up and again at the end, so ask the city which ones apply to yours and who books them.
Plan review is where the city checks what you intend to build against the code. Inspections are where someone confirms that what got built matches what was approved. Skipping the first usually makes the second harder, and sometimes means opening up finished walls so an inspector can see the framing or wiring that should have been checked earlier.
Permits also leave a paper trail. When you sell the house, a buyer's inspector or lender may ask whether a finished basement, a new deck or a moved wall was done with a permit. Having the approved permit and the passed inspection on file is a lot easier than explaining why they are missing, or paying to open things back up so they can be inspected late.
The five permit types
Manchester's permit applications page lists five categories: Building, Electrical, Heating, Plumbing and Demolition. A single project can touch more than one. Opening a wall between two rooms, for example, can involve new framing and a header, moving an outlet or two, and rerouting a heating line or a radiator pipe that happens to run through it.
Each category has its own application. The city posts them on its Permit Applications page, and that page is the one to trust over any summary, including this one. Forms, fees and requirements change, and the city is the only source that is always current. Some applications ask for drawings, a plot plan or product details for windows and doors, so gather what you have before you start filling in boxes.
Ask your contractor which of these they expect your job to need, and compare that with what the city tells you. If the two answers differ, the city's answer wins. A contractor who is comfortable with permits will not mind you checking, and will often suggest it. One who tells you permits are "not worth the hassle" is asking you to carry the risk if an inspector, an insurer or a buyer asks about the work later.
Decks and porches need construction details
The city asks for construction details on permits to build, repair or replace a deck or porch, using a Deck Details form. That form is where footings, framing, how the deck attaches to the house, guards and stairs get described before anything goes in the ground. In New Hampshire, footings also have to deal with frost, which heaves anything set too shallow, so the city will want to know how deep they go.
A deck looks simple from the yard. It is also a structure people stand on, often high enough off the ground that a failure hurts somebody. The connection to the house and the stairs are where problems tend to show up years later, which is why the city wants to see the plan first.
If your contractor is drawing up a deck, ask for a copy of what went on the form and keep it with your house papers. If you are replacing an old porch on an older Manchester house, mention that too. Repairs and replacements are named on the city's page alongside new builds.
Electrical work and the Master electrician rule
Manchester's Building page states that all multi-family dwellings, non owner-occupied single family dwellings and commercial projects require a licensed NH Master electrician. A lot of Manchester's housing is multi-family, from two-families to larger older buildings, so this rule reaches further than many owners expect. Landlords trip on it all the time. That bathroom fan? The new kitchen circuit, the three outlets in the basement unit? Still electrical work, still in a multi-family building.
Own a two-family? A triple-decker, or a single-family you rent out? Then the electrical part of your renovation needs a licensed Master electrician. A general contractor can schedule around that work and build the rest. The electrical permit and the wiring, though, are the licensed electrician's.
If you live in your own single-family house, it may go differently. Don't assume. Ask the city about your address and your setup, and try to get what they say in writing. Plumbing and gas work, same deal. New Hampshire licenses plumbers and gas fitters as well. The city keeps a separate permit application for each one.
The code behind it, and how to confirm your project
On July 1, 2026, New Hampshire's 2024 International Code Council codes took effect, the International Residential Code among them. The energy code stayed on its 2018 edition. The state building code is administered through the State Fire Marshal's office and the Building Code Review Board. Manchester enforces it locally, so the IRC is the rulebook your framing, stairs, doors and windows get measured against at inspection.
What needs a permit and what does not is the city's call. So write to the Building Division before anyone starts. Give them the address and what you're planning. Say if you live there. A rough idea of size helps too, and so does a phone snapshot or a sketch on scrap paper. Save the reply. It is worth more than any contractor's guess, ours included.
For framing, door or window work in the Manchester area, call Crimson Maple Construction at (603) 722-3344, or message us a photo — we’ll get you a number. Tell us what the city told you, and we can plan the job around it.
Questions people actually ask
- How do I contact the Manchester NH Building Division?
The Building Division sits in the city's Planning and Community Development department. The phone number listed on the city's site is (603) 624-6450 and the email is pcd@manchesternh.gov. Permit applications for Building, Electrical, Heating, Plumbing and Demolition are posted on the city's Permit Applications page. Check that page for current forms before you file anything.
- Do I need a permit to build a deck in Manchester NH?
Manchester asks for construction details on permits to build, repair or replace a deck or porch, using its Deck Details form. That tells you the city treats deck work as permit work, but confirm your own project with the Building Division before starting. Describe the size, height and whether it attaches to the house, and ask what they need from you.
- Who can do electrical work in a Manchester rental property?
The city's Building page says all multi-family dwellings, non owner-occupied single family dwellings and commercial projects require a licensed NH Master electrician. Rent out a single-family? Own a two-family or a triple-decker? You'll need a licensed Master electrician for the wiring part of the renovation. Yes, even with a general contractor running the rest.
- What building code does New Hampshire use?
The 2024 International Codes, since July 1, 2026. That includes the International Residential Code. One exception: the state kept the 2018 International Energy Conservation Code. Two bodies look after the state code, the State Fire Marshal's office and the Building Code Review Board. Manchester and other cities do the local enforcing, through plan review and inspections. Some local amendments can apply, so ask your building department.
Before hiring anyone for this kind of work, it is worth reading what New Hampshire does and does not license and how a written quote should read. About Crimson Maple Construction covers who would be doing the work.
The work this guide is about
- FramingFraming in Manchester, NH: new walls, wider openings, basement rooms and new builds, and the NH building code behind them. Foundations and concrete by others.
- DoorsInterior, French, closet and entry door installation in Manchester, NH: slab or pre-hung, old frames, old paint, and what to send for a free quote.
- WindowsWindow replacement in Manchester, NH: insert vs full-frame, old sash and lead paint in pre-1978 homes, energy ratings, rebates and what to send for a quote.
The other guides
- Hiring a Contractor in New Hampshire: What to Check Before You SignNH doesn't license general contractors. So "are you licensed?" gets you nowhere. Ask these four things instead.
- Lead Paint in Older New Hampshire Homes: Renovating SafelyBuilt before 1978? Then sanding, scraping and old windows come with federal rules. Here's what to ask first.
- Ice Dams and Roof Snow in New Hampshire: Causes and FixesSame roof, same icicles, every February. Why it keeps happening, what to do with the snow today, and the actual fix.
- LVP, Tile or Hardwood: Choosing Floors for a New Hampshire HomeBasement, bathroom, mudroom. Slush and salt on the way in. Which floor survives where, and why the subfloor matters.
- Drywall Repair or Replace: How to Decide in an Older HomePatch it or re-sheet it? Plus what's different when the wall turns out to be 1900s plaster and lath.
Manchester, NH
Tell us what the house needs
Call and describe the job. If it is on the service list, ask how it would go. Foundation work and concrete pads are not on it.