California D-35 Pool and Spa Maintenance License: Scope, Verification, and When Your Pool Service Needs One

The D-35 limited specialty (under the C-61 classification) covers servicing and repairing existing pools and spas: motors, pumps, filters, gas heaters, above-ground piping, pool lights, and vinyl liners — the equipment that keeps a pool running.

It does not authorize building a new pool, spa, or hot tub. New construction and major structural remodels are C-53. The two are paired but distinct.

It depends on the work. Routine cleaning, water testing, and chemical balancing under the $1,000 threshold may need no contractor's license at all. But repairing or replacing equipment — a pump, a filter, a gas heater — is contracting work, and at $1,000 or more in combined labor and materials it requires a license (the C-61/D-35, or a broader pool classification).

A Certified Pool Operator (CPO) credential signals training in pool operation, but it is not a CSLB license and does not authorize contracting. For equipment repair, verify the CSLB license.

Any project where combined labor and materials total $1,000 or more must be performed by a CSLB-licensed contractor — the threshold rose from $500 to $1,000 on January 1, 2025 under Assembly Bill 2622 (Business & Professions Code §7048). Below $1,000, a narrow minor-work exemption can apply only if the job isn't part of a larger project and the worker discloses, in advertising and bids, that they aren't licensed.

So a weekly cleaning service may legitimately operate without a contractor's license, while the company that replaces your pump at a $1,400 cost should hold an Active C-61/D-35 (or broader pool classification).

For equipment repair, confirm the license is Active and the C-61/D-35 (or a broader pool) classification is listed — on the CSLB "Check a License" tool or on the contractor's profile in this directory. Match the license to the business you're hiring. Check that the $25,000 contractor bond is on file (Business & Professions Code §7071.6) and that workers' compensation coverage — or a valid exemption — is shown.

Browse California pool and spa maintenance contractors and see each one's dated CSLB status before you hire.

A pool and spa maintenance contractor must carry workers' compensation insurance for any employees. A contractor that genuinely works alone can currently file a no-employee exemption, so the CSLB record may show an exemption rather than a policy — confirm one or the other before you hire.

Senate Bill 1455 will extend that requirement to every CSLB licensee — regardless of employees — on January 1, 2028, with CSLB's exemption-verification process live by January 1, 2027. Five high-risk classifications already carry no exemption at all — C-8 (concrete), C-20 (HVAC), C-22 (asbestos abatement), C-39 (roofing), and D-49 (tree service) — and must hold coverage regardless of employees.