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California contractor license
Prater Plumbing
Prater Plumbing of Redwood City holds California license 925920 (A General Engineering, B General Building, C4 Boiler, Hot Water Heating and Steam Fitting, C20 Warm-Air Heating, Ventilating and Air-Conditioning, C36 Plumbing). The CSLB file dated Oct 29, 2026 lists it as active.1 It expires Dec 31, 2026.
Doing business as Kessler Plumbing & Heating Inc.
Licensed 17 years, longer than 76% of 26 active Redwood City plumbing contractors.
Active
- Workers' comp ends Dec 19, 2026 (51 days)
Prater Plumbing, Redwood City
- License
- 925920
- Class
- A General Engineering; B General Building; C4 Boiler, Hot Water Heating and Steam Fitting; C20 Warm-Air Heating, Ventilating and Air-Conditioning; C36 Plumbing
- Expires
- Dec 31, 2026
- Bond
- $25,000
- Workers' comp
- Insured to Dec 19, 2026
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
- $25,000Atlantic Specialty Insurance Company, from Aug 14, 2026, continuous
- Liability insurance
- Not in the CSLB fileCheck with the board
- Workers' comp
- InsuredNational Casualty Company, from Dec 19, 2023, to Dec 19, 2026
Who is on this license?
- Officer
- Jonathan E. BurnettSince Dec 9, 2008
- Responsible managing officer, CEO and president
- Timotheus SpoerlSince Dec 9, 2008
What work does this license cover?
Issued Dec 9, 2008.
Which other Redwood City businesses hold A General Engineering?
What should you check before hiring?
What to ask before you hire
- Ask whether it has been renewed. Something on this license ends within 60 days. Check again before you pay a deposit.
- 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 29, 2026)
- Contractors State License Board (CSLB)