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Contra Costa County, California

Licensed Trade Records in Contra Costa County, California

Illustration for home services in Contra Costa County
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Browse 4,822 verified licensed trade contractors registered across Contra Costa County, California (including Concord, Richmond, Antioch, Walnut Creek, San Ramon, Pittsburg). Every record is compiled from California Contractors State License Board (CA CSLB) public credential files under California Business and Professions Code Division 3, Chapter 9 (Contractors License Law: Class A, Class B General Building, and Class C Specialty Classifications with $25,000 Bond Requirement).

Official State Authority: California Contractors State License Board (CA CSLB) Official Registry · County Seat: Martinez

Municipalities in Contra Costa County (16)

Select a city or town in Contra Costa County to view local permit guidance and registered all trades records:

Concord 976Walnut Creek 482Richmond 476Antioch 454Brentwood 358Martinez 329Pittsburg 289Oakley 252Danville 240Pleasant Hill 233San Ramon 216Lafayette 166Pinole 120El Cerrito 96Orinda 76Hercules 59

4822 all trades records · Contra Costa County, CA

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Public Directory Quality: Official CA CSLB license records across Contra Costa County · Zero sponsored order · Never sold as a lead · How our data works →

All trades directory — Contra Costa County

4822 matching records across 16 open municipalities · 25 on this page · Contactable records first, then alphabetical.

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Shaded areas mark approximate postal or city locations, not premises or service areas. Circle sizes are illustrative, not postal boundaries. Some records share the same area. Private addresses are excluded.

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680 Home Repair.com

Official license file Contactable General contracting · Contractors State License Board

Registered address: 21001 SAN RAMON VALLEY BLVDUNIT A4309, San Ramon, CA 94583

972230 · Source dated 2026-10-18 · Service area not confirmed. · Verify on California portal →

+1 more registration for this business
  • 972230 · 21001 SAN RAMON VALLEY BLVDUNIT A4309, San Ramon, CA 94583
Call (510) 364-1214
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680 Home Repairs

Official license file Contactable General contracting · Contractors State License Board

Registered address: 21001 SAN RAMON VALLEY BLVDUNIT A4309, San Ramon, CA 94583

1092541 · Source dated 2026-10-18 · Service area not confirmed. · Verify on California portal →

+1 more registration for this business
  • 1092541 · 21001 SAN RAMON VALLEY BLVDUNIT A4309, San Ramon, CA 94583
Call (510) 364-1214
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Other Counties in California

Los Angeles CountySan Diego CountyOrange CountySanta Clara CountySan Francisco CountySacramento CountyAlameda CountyRiverside CountySan Bernardino CountySan Mateo CountyVentura CountyFresno CountyKern CountySonoma CountyStanislaus CountyMonterey CountySanta Barbara CountyButte CountyShasta CountyHumboldt County

Before the first call

  • Describe the job and ask whether it is within their scope and service area.
  • Check the credential with its issuing authority and ask what applies where the work will happen.
  • Ask about insurance, availability, who will do the work, and a written scope.
  • Ask about callout fees, labor or fixed rates, materials, cancellation and any estimate charge.
Prepare a project brief

Verification Overview & Key Takeaways: How to Check Official Credentials

HomeCrafto displays source records with different scopes, including licenses, registrations, municipal permits and community records. A source entry is not proof of qualification for your job. Before signing a work order or paying a deposit, homeowners should confirm that the contractor’s credential number is active, verify that the license classification covers the specific trade scope required for the job, and request a current Certificate of Insurance (COI) directly from the issuing insurance carrier. Independent verification protects your property and ensures compliance with local building codes.

How do you verify a contractor license number and insurance on official portals (FAQ)?

You can verify active license standing and consumer protection rules directly through official government portals, including Washington L&I Contractor Verify, the California Contractors State License Board (CSLB), the Connecticut eLicense Portal, USA.gov State Consumer Protection Offices, and FTC Home Improvement Consumer Guidance. Always confirm municipal permit requirements with your local building department before work begins.