Plumbing contractors in Hayward by the numbers
Hayward is home to 83 licensed plumbing contractors (C-36, CSLB September 2026) — #35 in California, about 7% of the 1,119 contractor licenses based here.
Nearby in Alameda County: Oakland (125), Livermore (60), San Leandro (55), Fremont (34).
40% of Hayward's C-36 licensees hold more than one classification — most often B General Building Contractor (23%), C-10 Electrical 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: 43% sole owners, 52% corporations, 2% LLCs; median time licensed 6.8 years.
What carriers look at
For plumbers, underwriters focus first on: trenching near utilities; and service vans with tools, parts and drain equipment. 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 Hayward 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 Hayward?
83 active C-36 licenses have a business address in Hayward (CSLB, September 2026); 53% carry workers' comp and 45% 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.