Diamond D Engineering, A General Engineering Contractor in Ukiah, CA
Diamond D Engineering operating as a limited liability holds an active California contractor license (CSLB #1027104), valid through May 31, 2027. First issued in 2017, the license has been on the CSLB roster for 9 years. It carries a single CSLB classification: A — General Engineering Contractor. Records show an active surety bond on file with Western Surety Company and a previously-filed workers' compensation policy with Sentinel Insurance Company LTD that is no longer active. The business is based in Ukiah, in Mendocino County, California.
- License Number
- 1027104
- Issued
- May 22, 2017
- Status
- CLEAR
- Expires
- May 31, 2027
- Entity
- Limited Liability
- Surety
- Western Surety Company
- Bond Number
- 67513084
- Effective
- Apr 24, 2025
- Status
- Active
- Coverage
- Workers' Compensation Insurance
- Carrier
- Sentinel Insurance Company LTD
- Policy Number
- 51WEABG7G8A
- Effective
- Aug 10, 2025
- Expires
- Aug 10, 2026
This contractor has a compliance issue in its public CSLB record:
- No active workers' comp on file
An automated summary of public CSLB data, not a credit score, rating, or endorsement. How we determine this
Is Diamond D Engineering licensed in California?
Yes. Diamond D Engineering holds California Contractors State License Board license number 1027104, which is active and in good standing. The license was first issued on May 22, 2017. It is valid through May 31, 2027.
What does Diamond D Engineering specialize in?
Diamond D Engineering is licensed for one CSLB classification: A General Engineering Contractor.
Where is Diamond D Engineering headquartered?
Diamond D Engineering is headquartered at 650 Blue Oak Dr, Ukiah, CA 95482, in Mendocino County, California.
Does Diamond D Engineering have an active surety bond on file with CSLB?
Yes. Diamond D Engineering has an active California contractor surety bond filed with Western Surety Company.
Does Diamond D Engineering carry workers' compensation coverage?
Diamond D Engineering has a previously-filed workers' compensation policy with Sentinel Insurance Company LTD that is no longer active.
How do I verify Diamond D Engineering's contractor license?
You can verify Diamond D Engineering's license directly with the California Contractors State License Board at https://www.cslb.ca.gov/OnlineServices/CheckLicenseII/LicenseDetail.aspx?LicNum=1027104.
- License issuedMay 22, 2017
- Bond activeApr 24, 2025
- WC coverage startsAug 10, 2025
- WC expiredAug 10, 2026
- License expiresMay 31, 2027
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