Directory / Portsmouth / Plumbing
William Libby Sr
13 permits across 2 towns in the last 6 months
Plumbing · Gas fitting
We haven’t confirmed public business contact details for this contractor yet. You can still request a quote and we’ll pass it along once we reach them.
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 13
Types of projects
By place, trade and period
| Town / city | State | Trade | Last 90 days | Last 6 months | All documented |
|---|---|---|---|---|---|
| Portsmouth | NH | Plumbing | 2 | 4 | 4 |
| Portsmouth | NH | Gas fitting | 1 | 3 | 3 |
| Londonderry | NH | Gas fitting | 1 | 3 | 3 |
| Londonderry | NH | Plumbing | 1 | 3 | 3 |
Permit timeline
- Nov 12, 2026Install plumbing in the basement of the home for a 3/4 bathroom on a Macerating toilet system.Portsmouth · Plumbing · Plumbing · 1 · #PLMB-26-425
- Oct 21, 2026Install a pot filler and a disposalPortsmouth · Plumbing · Plumbing · 1 · #PLMB-26-392
- Oct 21, 2026Add a 1/2" gas line to the existing gas pipe system for a gas stovePortsmouth · Gas fitting · Gas · 1 · #GAS-26-133
- Sep 16, 2026Interior gas piping and water heaterLondonderry · Gas fitting · Mechanical/Gas Permit- NOT OIL - online · Permit Issued on 09/24/2026 · #2026-00000265
- Sep 16, 2026Plumbing new single family homeLondonderry · Plumbing · Plumbing Permit - online · Permit Issued on 09/24/2026 · #2026-00000080
- Aug 11, 2026Install interior gas pipeLondonderry · Gas fitting · Mechanical/Gas Permit- NOT OIL - online · Permit Issued on 08/13/2026 · #2026-00000217
- Aug 11, 2026Plumbing for a new homeLondonderry · Plumbing · Plumbing Permit - online · Permit Issued on 08/12/2026 · #2026-00000067
- Aug 11, 2026Interior gas pipingLondonderry · Gas fitting · Mechanical/Gas Permit- NOT OIL - online · Permit Issued on 08/17/2026 · #2026-00000212
- Aug 11, 2026Plumbing new single family homeLondonderry · Plumbing · Plumbing Permit - online · Permit Issued on 08/12/2026 · #2026-00000065
- Jul 14, 2026Add a gas line for a gas rangePortsmouth · Gas fitting · Gas · 1 · #GAS-26-81
- Jul 6, 2026Install a 1" vacuum breaker for lawn irrigationPortsmouth · Plumbing · Plumbing · Complete · #PLMB-26-244
- Jul 6, 2026Install interior gas piping for a furnace-fireplace-range and rinnai water heater. We will install the rinnai water heatPortsmouth · Gas fitting · Gas · 1 · #GAS-26-79
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.
Is this your business?
Claim this profile for free to correct details and share it. Upgrade for $9/mo to add photos, a description and an enhanced contact form. Your phone number and quote button stay free. Your permit activity is shown the same way either way.
Sources
- Londonderry NH eSuite.Permits public search · retrieved Nov 13, 2026
- Portsmouth OpenGov portal · retrieved Nov 13, 2026
Not verified: contact info, business address, insurance, reviews. Page built Nov 13, 2026.