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State files updated Oct 28, 2026
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California contractor license

Sonoma County Pump

Sonoma County Pump of Sebastopol holds California license 414579 (D21). The CSLB file dated Oct 28, 2026 lists it as active.1 It expires Dec 31, 2027.

Doing business as Sonoma County Pump & Well Inc.

Active

Sonoma County Pump, Sebastopol

License
414579
Class
D21
Expires
Dec 31, 2027
Bond
$25,000
Workers' comp
Insured to May 15, 2027

CSLB file dated Oct 28, 2026

From the CSLB file dated Oct 28, 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 Dec 11, 2025, continuous
Liability insurance
Not in the CSLB fileCheck with the board
Workers' comp
InsuredTechnology Insurance Company Inc, from May 15, 2026, to May 15, 2027

What work does this license cover?

Issued Nov 25, 1981.

Which other Sebastopol businesses hold D21?

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 28, 2026)
  2. Contractors State License Board (CSLB)