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California contractor license
Big Bore Drilling Certified Septic Co & Hydroflushing
Big Bore Drilling Certified Septic Co & Hydroflushing of Fresno holds California license 579423 (A General Engineering, C42 Sanitation System). The CSLB file dated Nov 1, 2026 lists it as active.1 It expires Oct 31, 2027.
Doing business as Big Bore Drilling Inc.
Licensed 37 years, longer than 86% of 629 active Fresno general contractors.
Active
Big Bore Drilling Certified Septic Co & Hydroflushing, Fresno
- License
- 579423
- Class
- A General Engineering; C42 Sanitation System
- Expires
- Oct 31, 2027
- Bond
- $25,000
- Workers' comp
- Employee leasing to Jun 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
- $25,000American Contractors Indemnity Company, from Jan 1, 2023, continuous
- Liability insurance
- Not in the CSLB fileCheck with the board
- Workers' comp
- Employee leasingAce American Insurance Company, from Jun 1, 2026, to Jun 1, 2027
Who is on this license?
- Responsible managing officer
- Beverly J. DammSince Oct 16, 1989
- Responsible managing officer, CEO and president
- Jason E. DammSince Jul 2, 2024
What work does this license cover?
Issued Oct 16, 1989.
- A General Engineering
- C42 Sanitation System
Which other Fresno businesses hold A General Engineering?
- Garcia J I Construction IncLicensed since 1989
- Williams D H Construction IncorporatedLicensed since 1989
- West Star Environmental IncLicensed since 1990
- Lasar Underground Construction IncLicensed since 1991
- Avi Irrigation IncLicensed since 1991
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)