Plumbing contractors in Vallejo by the numbers
Vallejo is home to 34 licensed plumbing contractors (C-36, CSLB September 2026), about 6% of the 555 contractor licenses based here.
Nearby in Solano County: Vacaville (46), Fairfield (40), Dixon (10), Benicia (8).
32% of Vallejo's C-36 licensees hold more than one classification — most often B General Building Contractor (12%), C-20 Warm-Air Heating, Ventilating and Air-Conditioning Contractor (6%). Extra classifications can change how carriers rate your general liability and workers' comp, so list every license class when you quote.
Business structure: 65% sole owners, 26% corporations, 9% LLCs; median time licensed 9.8 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 Vallejo 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 Vallejo?
34 active C-36 licenses have a business address in Vallejo (CSLB, September 2026); 32% carry workers' comp and 68% are filed exempt.
Do C-36 plumbers need workers' comp?
Yes if you have employees. With no employees you can currently file an exemption; beginning January 1, 2028, CSLB will require workers' comp for all active licenses under SB 1455, except joint ventures.