Public CSLB records

Black Oak Construction, B General Building Contractor in Clayton, CA

License #605964·Sole Owner·Clayton, Contra Costa County
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Summary

Black Oak Construction operating as a sole owner holds an active California contractor license (CSLB #605964), valid through Nov 30, 2026. First issued in 1990, the license has been on the CSLB roster for 36 years. It carries a single CSLB classification: B — General Building Contractor. Records show an active surety bond on file with American Contractors Indemnity Company and an exempt workers' compensation status (no employees on payroll). The business is based in Clayton, in Contra Costa County, California.

Business Information
Address
P O Box 531
Clayton, CA 94517
License Details & Classifications
License Number
605964
Issued
Nov 5, 1990
Status
CLEAR
Expires
Nov 30, 2026
Entity
Sole Owner
Financial & Insurance Coverage
Contractor Bond
Surety
American Contractors Indemnity Company
Bond Number
SC693788
Effective
Jan 1, 2023
Status
Active
Workers' Compensation
Coverage
Exempt
Carrier
Policy Number
Effective
Nov 5, 2024
Expires
Review

This contractor warrants a closer look before contracting:

  • Workers' comp listed as exempt
License StatusActive
Contractor BondOn file
Workers' CompensationActive

An automated summary of public CSLB data, not a credit score, rating, or endorsement. How we determine this

Frequently asked questions
Is Black Oak Construction licensed in California?

Yes. Black Oak Construction holds California Contractors State License Board license number 605964, which is active and in good standing. The license was first issued on November 5, 1990. It is valid through November 30, 2026.

What does Black Oak Construction specialize in?

Black Oak Construction is licensed for one CSLB classification: B General Building Contractor.

Where is Black Oak Construction headquartered?

Black Oak Construction is headquartered at P O Box 531, Clayton, CA 94517, in Contra Costa County, California.

Does Black Oak Construction have an active surety bond on file with CSLB?

Yes. Black Oak Construction has an active California contractor surety bond filed with American Contractors Indemnity Company.

Does Black Oak Construction carry workers' compensation coverage?

Black Oak Construction reports an exempt workers' compensation status, meaning the business has no employees on payroll.

How do I verify Black Oak Construction's contractor license?

You can verify Black Oak Construction's license directly with the California Contractors State License Board at https://www.cslb.ca.gov/OnlineServices/CheckLicenseII/LicenseDetail.aspx?LicNum=605964.

Activity Timeline
  1. License issuedNov 5, 1990
  2. Bond activeJan 1, 2023
  3. WC coverage startsNov 5, 2024
  4. License expiresNov 30, 2026
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California lien & payment resources

Working a California job with Black Oak Construction, or chasing an unpaid invoice? These free tools track your mechanics lien deadlines and rights under California Civil Code §§8200–8848.

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