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Gilmore E B & Sons Mechanical Services Inc
Gilmore E B & Sons Mechanical Services Inc of San Francisco holds California license 740278 (C2 Insulation and Acoustical, C4 Boiler, Hot Water Heating and Steam Fitting, C10 Electrical, C20 Warm-Air Heating, Ventilating and Air-Conditioning, C36 Plumbing, C38 Refrigeration, C43 Sheet Metal). The CSLB file dated Nov 1, 2026 lists it as active.1 It expires Sep 30, 2027.
Licensed 29 years, longer than 82% of 323 active San Francisco electrical contractors.
Active
Gilmore E B & Sons Mechanical Services Inc, San Francisco
- License
- 740278
- Class
- C2 Insulation and Acoustical; C4 Boiler, Hot Water Heating and Steam Fitting; C10 Electrical; C20 Warm-Air Heating, Ventilating and Air-Conditioning; C36 Plumbing; C38 Refrigeration; C43 Sheet Metal
- Expires
- Sep 30, 2027
- Bond
- $25,000
- Workers' comp
- Insured to Oct 11, 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
- InsuredState Compensation Insurance Fund, from Oct 11, 2026, to Oct 11, 2027
Who is on this license?
- Responsible managing officer, CEO and president
- Thomas A. GilmoreSince Sep 10, 1997
What work does this license cover?
Issued Sep 10, 1997.
- C2 Insulation and Acoustical
- C4 Boiler, Hot Water Heating and Steam Fitting
- C10 Electrical
- C20 Warm-Air Heating, Ventilating and Air-Conditioning
- C36 Plumbing
- C38 Refrigeration
- C43 Sheet Metal
Which other San Francisco businesses hold C2 Insulation and Acoustical?
- Anderson Rowe & Buckley IncLicensed since 1947
- Temper Insulation Co IncLicensed since 1985
- Baf Specialty IncLicensed since 1999
- City Wide Insulation Company IncLicensed since 2004
- C K Interiors IncLicensed since 2009
Electrical Contractors in San FranciscoCalifornia electrical contractorsPlumbing Contractors in San FranciscoCalifornia plumbing contractors
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)