Plumbing contractors in Norwalk by the numbers
Norwalk is home to 35 licensed plumbing contractors (C-36, CSLB September 2026), about 10% of the 334 contractor licenses based here.
Nearby in Los Angeles County: Los Angeles (651), Glendale (157), Long Beach (151), Van Nuys (136).
37% of Norwalk's C-36 licensees hold more than one classification — most often B General Building Contractor (23%), C-20 Warm-Air Heating, Ventilating and Air-Conditioning Contractor (20%). Extra classifications can change how carriers rate your general liability and workers' comp, so list every license class when you quote.
Business structure: 49% sole owners, 49% corporations, 3% LLCs; median time licensed 11.2 years.
What carriers look at
For plumbers, underwriters focus first on: gas line work and related fire exposure; and trenching near utilities. 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 Norwalk 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 Norwalk?
35 active C-36 licenses have a business address in Norwalk (CSLB, September 2026); 43% carry workers' comp and 57% are filed exempt.
Is my drain camera or jetter covered?
Usually under an inland marine or tools-and-equipment policy, not general liability or auto.