Plumbing contractors in Oceanside by the numbers
Oceanside is home to 91 licensed plumbing contractors (C-36, CSLB September 2026) — #29 in California, about 9% of the 1,031 contractor licenses based here.
Nearby in San Diego County: San Diego (488), El Cajon (130), Chula Vista (128), Escondido (122).
30% of Oceanside's C-36 licensees hold more than one classification — most often C-20 Warm-Air Heating, Ventilating and Air-Conditioning Contractor (13%), B General Building Contractor (12%). Extra classifications can change how carriers rate your general liability and workers' comp, so list every license class when you quote.
Business structure: 46% sole owners, 43% corporations, 10% LLCs; median time licensed 7.1 years.
What carriers look at
For plumbers, underwriters focus first on: mold claims that follow slow leaks; and sewer backup and drain-cleaning work. 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 Oceanside 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 Oceanside?
91 active C-36 licenses have a business address in Oceanside (CSLB, September 2026); 41% 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.