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California contractor license

Ace Plumbing & Rooter

Ace Plumbing & Rooter of San Francisco holds California license 829071 (A General Engineering, B General Building, C4 Boiler, Hot Water Heating and Steam Fitting, C10 Electrical, C16 Fire Protection, C36 Plumbing). The CSLB file dated Oct 29, 2026 lists it as active.1 It expires Jun 30, 2027.

Licensed 22 years, longer than 69% of 326 active San Francisco electrical contractors.

Active

Ace Plumbing & Rooter, San Francisco

License
829071
Class
A General Engineering; B General Building; C4 Boiler, Hot Water Heating and Steam Fitting; C10 Electrical; C16 Fire Protection; C36 Plumbing
Expires
Jun 30, 2027
Bond
$25,000
Workers' comp
Insured to Jul 13, 2027

CSLB file dated Oct 29, 2026

From the CSLB file dated Oct 29, 2026. Not a consumer report; check the board before you hire.

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

Bond
$25,000Merchants Bonding Company (Mutual), from Sep 4, 2026, continuous
Liability insurance
Not in the CSLB fileCheck with the board
Workers' comp
InsuredFinancial Pacific Insurance Company, from Jul 13, 2026, to Jul 13, 2027

Who is on this license?

Responsible managing officer
Jonathan N. MillingtonSince Dec 18, 2003

What work does this license cover?

Issued Dec 18, 2003. Reissued Jun 7, 2007.

Which other San Francisco businesses hold A General Engineering?

Electrical Contractors in San FranciscoCalifornia electrical contractorsPlumbing Contractors in San FranciscoCalifornia 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 29, 2026)
  2. Contractors State License Board (CSLB)