DESIGN ONE
License
- Status
- CLEAR
- First issued
- December 31, 1986
- Expires
- December 31, 2026
- Entity
- Sole Owner
- Address of record
- 17615 PIONEER BLVD, Artesia, CA 90701
- Phone of record
- (562) 809 0448
Contractor bond
- Surety
- WESTERN SURETY COMPANY
- Bond number
- 66864531
- Amount
- $25,000
- Effective
- March 14, 2024
Workers’ compensation
This contractor has certified to the state that they have no employees, so they carry no workers’ compensation policy. The exemption covers only the license holder. If anyone else works on your project — a crew, a helper, a day laborer — they are not covered, and an injury on your property can become your liability. Ask who will physically be on site.
Are they licensed for your job?
A California contractor may only contract for work their classification covers. Pick the job and this reads the license on file against it.
Licensed to perform
A contractor may only contract for work within their classifications.
People on this license
| Name | Title | Since | Through |
|---|---|---|---|
| CHUNG YUN WILLIAM | Sole Owner | December 31, 1986 | Current |
| CHUNG YUN WILLIAM | Sole Owner | January 4, 1996 | Current |
Verified status badge
Put this on your website or in a bid packet. It reads the state’s record live every time someone loads it, so it is never a screenshot of a good day. Free, and you don’t need to claim this listing to use it.
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<img src="https://bookofbuilders.com/badge/503509.svg" alt="DESIGN ONE — California contractor license #503509 status, verified against CSLB records" width="268" height="76">
</a>The badge shows whatever the CSLB record says — including a suspension or lapsed coverage. There is no paid version and no way to change what it displays. That is what makes it worth showing. The same data as JSON if you’d rather build your own.
Is this your license?
Claim this page to add your photos, description, service area and contact details. The state’s record above stays exactly as it is — claiming adds to a page, it never edits or hides anything the CSLB reports.
Source: California Contractors State License Board public records. Coverage lapse is evaluated against today’s date; all other fields reflect the latest weekly CSLB file. Confirm at the CSLB’s official record before signing a contract.