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California contractor license
C & H Plumbing Corporation
C & H Plumbing Corporation of Martinez holds California license 697836 (C36 Plumbing). The CSLB file dated Nov 1, 2026 lists it as active.1 It expires Oct 31, 2028.
Licensed 32 years, longer than 86% of 9,564 active California plumbing contractors.
Active
C & H Plumbing Corporation, Martinez
- Workers' comp on file ended Oct 20, 2026.
- License
- 697836
- Class
- C36 Plumbing
- Expires
- Oct 31, 2028
- Bond
- $25,000
- Workers' comp
- Insured to Oct 20, 2026
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
- $25,000Merchants Bonding Company (Mutual), from Jan 5, 2024, continuous
- Liability insurance
- Not in the CSLB fileCheck with the board
- Workers' comp
- InsuredAmtrust Insurance Company, from Oct 20, 2025, to Oct 20, 2026
Who is on this license?
- Responsible managing officer, CEO and president
- Thomas M. GunsulSince Oct 25, 1994
What work does this license cover?
Issued Oct 25, 1994.
Which other Martinez businesses hold C36 Plumbing?
- T B PlumbingLicensed since 2012
- Nak For Plumbing IncLicensed since 2014
- Frankie's PlumbingLicensed since 2022
- Grizzly Bear Plumbing LLCLicensed since 2023
- Flushitdown LLCLicensed since 2026
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, Nov 1, 2026)
- Contractors State License Board (CSLB)