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California contractor license
Weber A T Plumbing & Mechanical Services Inc
Weber A T Plumbing & Mechanical Services Inc of Alameda holds California license 562098 (C4 Boiler, Hot Water Heating and Steam Fitting, C20 Warm-Air Heating, Ventilating and Air-Conditioning, C36 Plumbing). The CSLB file dated Nov 1, 2026 lists it as active.1 It expires Dec 31, 2026.
Licensed 37 years, longer than 91% of 9,564 active California plumbing contractors.
Active
- License ends Dec 31, 2026 (60 days)
Weber A T Plumbing & Mechanical Services Inc, Alameda
- License
- 562098
- Class
- 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 Sep 15, 2027
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
- $25,000American Contractors Indemnity Company, from Jan 1, 2023, continuous
- Liability insurance
- Not in the CSLB fileCheck with the board
- Workers' comp
- InsuredCarolina Casualty Insurance Company, from Sep 15, 2026, to Sep 15, 2027
Who is on this license?
- Responsible managing officer, CEO and president
- Andrew T. WeberSince Mar 25, 1989
- Responsible managing officer
- Todd J. WeberSince Nov 29, 2010
What work does this license cover?
Issued Mar 25, 1989. Reissued Dec 21, 2004.
Which other Alameda businesses hold C4 Boiler, Hot Water Heating and Steam Fitting?
- Alameda Island Heating & Air Conditioning LLCLicensed since 2007
- Comfort Air Mechanical Systems IncLicensed since 2007
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, Nov 1, 2026)
- Contractors State License Board (CSLB)