New Hampshire permits
Do you need a permit in New Hampshire?
New Hampshire enforces the state building code (IRC-based) with local enforcement; some small towns have minimal permitting. Electrical, plumbing, and gas are state-licensed. Shoreland and wetland rules add review near water.
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These are statewide ranges. Get your exact New Hampshire cost for your zip code and project size.
Can a homeowner pull the permit?
Yes, in most cases. Owner-occupied primary residences. Licensed trades generally required for electrical/plumbing/gas on covered work.
Where to file: Municipal building department where one exists; small towns vary. Manchester, Nashua, Portsmouth have portals. Plan review 1-3 weeks.
Permits by trade in New Hampshire
| Trade | When required | Citation | Typical fee | DIY? |
|---|---|---|---|---|
| Plumbing | In-wall work, fixtures, water heater, gas | NH plumbing/gas licensing | $60-$225 | No |
| Electrical | Circuits, panel, service, EV charger | NH electrical; NEC | $60-$225 | Conditional |
| Mechanical (HVAC) | Heating systems, ductwork, refrigerant | NH mechanical | $75-$250 | No |
| Building (structural) | Additions, structural mods, decks | NH State Building Code | $100-$700 | Yes |
| Roofing | Re-roofs, structural deck repair | Local | $75-$250 | Yes |
| Shoreland | Work near protected water bodies | NH Shoreland Water Quality Protection Act | varies | Yes |
Hover a Conditional or No entry for the homeowner rule. Always confirm with your local building department, since requirements vary by jurisdiction.
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A Project Blueprint gives you the materials list, tool inventory, New Hampshire permit steps, and a step-by-step build sequence, calibrated to your zip. Human-reviewed before delivery.