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California contractor license
Madden Plumbing LLC
Madden Plumbing LLC of San Francisco holds California license 825418 (C16 Fire Protection, C36 Plumbing). The CSLB file dated Oct 31, 2026 lists it as active.1 It expires Aug 31, 2028.
Licensed 23 years, longer than 75% of 252 active San Francisco plumbing contractors.
Active
Madden Plumbing LLC, San Francisco
- License
- 825418
- Class
- C16 Fire Protection; C36 Plumbing
- Expires
- Aug 31, 2028
- Bond
- $25,000
- Workers' comp
- Insured to Jul 15, 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
- $25,000American Contractors Indemnity Company, from Jan 1, 2023, continuous
- Liability insurance
- Not in the CSLB fileCheck with the board
- Workers' comp
- InsuredNational Casualty Company, from Jul 15, 2026, to Jul 15, 2027
Who is on this license?
- Responsible managing manager
- Damian J. MaddenSince Oct 3, 2003
What work does this license cover?
Issued Oct 3, 2003. Reissued Aug 11, 2016.
- C16 Fire Protection
- C36 Plumbing
Which other San Francisco businesses hold C16 Fire Protection?
- O'Donovan Plumbing IncLicensed since 1989
- A M West Mechanical IncLicensed since 2000
- A G Quality PlumbingLicensed since 2003
- K C Plumb Service IncLicensed since 2006
- Chung Wah Plumbing & Fire ProtectionLicensed since 2007
Plumbing Contractors in San FranciscoCalifornia plumbing contractors
What should you check before hiring?
What to ask before you hire
- Get the license number in writing. The name on the license should match the name on your contract and invoice.
- Check the class covers the job. A license for one trade doesn't cover another. California license classes
- Ask for a certificate of insurance sent to you by the insurance agent, not handed over by the contractor. How to read a COI
- 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.
- 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
- Don't sign or pay a deposit until the CSLB shows the license active again.
- 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.
- If work has started, hold further payments, keep the contract, receipts and photos, and file a complaint with Contractors State License Board (CSLB).
- Check another contractor. California license lookup
Sources
- CSLB License Master (cslb.ca.gov, Oct 31, 2026)
- Contractors State License Board (CSLB)