B compliance in San Mateo — CSLB data
CSLB's license file (September 2026) lists 315 active B licenses based in San Mateo. 40% show a workers' comp policy and 58% are filed exempt.
17 of them are suspended (2 workers' comp / 15 bond) — a suspended license cannot legally contract.
Across San Mateo County the count is 2,397, and 106 are suspended for coverage or bond lapses.
43% of San Mateo's B licenses are 20+ years old, 18% are newer than three years (median 17.3 years). 26 were issued in the last 12 months.
5% are LLCs, which carry extra CSLB insurance and bond rules (below).
What CSLB requires for a B license
- License bond: $25,000 on file with CSLB.
- Workers' comp: required with employees; mandatory for all active licenses from January 1, 2028 (SB 1455).
- LLC licenses: $1M+ liability insurance and a $100,000 employee/worker bond.
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Frequently asked questions
How many B licenses in San Mateo are suspended?
As of September 2026, 2 for workers' comp and 15 for bond issues, out of 315 active B licenses based in San Mateo.
How many new B licenses were issued in San Mateo last year?
26 in the 12 months to September 2026. Each needed a $25,000 bond on file before CSLB issued the license.
Do general contractors need workers' comp with no employees?
Today a B license with no employees can file an exemption. Beginning January 1, 2028 (SB 1455), CSLB will require workers' comp for all active licenses, except joint ventures.