Public Record · California Contractor

Is Ming Chu Chen Chien licensed, insured & complaint-free in California?

Ming Chu Chen Chien has held an active California contractor license (CSLB #820540, B) for 23 years, with no open enforcement actions on record as of June 27, 2026, according to the California Contractors State License Board (CSLB).

Contractor record · CSLB #820540

Ming Chu Chen Chien

General Building (B) · Diamond Bar, CA
License Active

Active · no open actions

License status is CLEAR with no open enforcement actions on record, per the California Contractors State License Board (CSLB).

As of June 27, 2026CSLB code: CLEARVerify on CSLB
License #
CSLB #820540
Classification
B
General Building (B)
Years licensed
23
since June 9, 2003
Contractor's bond
Active
$25,000
The full dossierRedacted preview
Bond suretywho 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 3 classifications held
Registered business entity & contact
Dated certificate PDF — emailed with your receipt

Unlock every field above for Ming Chu Chen Chien — 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.

$9 · instant PDF · emailed with receipt

Principals on record · CSLB

CHIEN MING-CHU CHENSole Owner

Workers’ compensation · CSLB

Exempt
Effective
May 19, 2025

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 #820540 on the official CSLB site. This page is current as of June 27, 2026; the CSLB record is updated continuously.

What the contractor's bond covers

California requires most licensed contractors to carry a $25,000 contractor's bond. It can pay certain claims for license-law violations — it is not insurance for your project and is not a measure of work quality. The CSLB lists the surety and bond number.

What "workers'-comp exempt" means

A contractor with no employees can file a workers'-comp exemption with the CSLB. It is a normal, filed status — not a lapse — but it means there may be no workers'-comp coverage if the contractor brings on help. Confirm coverage before work that involves a crew.

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 B covers

CSLB #820540 is classified General Building (B). 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 Ming Chu Chen Chien licensed in California?

Yes. As of June 27, 2026, the California Contractors State License Board (CSLB) lists Ming Chu Chen Chien with an active contractor license, CSLB #820540 (classification B), in a CLEAR status.

Is Ming Chu Chen Chien insured?

The California Contractors State License Board (CSLB) records Ming Chu Chen Chien as workers'-comp exempt as of June 27, 2026 — typically a sole owner with no employees. An exemption is a filed declaration, not a lapse.

Does Ming Chu Chen Chien 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 #820540. The CSLB is the authoritative source for complaint history.

Who runs Ming Chu Chen Chien?

The California Contractors State License Board (CSLB) lists Ming Chu Chen Chien as a sole-owner or single-principal license (CSLB #820540). The named principal is shown in the personnel section below, as recorded by the CSLB.

Is Ming Chu Chen Chien bonded?

As of June 27, 2026, the California Contractors State License Board (CSLB) shows an active contractor's bond on file for CSLB #820540. California requires a $25,000 contractor's bond; it protects against certain license-law violations, not a guarantee of work quality.

How long has Ming Chu Chen Chien been licensed?

The California Contractors State License Board (CSLB) shows CSLB #820540 was first issued on June 9, 2003, about 23 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.