Public CSLB records

Sinclair Construction CO INC, B General Building Contractor in Concord, CA

License #750995·Corporation·Concord, Contra Costa County
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Summary

Sinclair Construction CO INC operating as a corporation holds an active California contractor license (CSLB #750995), valid through Jul 31, 2026. First issued in 1998, the license has been on the CSLB roster for 28 years. It carries 2 CSLB classifications: B General Building Contractor and C-15 Flooring and Floor Covering Contractor. Records show an active surety bond on file with American Contractors Indemnity Company and active workers' compensation coverage from Endurance Assurance Corporation. The business is based in Concord, in Contra Costa County, California.

Business Information
Address
5100 1b Clayton Road #162
Concord, CA 94521
License Details & Classifications
License Number
750995
Issued
Jun 24, 1998
Status
CLEAR
Expires
Jul 31, 2026
Entity
Corporation
Financial & Insurance Coverage
Contractor Bond
Surety
American Contractors Indemnity Company
Bond Number
10143843
Effective
Jan 1, 2023
Status
Active
Workers' Compensation
Coverage
Workers' Compensation Insurance
Carrier
Endurance Assurance Corporation
Policy Number
EAW0000408400
Effective
Oct 1, 2025
Expires
Oct 1, 2026
Review

This contractor warrants a closer look before contracting:

  • License expires in 30 days
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 Sinclair Construction CO INC licensed in California?

Yes. Sinclair Construction CO INC holds California Contractors State License Board license number 750995, which is active and in good standing. The license was first issued on June 24, 1998. It is valid through July 31, 2026.

What does Sinclair Construction CO INC specialize in?

Sinclair Construction CO INC is licensed for 2 CSLB classifications: B General Building Contractor and C-15 Flooring and Floor Covering Contractor.

Where is Sinclair Construction CO INC headquartered?

Sinclair Construction CO INC is headquartered at 5100 1b Clayton Road #162, Concord, CA 94521, in Contra Costa County, California.

Does Sinclair Construction CO INC have an active surety bond on file with CSLB?

Yes. Sinclair Construction CO INC has an active California contractor surety bond filed with American Contractors Indemnity Company.

Does Sinclair Construction CO INC carry workers' compensation coverage?

Yes. Sinclair Construction CO INC carries active workers' compensation coverage through Endurance Assurance Corporation.

How do I verify Sinclair Construction CO INC's contractor license?

You can verify Sinclair Construction CO INC's license directly with the California Contractors State License Board at https://www.cslb.ca.gov/OnlineServices/CheckLicenseII/LicenseDetail.aspx?LicNum=750995.

Activity Timeline
  1. License issuedJun 24, 1998
  2. Bond activeJan 1, 2023
  3. WC coverage startsOct 1, 2025
  4. License expiresJul 31, 2026
  5. WC expiresOct 1, 2026
Other contractors in Contra Costa County
California lien & payment resources

Working a California job with Sinclair Construction CO INC, 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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