Plumbing contractors in Corona by the numbers
Corona is home to 109 licensed plumbing contractors (C-36, CSLB September 2026) — #22 in California, about 8% of the 1,447 contractor licenses based here.
Nearby in Riverside County: Riverside (207), Murrieta (78), Temecula (78), Menifee (58).
46% of Corona's C-36 licensees hold more than one classification — most often B General Building Contractor (30%), C-20 Warm-Air Heating, Ventilating and Air-Conditioning Contractor (18%). Extra classifications can change how carriers rate your general liability and workers' comp, so list every license class when you quote.
Business structure: 30% sole owners, 65% corporations, 5% LLCs; median time licensed 10.0 years.
What carriers look at
For plumbers, underwriters focus first on: water damage from failed fittings, supply lines and water heaters; and mold claims that follow slow leaks. 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 Corona 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 Corona?
109 active C-36 licenses have a business address in Corona (CSLB, September 2026); 55% carry workers' comp and 39% 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.