Contractor License Proof

National Plumbing

Licensed

Verified against CSLB on · View on CSLB

License details

License number
619642
Status
Active
Classifications
C-36 · Plumbing
Contractor bond
$25,000
Workers' comp
Covered
License term on file
May 18, 1991 – May 31, 2027

Business

  • (415) 310 4928 (CSLB public record)
  • 1472 24TH AVENUE, San Francisco, CA 94122San Francisco County

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What to check next

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Frequently asked questions

Is National Plumbing licensed in California?

Yes. National Plumbing holds an active California state contractor license (CSLB #619642), verified against the CSLB public record on June 17, 2026.

What is National Plumbing's CSLB license number?

National Plumbing's California contractor license number is 619642. Look that number up with the CSLB "Check a License" tool to confirm its current status against the public record yourself.

What kind of work is National Plumbing licensed for?

National Plumbing is classified under Plumbing (C-36) by the CSLB.

How do I verify National Plumbing's license myself?

Look up license #619642 with the CSLB "Check a License" tool and compare the status, bond, and workers' compensation details against what's shown on this page. This page reflects the CSLB public record as of June 17, 2026.

Verify it yourself: How to verify a California contractor license · Look up #619642 on CSLB

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See an error in this record? Report incorrect information. Status reflects CSLB data as of the date shown above.