Public CSLB records

Williams Pipeline Contractors INC, A General Engineering Contractor in Mission Hills, CA

License #353528·Corporation·Mission Hills, Los Angeles County
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Summary

Williams Pipeline Contractors INC operating as a corporation holds an active California contractor license (CSLB #353528), valid through Aug 31, 2026. First issued in 1978, the license has been on the CSLB roster for 48 years. It carries 4 CSLB classifications: A General Engineering Contractor, C-34 Pipeline Contractor, C-36 Plumbing Contractor, and C-42 Sanitation System Contractor. Records show an active surety bond on file with Swiss Re Corporate Solutions Premier Insurance Corporation and active workers' compensation coverage from Travelers Property Casualty Company of America. The business is based in Mission Hills, in Los Angeles County, California.

Business Information
Address
P O Box 951030
Mission Hills, CA 91395
License Details & Classifications
License Number
353528
Issued
Mar 17, 1978
Status
CLEAR
Expires
Aug 31, 2026
Entity
Corporation
Financial & Insurance Coverage
Contractor Bond
Surety
Swiss Re Corporate Solutions Premier Insurance Corporation
Bond Number
S7003507
Effective
Jan 1, 2023
Status
Active
Workers' Compensation
Coverage
Workers' Compensation Insurance
Carrier
Travelers Property Casualty Company of America
Policy Number
UB4J573465262SG
Effective
Jan 1, 2026
Expires
Jan 1, 2027
Review

This contractor warrants a closer look before contracting:

  • License expires in 64 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 Williams Pipeline Contractors INC licensed in California?

Yes. Williams Pipeline Contractors INC holds California Contractors State License Board license number 353528, which is active and in good standing. The license was first issued on March 17, 1978. It is valid through August 31, 2026.

What does Williams Pipeline Contractors INC specialize in?

Williams Pipeline Contractors INC is licensed for 4 CSLB classifications: A General Engineering Contractor, C-34 Pipeline Contractor, C-36 Plumbing Contractor, and C-42 Sanitation System Contractor.

Where is Williams Pipeline Contractors INC headquartered?

Williams Pipeline Contractors INC is headquartered at P O Box 951030, Mission Hills, CA 91395, in Los Angeles County, California.

Does Williams Pipeline Contractors INC have an active surety bond on file with CSLB?

Yes. Williams Pipeline Contractors INC has an active California contractor surety bond filed with Swiss Re Corporate Solutions Premier Insurance Corporation.

Does Williams Pipeline Contractors INC carry workers' compensation coverage?

Yes. Williams Pipeline Contractors INC carries active workers' compensation coverage through Travelers Property Casualty Company of America.

How do I verify Williams Pipeline Contractors INC's contractor license?

You can verify Williams Pipeline Contractors INC's license directly with the California Contractors State License Board at https://www.cslb.ca.gov/OnlineServices/CheckLicenseII/LicenseDetail.aspx?LicNum=353528.

Activity Timeline
  1. License issuedMar 17, 1978
  2. Bond activeJan 1, 2023
  3. WC coverage startsJan 1, 2026
  4. License expiresAug 31, 2026
  5. WC expiresJan 1, 2027
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California lien & payment resources

Working a California job with Williams Pipeline Contractors 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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