Public CSLB records

Cook William Sheldon, B General Building Contractor in Oakley, CA

License #526144·Sole Owner·Oakley, Contra Costa County
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Summary

Cook William Sheldon operating as a sole owner holds an active California contractor license (CSLB #526144), valid through May 31, 2028. First issued in 1988, the license has been on the CSLB roster for 38 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 Oakley, in Contra Costa County, California.

Business Information
Address
1070 Vineyard Drive
Oakley, CA 94561
License Details & Classifications
License Number
526144
Issued
Mar 8, 1988
Status
CLEAR
Expires
May 31, 2028
Entity
Sole Owner
Financial & Insurance Coverage
Contractor Bond
Surety
American Contractors Indemnity Company
Bond Number
SC6060960
Effective
Jan 1, 2023
Status
Active
Workers' Compensation
Coverage
Exempt
Carrier
Policy Number
Effective
Apr 12, 2026
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 Cook William Sheldon licensed in California?

Yes. Cook William Sheldon holds California Contractors State License Board license number 526144, which is active and in good standing. The license was first issued on March 8, 1988. It is valid through May 31, 2028.

What does Cook William Sheldon specialize in?

Cook William Sheldon is licensed for one CSLB classification: B General Building Contractor.

Where is Cook William Sheldon headquartered?

Cook William Sheldon is headquartered at 1070 Vineyard Drive, Oakley, CA 94561, in Contra Costa County, California.

Does Cook William Sheldon have an active surety bond on file with CSLB?

Yes. Cook William Sheldon has an active California contractor surety bond filed with American Contractors Indemnity Company.

Does Cook William Sheldon carry workers' compensation coverage?

Cook William Sheldon reports an exempt workers' compensation status, meaning the business has no employees on payroll.

How do I verify Cook William Sheldon's contractor license?

You can verify Cook William Sheldon's license directly with the California Contractors State License Board at https://www.cslb.ca.gov/OnlineServices/CheckLicenseII/LicenseDetail.aspx?LicNum=526144.

Activity Timeline
  1. License issuedMar 8, 1988
  2. Bond activeJan 1, 2023
  3. WC coverage startsApr 12, 2026
  4. License expiresMay 31, 2028
Other contractors in Contra Costa County
California lien & payment resources

Working a California job with Cook William Sheldon, 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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