Plumbing contractors in Downey by the numbers
Downey is home to 56 licensed plumbing contractors (C-36, CSLB September 2026), about 10% of the 541 contractor licenses based here.
Nearby in Los Angeles County: Los Angeles (651), Glendale (157), Long Beach (151), Van Nuys (136).
46% of Downey's C-36 licensees hold more than one classification — most often B General Building Contractor (39%), C-10 Electrical Contractor (16%). Extra classifications can change how carriers rate your general liability and workers' comp, so list every license class when you quote.
Business structure: 45% sole owners, 52% corporations, 2% LLCs; median time licensed 15.9 years.
What carriers look at
For plumbers, underwriters focus first on: service vans with tools, parts and drain equipment; and water damage from failed fittings, supply lines and water heaters. 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 Downey 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 Downey?
56 active C-36 licenses have a business address in Downey (CSLB, September 2026); 50% carry workers' comp and 50% 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.