Directory / Londonderry / Plumbing
Nelson Gagnon
3 permits across 2 towns in the last 6 months
Plumbing · Gas fitting
Business contact from Town of Londonderry eSuite permit detail, checked Sep 18, 2026. Not from permit records.
Activity by month
Permits filed each month. The first and last months are partial.
Where they’re working
Permits filed under this contractor by state and town, last 6 months.
New Hampshire 3
Types of projects
By place, trade and period
| Town / city | State | Trade | Last 90 days | Last 6 months | All documented |
|---|---|---|---|---|---|
| Londonderry | NH | Plumbing | 1 | 1 | 1 |
| Londonderry | NH | Gas fitting | 1 | 1 | 1 |
| Merrimack | NH | Plumbing | 0 | 1 | 1 |
Permit timeline
- Sep 18, 2026Remove existing boiler and replace with NavienLondonderry · Plumbing · Plumbing Permit - online · Permit Issued on 09/24/2026 · #2026-00000062
- Sep 18, 2026Remove old boiler and replace with navienLondonderry · Gas fitting · Mechanical/Gas Permit- NOT OIL - online · Permit Issued on 09/24/2026 · #2026-00000198
- Aug 5, 2026Replace 4" backflow IN SPRINKLER ROOM BUILING # 2Merrimack · Plumbing · Plumbing · 1 · #PP-26-187
Permit counts reflect permits filed in public town records naming this contractor as applicant. A permit shows permitted activity, not necessarily completed work, quality of work, or a final inspection.
License
We haven’t verified a state license for this name yet. We only show license details when we can match the record to this contractor with confidence. You can check directly at the New Hampshire Office of Professional Licensure and Certification (OPLC) license lookup.
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Sources
- Londonderry NH eSuite.Permits public search · retrieved Nov 13, 2026
- Merrimack OpenGov portal · retrieved Nov 13, 2026
Not verified: contact info, business address, insurance, reviews. Page built Nov 13, 2026.