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California contractor license
Sterling Environmental Corporation
Sterling Environmental Corporation of San Leandro holds California license 537909 (A General Engineering, ASB Asbestos Certification, C2 Insulation and Acoustical, C22 Asbestos Abatement). The CSLB file dated Nov 1, 2026 lists it as active.1 It expires Aug 31, 2028.
Licensed 38 years, longer than 88% of 171 active San Leandro general contractors.
Active
Sterling Environmental Corporation, San Leandro
- License
- 537909
- Class
- A General Engineering; ASB Asbestos Certification; C2 Insulation and Acoustical; C22 Asbestos Abatement
- Expires
- Aug 31, 2028
- Bond
- $25,000
- Workers' comp
- Insured to Jan 1, 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
- $25,000Great American Insurance Company, from Jan 1, 2023, continuous
- Liability insurance
- Not in the CSLB fileCheck with the board
- Workers' comp
- InsuredZurich American Insurance Company, from Jan 1, 2026, to Jan 1, 2027
Who is on this license?
- Officer
- Louis W. MartinaSince Oct 20, 2017
- Officer
- Kirk R. FernandezSince Oct 24, 2017
- Responsible managing officer, CEO and president
- Harold B. HoppeSince Aug 10, 1988
- Responsible managing employee
- Jose L. Rico GutierrezSince Dec 13, 2024
What work does this license cover?
Issued Aug 10, 1988.
- A General Engineering
- ASB Asbestos Certification
- C2 Insulation and Acoustical
- C22 Asbestos Abatement
Which other San Leandro businesses hold A General Engineering?
- MC Nely Construction CompanyLicensed since 1984
- Pagano Pacific ConstructionLicensed since 1986
- Underwater Resources IncLicensed since 1992
- Baytech Communications IncLicensed since 1999
- Columbia Electric IncLicensed since 1999
General Contractors in San LeandroCalifornia general 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)