Public Record · California Contractor

Is Diamond Screen Doors & Window Coverings licensed, insured & complaint-free in California?

As of June 27, 2026, Diamond Screen Doors & Window Coverings holds an active California contractor license (CSLB #1133735), classification D28, and carries an active workers'-compensation policy, with no open enforcement actions on record, according to the California Contractors State License Board (CSLB).

Contractor record · CSLB #1133735

Diamond Screen Doors & Window Coverings

D28 · San Dimas, 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 #1133735
Classification
D28
D28
Years licensed
1
since February 28, 2025
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 2 classifications held
Registered business entity & contact
Dated certificate PDF — emailed with your receipt

Unlock every field above for Diamond Screen Doors & Window Coverings — 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

ZHANG ZILONGOfficer
ZHANG FENGChief Executive Officer/President
TUNG CHENGResponsible Managing Officer

Workers’ compensation · CSLB

Workers' Compensation Insurance
Carrier
HARTFORD CASUALTY INSURANCE COMPANY
Policy
72WECBR3YVJ
Effective
April 18, 2026
Expires
April 18, 2027

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 #1133735 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 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 D28 covers

CSLB #1133735 is classified D28. 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 Screen Doors & Window Coverings licensed in California?

Yes. As of June 27, 2026, the California Contractors State License Board (CSLB) lists Diamond Screen Doors & Window Coverings with an active contractor license, CSLB #1133735 (classification D28), in a CLEAR status.

Is Diamond Screen Doors & Window Coverings insured?

As of June 27, 2026, the California Contractors State License Board (CSLB) shows an active workers'-compensation policy on file for CSLB #1133735. This covers workers' comp; it does not by itself confirm general-liability coverage, which the CSLB does not track.

Does Diamond Screen Doors & Window Coverings 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 #1133735. The CSLB is the authoritative source for complaint history.

Who runs Diamond Screen Doors & Window Coverings?

The California Contractors State License Board (CSLB) lists 3 principals on record for CSLB #1133735, shown by name and title in the personnel section below.

Is Diamond Screen Doors & Window Coverings bonded?

As of June 27, 2026, the California Contractors State License Board (CSLB) shows an active contractor's bond on file for CSLB #1133735. California requires a $25,000 contractor's bond; it protects against certain license-law violations, not a guarantee of work quality.

How long has Diamond Screen Doors & Window Coverings been licensed?

The California Contractors State License Board (CSLB) shows CSLB #1133735 was first issued on February 28, 2025, about 1 year 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.