California Contractor Insurance
Asena Capital Insurance Services — California-licensed insurance brokerage serving contractors statewide. Phone: (858) 925-9555. Email: info@asenainsurance.com.
Santa Rosa is home to 142 licensed plumbing contractors (C-36, CSLB September 2026) — #11 in California, about 7% of the 2,058 contractor licenses based here.
Nearby in Sonoma County: Petaluma (50), Rohnert Park (32), Sebastopol (27), Sonoma (24).
34% of Santa Rosa's C-36 licensees hold more than one classification — most often B General Building Contractor (16%), C-20 Warm-Air Heating, Ventilating and Air-Conditioning Contractor (13%). 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, 44% corporations, 10% LLCs; median time licensed 8.9 years.
For plumbers, underwriters focus first on: sewer backup and drain-cleaning work; and gas line work and related fire exposure. See the full coverage guide for plumbing contractors for limits, endorsements and workers' comp rules.
Asena Capital Insurance Services compares multiple markets for Santa Rosa 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.
142 active C-36 licenses have a business address in Santa Rosa (CSLB, September 2026); 61% carry workers' comp and 39% are filed exempt.
Usually under an inland marine or tools-and-equipment policy, not general liability or auto.