Contractor License Proof

Know How Plumbing

Licensed

Verified against CSLB on · View on CSLB

License details

License number
1052689
Status
Active
Classifications
C-36 · Plumbing
Contractor bond
$25,000
Workers' comp
ExemptNo employees — not a red flag.
License term on file
April 22, 2019 – April 30, 2027

Business

  • (626) 848 9262 (CSLB public record)
  • 905 SYCAMORE CT UNIT C, Upland, CA 91786San Bernardino County

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What to check next

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Frequently asked questions

Is Know How Plumbing licensed in California?

Yes. Know How Plumbing holds an active California state contractor license (CSLB #1052689), verified against the CSLB public record on June 17, 2026.

What is Know How Plumbing's CSLB license number?

Know How Plumbing's California contractor license number is 1052689. 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 Know How Plumbing licensed for?

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

How do I verify Know How Plumbing's license myself?

Look up license #1052689 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 #1052689 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.