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Zak Plumbing CO

License #654608·Sole Owner·Mill Valley, Marin County
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Summary

Zak Plumbing CO operating as a sole owner is licensed in California under CSLB number 654608. The license was first issued in 1992, putting the business at 34 years on the active CSLB roster. It carries a single CSLB classification: C-36 — Plumbing Contractor. Records show an active surety bond on file with Western Surety Company and a previously-filed workers' compensation policy with Security National Insurance Company that is no longer active. The business is based in Mill Valley, in Marin County, California.

Business Information
Address
P O Box 281
Mill Valley, CA 94942
License Details & Classifications
License Number
654608
Issued
Sep 22, 1992
Status
CLEAR
Expires
Sep 24, 2026
Entity
Sole Owner
Financial & Insurance Coverage
Contractor Bond
Surety
Western Surety Company
Bond Number
67745856
Effective
Feb 5, 2026
Status
Active
Workers' Compensation
Coverage
Workers' Compensation Insurance
Carrier
Security National Insurance Company
Policy Number
SWC1554373
Effective
May 6, 2025
Expires
May 6, 2026
Alert

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

  • No active workers' comp on file
License StatusActive
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 Zak Plumbing CO licensed in California?

Yes. Zak Plumbing CO holds California Contractors State License Board license number 654608. The license was first issued on September 22, 1992. It is valid through September 24, 2026.

What does Zak Plumbing CO specialize in?

Zak Plumbing CO is licensed for one CSLB classification: C-36 Plumbing Contractor.

Where is Zak Plumbing CO headquartered?

Zak Plumbing CO is headquartered at P O Box 281, Mill Valley, CA 94942, in Marin County, California.

Does Zak Plumbing CO have an active surety bond on file with CSLB?

Yes. Zak Plumbing CO has an active California contractor surety bond filed with Western Surety Company.

Does Zak Plumbing CO carry workers' compensation coverage?

Zak Plumbing CO has a previously-filed workers' compensation policy with Security National Insurance Company that is no longer active.

How do I verify Zak Plumbing CO's contractor license?

You can verify Zak Plumbing CO's license directly with the California Contractors State License Board at https://www.cslb.ca.gov/OnlineServices/CheckLicenseII/LicenseDetail.aspx?LicNum=654608.

Activity Timeline
  1. License issuedSep 22, 1992
  2. WC coverage startsMay 6, 2025
  3. Bond activeFeb 5, 2026
  4. WC expiredMay 6, 2026
  5. License expiresSep 24, 2026
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