STATE LICENSE
ConditionalNew Hampshire Mechanical Licensing Board …
No New Hampshire statute licenses pool builders or pool service companies. RSA 153:36, VII expressly exempts plumbing done in connection with installing and servicing swimming pools (and water treatment systems) from the plumbing license, as long as the work meets the plumbing code and local permit requirements. Gas is different: pool heaters are domestic appliances under RSA 153:27, II, so installing or servicing a natural gas or propane pool heater requires at least a domestic appliance technician license ($176 for two years under Plc 1002.25), and gas businesses need the $275 mechanical business entity license (Mec 302.05).
Pool pumps, bonding, and lighting are electrical installations that require an OPLC-licensed electrician when done for pay (RSA 319-C:1); the state building code adopts the 2024 International Swimming Pool and Spa Code and the 2023 NEC (RSA 155-A:1, IV). Servicing chemistry needs no state credential, though applying algaecides or other pesticides for hire may fall under commercial applicator rules (see unverified).
The state sets the license floor; the county or city permit office controls filing, inspections, and local rules wherever the job site sits.
New pools, barriers, and equipment are built to the state building code, which includes the 2024 International Swimming Pool and Spa Code and 2023 NEC (RSA 155-A:1, IV); towns with an RSA 155-A:3 enforcement mechanism issue permits and inspect. Gas and plumbing rules of the Mechanical Licensing Board may be enforced by the town's building inspection department (RSA 153:35).
The local offices section below names the exact permit desk for every New Hampshire county on file.
Each row names the issuing authority, cost, timeline, citation, and status behind the requirement — verified against the official source.
Published fees from the issuing authorities, as of October 2026. Local permit fees vary by project and jurisdiction — the basis is stated where a flat number does not exist.
RSA 153:36, VII exempts pool plumbing from the plumber license, but the exemption covers plumbing only — gas fitting still needs a fuel gas license.
The 2024 International Swimming Pool and Spa Code is part of the state building code (RSA 155-A:1, IV).
Pool equipment circuits, bonding, and lighting for pay require a licensed electrician (RSA 319-C:1).
A practical sequence for a new pool service contractor in New Hampshire. Actual agency processing times are noted in the ledger above.
Each item names the issuing authority, cycle, and citation.
Statutory consequences with their citations — not estimates, not “commonly cited” guesses.
Installing or servicing gas pool heaters without a fuel gas license is unlawful practice.
Wiring pool equipment for pay without an electrician license.
Construction that violates the building code or permit conditions.
Inside city limits, the city office listed here issues the permit; the county office serves unincorporated areas. Every office links to its official page.
| County · City | Permit office | Portal |
|---|---|---|
| Hillsborough County Manchester (consolidated gov.) | City of Manchester Planning and Community Development Department — Building Regulations ↗ | — |
Every fact in this file was checked against these official sources on October 2026.
Pending verification: Whether applying algaecides or other registered pesticides to pools for hire requires a commercial applicator registration under RSA 430:33 (the Pes 302.01 category list has no pool category; not confirmed with the Division) · Operator certification or other requirements for public and semi-public pools administered by NH DES or DHHS (not reviewed) · OPLC agency pages (oplc.nh.gov) returned HTTP 403 to automated retrieval; license facts were taken from the RSA and the Plc/Elec/Mec rule text instead, and current application forms and processing times were not reviewed
General information, not legal advice. Always confirm requirements, deadlines, and forms with the issuing authority before filing or contracting.
Store licenses, permits, policies, and renewal dates in one place.