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CSLB license data

Plumbing Contractors in Santa Clara County: CSLB C-36 License Statistics

Short answer

Santa Clara County has 672 current C-36 plumbing contractor licenses, 3.7% of California's total and the 6th-largest county count in the state. 358 (53.3%) have a workers' compensation policy on file and 295 (43.9%) are exempt. 26 licenses (3.9%) are suspended. San Jose accounts for 393 licenses, the most of any city in the county.

Active C-36 licenses6723.7% of California
WC policy on file53.3%state 46.1%
WC exempt43.9%state 51.2%
Suspended3.9%26 licenses · state 4.1%
Issued in last 12 months537.9% of county licenses
Median license age12.3 yrsstate 13.5 yrs

How Santa Clara County compares

  • The share of licenses with a workers' comp policy on file is well above the state average: 53.3% here against 46.1% statewide, a gap of 7.2 points.
  • The suspension rate is in line with the state average (3.9% here, 4.1% statewide).
  • The share of sole-owner licenses is slightly below the state average: 43.6% here against 45.8% statewide (2.2 points lower).
  • The share organized as LLCs is in line with the state average (5.5% here, 5.5% statewide).
  • The share that also hold a B general building license is slightly above the state average: 24.7% here against 23.3% statewide (1.4 points higher).
  • The share of licenses under three years old is slightly above the state average: 19.5% here against 18.1% statewide (1.3 points higher).

Workers' compensation coverage

Coverage typeSanta Clara CountyShareCalifornia
Policy on file35853.3%46.1%
Exempt (certifies no employees)29543.9%51.2%
No current WC record121.8%1.3%
Leasing firm / temp agency60.9%1.3%
Self-insured10.1%0.1%
Out-of-state coverage00.0%0.0%

295 licenses in Santa Clara County certify having no employees. SB 1455 moved the date on which every licensed contractor must carry workers' comp, employees or not, to January 1, 2028; until then the exemption stands, but it becomes invalid on the first hire and CSLB must receive proof of coverage within 90 days. 17 county licenses currently show a workers' comp suspension pending. Workers' comp for plumbing companies →

Suspensions

CauseSanta Clara CountyShare of suspendedCalifornia share
Bond lapsed (contractor's, LLC, qualifying individual, disciplinary)1246.2%63.7%
Workers' compensation934.6%21.0%
Liability insurance (LLC)27.7%5.7%
Other311.5%9.6%

16 Santa Clara County licenses have a bond cancellation already dated on file; unless a replacement bond reaches CSLB before the cancellation takes effect, each becomes a suspension. Contractor bonds → · Check a license →

Business structure

Entity typeSanta Clara CountyShareCalifornia
Sole owner29343.6%45.8%
Corporation33950.4%47.5%
Limited liability company375.5%5.5%
Partnership30.4%1.1%
Joint venture or other00.0%0.1%

37 county licenses are LLCs, 37 of which have the $100,000 LLC employee/worker bond on file. 166 licenses (24.7%) also hold a B general building classification and 93 hold C-20 HVAC.

Licenses by city

CityC-36 licensesShare of county
San Jose39358.5%
Santa Clara517.6%
Gilroy507.4%
Sunnyvale314.6%
Campbell284.2%
Morgan Hill253.7%
Milpitas192.8%
Mountain View142.1%

New licenses and renewals

152015 152016 132017 262018 342019 242020 242021 302022 232023 432024 382025 482026

53 licenses were issued in the county in the last twelve months; 19.5% of all county licenses are under three years old. 308 licenses come up for renewal in the next twelve months, peaking in Mar 2027.

What this means if you hold a C-36 in Santa Clara County

The same rules apply in every county, but the figures above show where Santa Clara County contractors most often run into them: bond lapses are the leading cause of suspension here, as they are statewide, and a lower-than-average share of exempt licenses means most local plumbing companies already carry workers' comp. Coverage pages: workers' compensation, general liability, commercial auto, contractor bonds.

Quote your Santa Clara County plumbing business

One application for workers' comp, general liability, commercial auto and bonds, reviewed by a licensed producer.

About the author

Casey Sullivan is a licensed insurance producer with Pembroke Insurance Solutions (California license #6011028), the agency behind Plumbers Pro. He writes and reviews every guide and FAQ answer on this site; this page was last reviewed on October 24, 2026. Corrections and questions: [email protected].

Statistics are computed from public CSLB records (see the methodology) and are general information, not advice about any licensee or policy. Insurance is offered through Pembroke Insurance Solutions, a licensed insurance agency.