Public CSLB records

Mack Builders INC, A General Engineering Contractor in Tracy, CA

License #947588·Corporation·Tracy, San Joaquin County
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Summary

Mack Builders INC operating as a corporation holds California contractor license #947588, which is currently expired (lapsed May 31, 2026) and not valid to contract until it is renewed. First issued in 2010, the license has been on the CSLB roster for 16 years. It carries 2 CSLB classifications: A General Engineering Contractor and B General Building Contractor. Records show an active surety bond on file with American Contractors Indemnity Company and a previously-filed workers' compensation policy with State Compensation Insurance Fund that is no longer active. The business is based in Tracy, in San Joaquin County, California.

Business Information
Address
15984 Tsirelas Drive
Tracy, CA 95304
License Details & Classifications
License Number
947588
Issued
May 20, 2010
Status
CLEAR
Expires
May 31, 2026
Entity
Corporation
Financial & Insurance Coverage
Contractor Bond
Surety
American Contractors Indemnity Company
Bond Number
100124948
Effective
Jan 1, 2023
Status
Active
Workers' Compensation
Coverage
Workers' Compensation Insurance
Carrier
State Compensation Insurance Fund
Policy Number
9075106
Effective
Oct 9, 2013
Expires
Oct 9, 2026
Cancelled
May 18, 2026
Alert

This contractor has a compliance issue in its public CSLB record:

  • License expired
  • Workers' comp cancelled
License StatusInactive / Expired
Contractor BondOn file
Workers' CompensationInactive

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

Frequently asked questions
Is Mack Builders INC licensed in California?

Mack Builders INC previously held California Contractors State License Board license number 947588, but the license expired on May 31, 2026 and is not currently valid. It was first issued on May 20, 2010.

What does Mack Builders INC specialize in?

Mack Builders INC is licensed for 2 CSLB classifications: A General Engineering Contractor and B General Building Contractor.

Where is Mack Builders INC headquartered?

Mack Builders INC is headquartered at 15984 Tsirelas Drive, Tracy, CA 95304, in San Joaquin County, California.

Does Mack Builders INC have an active surety bond on file with CSLB?

Yes. Mack Builders INC has an active California contractor surety bond filed with American Contractors Indemnity Company.

Does Mack Builders INC carry workers' compensation coverage?

Mack Builders INC has a previously-filed workers' compensation policy with State Compensation Insurance Fund that is no longer active.

How do I verify Mack Builders INC's contractor license?

You can verify Mack Builders INC's license directly with the California Contractors State License Board at https://www.cslb.ca.gov/OnlineServices/CheckLicenseII/LicenseDetail.aspx?LicNum=947588.

Activity Timeline
  1. License issuedMay 20, 2010
  2. WC coverage startsOct 9, 2013
  3. Bond activeJan 1, 2023
  4. WC cancelledMay 18, 2026
  5. License expiredMay 31, 2026
  6. WC expiresOct 9, 2026
Other contractors in San Joaquin County
California lien & payment resources

Working a California job with Mack Builders 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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