Plumbing contractors in Los Angeles by the numbers
Los Angeles is home to 651 licensed plumbing contractors (C-36, CSLB September 2026) — #1 in California, about 10% of the 6,533 contractor licenses based here.
Nearby in Los Angeles County: Glendale (157), Long Beach (151), Van Nuys (136), Burbank (124).
35% of Los Angeles's C-36 licensees hold more than one classification — most often B General Building Contractor (27%), C-10 Electrical Contractor (13%). Extra classifications can change how carriers rate your general liability and workers' comp, so list every license class when you quote.
Business structure: 50% sole owners, 47% corporations, 2% LLCs; median time licensed 15.0 years.
What carriers look at
For plumbers, underwriters focus first on: sewer backup and drain-cleaning work; and gas line work and related fire exposure. See the full coverage guide for plumbing contractors for limits, endorsements and workers' comp rules.
Get a quote
Asena Capital Insurance Services compares multiple markets for Los Angeles contractors and requests additional insured endorsements for you when a contract calls for them. Call (858) 925-9555 or request a quote — only your name, phone and email are required. CA License #6008596.
Frequently asked questions
How many licensed plumbing contractors are in Los Angeles?
651 active C-36 licenses have a business address in Los Angeles (CSLB, September 2026); 40% carry workers' comp and 57% are filed exempt.
Does GL cover water damage from my plumbing work?
Property damage your completed work causes is typically a completed-operations question. Some plumbing policies limit water damage or mold, so we compare that wording line by line.