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California contractor license

Water Works Plumbing

Water Works Plumbing of Pleasant Hill holds California license 879261 (B General Building, C36 Plumbing). The CSLB file dated Nov 1, 2026 lists it as active.1 It expires Jun 30, 2028.

Doing business as W S B Construction Inc.

Licensed 20 years, longer than 70% of 9,564 active California plumbing contractors.

Active

Water Works Plumbing, Pleasant Hill

License
879261
Class
B General Building; C36 Plumbing
Expires
Jun 30, 2028
Bond
$25,000
Workers' comp
Exempt

CSLB file dated Nov 1, 2026

From the CSLB file dated Nov 1, 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 Nov 1, 2026. Confirm with the board: CSLB license check

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

Bond
$25,000Atlantic Specialty Insurance Company, from Jun 8, 2026, continuous
Liability insurance
Not in the CSLB fileCheck with the board
Workers' comp
Exemptfrom Jun 2, 2026

Who is on this license?

Responsible managing officer, CEO and president
William S. BergrenSince Jun 12, 2006

What work does this license cover?

Issued Jun 12, 2006.

The workers' comp exemption means the holder told the CSLB it has no employees. If a crew works on your job, ask for a workers' comp certificate.

Which other Pleasant Hill businesses hold B General Building?

California plumbing contractorsCalifornia general 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, Nov 1, 2026)
  2. Contractors State License Board (CSLB)