Is Diamond D Engineering licensed, insured & complaint-free in California?
As of June 27, 2026, Diamond D Engineering holds an active California contractor license (CSLB #1027104), classification A, and carries an active workers'-compensation policy, with no open enforcement actions on record, according to the California Contractors State License Board (CSLB).
Diamond D Engineering
Active · no open actions
License status is CLEAR with no open enforcement actions on record, per the California Contractors State License Board (CSLB).
- Bond surety — who to file a claim against
- Bond number
- How to make a bond claim
- What “Active · no open actions” means + what to ask
- License expiration date
- All 2 classifications held
- Registered business entity & contact
- Dated certificate PDF — emailed with your receipt
Unlock every field above for Diamond D Engineering — including who to file a claim against the $25,000 bond. Delivered as a dated certificate PDF, emailed with your receipt. Public records, not a background check.
Principals on record · CSLB
Workers’ compensation · CSLB
- Carrier
- SENTINEL INSURANCE COMPANY LTD
- Policy
- 51WEABG7G8A
- Effective
- August 10, 2025
- Expires
- August 10, 2026
What this record means
How to verify this yourself
Every fact on this page comes from the California Contractors State License Board (CSLB). You can confirm it directly: look up CSLB license #1027104 on the official CSLB site. This page is current as of June 27, 2026; the CSLB record is updated continuously.
What this record does and does not tell you
The California Contractors State License Board (CSLB) tracks license status, classification, bond, and workers'-comp. It does not rate work quality, track general-liability insurance, or collect customer reviews. Use it to confirm the license is real and in good standing, then check references and a written contract separately.
What classification A covers
CSLB #1027104 is classified General Engineering (A). A California contractor is licensed only for the classifications on record; work outside them may fall outside the license. The full classification list is on the official CSLB record.
Common questions
Is Diamond D Engineering licensed in California?
Yes. As of June 27, 2026, the California Contractors State License Board (CSLB) lists Diamond D Engineering with an active contractor license, CSLB #1027104 (classification A), in a CLEAR status.
Is Diamond D Engineering insured?
As of June 27, 2026, the California Contractors State License Board (CSLB) shows an active workers'-compensation policy on file for CSLB #1027104. This covers workers' comp; it does not by itself confirm general-liability coverage, which the CSLB does not track.
Does Diamond D Engineering have complaints or violations?
As of June 27, 2026, the California Contractors State License Board (CSLB) shows no open enforcement actions, citations, or disciplinary bonds on record for CSLB #1027104. The CSLB is the authoritative source for complaint history.
Who runs Diamond D Engineering?
The California Contractors State License Board (CSLB) lists 3 principals on record for CSLB #1027104, shown by name and title in the personnel section below.
Is Diamond D Engineering bonded?
The California Contractors State License Board (CSLB) shows the contractor's bond for CSLB #1027104 as lapsed or cancelled as of June 27, 2026. Verify the current bond status on the official CSLB record.
How long has Diamond D Engineering been licensed?
The California Contractors State License Board (CSLB) shows CSLB #1027104 was first issued on May 22, 2017, about 9 years ago.
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This record compiles California Contractors State License Board (CSLB) data — license, insurance, principals, and enforcement — that CSLB publishes across separate pages, current as of June 27, 2026. IsItLicensed is not affiliated with or endorsed by the CSLB or the State of California. Always verify against the official record.