Tanko Dennis, C-57 Well Drilling Contractor in Sonora, CA
Tanko Dennis operating as a sole owner holds an active California contractor license (CSLB #530534), valid through Oct 31, 2026. First issued in 1988, the license has been on the CSLB roster for 38 years. It carries a single CSLB classification: C-57 — Well Drilling Contractor. Records show an active surety bond on file with Ohio Casualty Insurance Company (the) and an exempt workers' compensation status (no employees on payroll). The business is based in Sonora, in Tuolumne County, California.
- License Number
- 530534
- Issued
- May 18, 1988
- Status
- CLEAR
- Expires
- Oct 31, 2026
- Entity
- Sole Owner
- Surety
- Ohio Casualty Insurance Company (the)
- Bond Number
- 796969C
- Effective
- Jan 1, 2023
- Status
- Active
- Coverage
- Exempt
- Carrier
- —
- Policy Number
- —
- Effective
- Sep 23, 2024
- Expires
- —
This contractor warrants a closer look before contracting:
- License expires in 54 days
- Workers' comp listed as exempt
An automated summary of public CSLB data, not a credit score, rating, or endorsement. How we determine this
Is Tanko Dennis licensed in California?
Yes. Tanko Dennis holds California Contractors State License Board license number 530534, which is active and in good standing. The license was first issued on May 18, 1988. It is valid through October 31, 2026.
What does Tanko Dennis specialize in?
Tanko Dennis is licensed for one CSLB classification: C-57 Well Drilling Contractor.
Where is Tanko Dennis headquartered?
Tanko Dennis is headquartered at 21047 Shaws Flat Road, Sonora, CA 95370, in Tuolumne County, California.
Does Tanko Dennis have an active surety bond on file with CSLB?
Yes. Tanko Dennis has an active California contractor surety bond filed with Ohio Casualty Insurance Company (the).
Does Tanko Dennis carry workers' compensation coverage?
Tanko Dennis reports an exempt workers' compensation status, meaning the business has no employees on payroll.
How do I verify Tanko Dennis's contractor license?
You can verify Tanko Dennis's license directly with the California Contractors State License Board at https://www.cslb.ca.gov/OnlineServices/CheckLicenseII/LicenseDetail.aspx?LicNum=530534.
- License issuedMay 18, 1988
- Bond activeJan 1, 2023
- WC coverage startsSep 23, 2024
- License expiresOct 31, 2026
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