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State files updated Oct 31, 2026
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California contractor license

American Leak Detection

American Leak Detection of San Rafael holds California license 662617 (C36 Plumbing). The CSLB file dated Oct 31, 2026 lists it as active.1 It expires Apr 30, 2028.

Doing business as Norfin Inc.

Licensed 33 years, longer than 70% of 30 active San Rafael plumbing contractors.

Active

American Leak Detection, San Rafael

License
662617
Class
C36 Plumbing
Expires
Apr 30, 2028
Bond
$25,000
Workers' comp
Insured to May 1, 2027

CSLB file dated Oct 31, 2026

From the CSLB file dated Oct 31, 2026. Not a consumer report; check the board before you hire.

Has the board taken action on this license?

None in the CSLB file dated Oct 31, 2026. Confirm with the board: CSLB license check

What bond, insurance and workers' comp are on file?

Bond
$25,000Western Surety Company, from Jan 23, 2025, continuous
Liability insurance
Not in the CSLB fileCheck with the board
Workers' comp
InsuredTechnology Insurance Company Inc, from May 1, 2026, to May 1, 2027

Who is on this license?

Officer
Robert C. MacaulaySince Apr 17, 2002
Responsible managing officer, CEO and president
Peter A. MacaulaySince Apr 17, 2002

What work does this license cover?

Issued Jan 11, 1993. Reissued Apr 17, 2002.

What other licenses does this business hold?

Which other San Rafael businesses hold C36 Plumbing?

California plumbing contractors

What should you check before hiring?

What to ask before you hire

  1. Get the license number in writing. The name on the license should match the name on your contract and invoice.
  2. Check the class covers the job. A license for one trade doesn't cover another. California license classes
  3. Ask for a certificate of insurance sent to you by the insurance agent, not handed over by the contractor. How to read a COI
  4. Ask who will be on site. If a crew works on your property, ask for proof of workers' comp. An exemption on file means the contractor told the CSLB it has no employees.
  5. Put it in a written contract: license number, price, start date and payment schedule. Check the license again on the day you sign.

If the license is lapsed

  1. Don't sign or pay a deposit until the CSLB shows the license active again.
  2. Ask the contractor why. For a bond or insurance lapse, ask for proof that the new bond or policy was filed with the CSLB, then check again.
  3. If work has started, hold further payments, keep the contract, receipts and photos, and file a complaint with Contractors State License Board (CSLB).
  4. Check another contractor. California license lookup

Sources

  1. CSLB License Master (cslb.ca.gov, Oct 31, 2026)
  2. Contractors State License Board (CSLB)