Hiring for plumbing work in Los Angeles? Start with the facts that are specific to Los Angeles and California: who licenses the work, how to check a license, where permits come from, and what the local market looks like. Every figure below links to its official source.
Before you hire in Los Angeles: a checklist
- Look the plumber up in the official California license lookup and make sure the name and license number match the contract.
- Know the threshold: License required when labor, materials, and all other costs total $1,000 or more, or when the job requires a permit or the person hires workers (effective January 1, 2025).
- Ask for proof of the insurance or bond California requires (listed below) and current workers' compensation coverage.
- Confirm who will pull the permit with City of Los Angeles Department of Building and Safety (LADBS) and that final inspection is included in the price.
- Get at least three written quotes for the same scope; our plumbing guide covers typical costs, questions to ask and red flags.
Plumbing licensing in California
California licenses plumbing contractors through the CSLB under the C-36 (Plumbing) classification. Since January 1, 2025, a license in the appropriate classification is required for jobs of $1,000 or more, and for smaller jobs that need a building permit or use hired workers.
| Who licenses it | Contractors State License Board (CSLB) |
|---|---|
| When a license is required | License required when labor, materials, and all other costs total $1,000 or more, or when the job requires a permit or the person hires workers (effective January 1, 2025) |
| Insurance / bond | $25,000 contractor's bond required to issue, reactivate, or renew an active license |
| Check a license | Official license lookup (cslb.ca.gov) |
Source: cslb.ca.gov, checked November 15, 2026. Rules change; confirm with the agency before you sign a contract.
Building permits in Los Angeles
Residential building permits for Los Angeles are issued by City of Los Angeles Department of Building and Safety (LADBS). Permits are commonly required for water heaters, gas lines and repiping. Ask your contractor who will pull the permit and book the inspections; a contractor who asks you to pull it yourself is a warning sign.
Official permit office page, checked November 15, 2026.
Los Angeles's plumbing market: firms and pay
Census County Business Patterns counted 2,765 business locations with paid employees in Los Angeles County in 2023 in the industry βplumbing, heating and air-conditioning contractors,β employing 24,014 people. The median annual wage for plumbers, pipefitters and steamfitters in the Los Angeles-Long Beach-Anaheim, CA metro area was $71,110 (May 2025), higher than in most of the 108 metro areas we cover. Local pay levels feed directly into labor rates on quotes.
| Business locations (plumbing, heating and air-conditioning contractors) in Los Angeles County | 2,765 |
|---|---|
| People employed at those locations | 24,014 |
| Share with fewer than 10 employees | 83% |
| Average annual payroll per employee | $77,500 |
| Median annual wage, plumbers, pipefitters and steamfitters, Los Angeles-Long Beach-Anaheim, CA metro area | $71,110 |
Census counts plumbing and HVAC contractors together in one industry. Sources: U.S. Census Bureau, County Business Patterns 2023 (NAICS 238220; employer establishments only, so self-employed one-person businesses are not counted); BLS Occupational Employment and Wage Statistics, May 2025 (SOC 47-2152). Checked November 15, 2026.
Seasonal notes for California
Milder weather in California means fewer freeze-related breaks, but older homes may still have aging galvanized or polybutylene pipe worth having inspected.
Other trades in Los Angeles
More Los Angeles guides
Plumbing in other cities
AllCityPros is an independent information resource. We do not endorse, rate or vouch for any business, and nothing here is legal or professional advice. Licensing rules change; confirm requirements with the licensing agency before you sign a contract. Business counts and wages are official statistics for the county or metro area, not counts of businesses available to you.