Hvac contractors in South San Francisco by the numbers
South San Francisco is home to 16 licensed HVAC contractors (C-20, CSLB September 2026), about 4% of the 401 contractor licenses based here.
Nearby in San Mateo County: Redwood City (27), San Mateo (20), San Carlos (12), Burlingame (10).
56% of South San Francisco's C-20 licensees hold more than one classification — most often C-36 Plumbing Contractor (44%), C-10 Electrical Contractor (25%). Extra classifications can change how carriers rate your general liability and workers' comp, so list every license class when you quote.
Business structure: 19% sole owners, 81% corporations, 0% LLCs; median time licensed 21.8 years.
What carriers look at
For HVAC contractors, underwriters focus first on: theft of equipment, copper and tools from vans and job sites; and service vans driven daily across a wide territory. See the full coverage guide for HVAC contractors for limits, endorsements and workers' comp rules.
Get a quote
Asena Capital Insurance Services compares multiple markets for South San Francisco 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 HVAC contractors are in South San Francisco?
16 active C-20 licenses have a business address in South San Francisco (CSLB, September 2026); 100% carry workers' comp and 0% are filed exempt.
Can a C-20 HVAC contractor stay exempt from workers' comp?
No. Since January 1, 2023, every active C-20 license must have a current workers' comp policy on file with CSLB, with or without employees.