Clear

T S C CONSTRUCTION CO

License #644387OrindaSole OwnerLicensed since May 8, 1992

License

Status
CLEAR
First issued
May 8, 1992
Expires
May 31, 2028
Entity
Sole Owner
Address of record
37 ROBERT ROAD, Orinda, CA 94563
Phone of record
(510) 325 8090

Contractor bond

Surety
MERCHANTS BONDING COMPANY (MUTUAL)
Bond number
101810402
Amount
$25,000
Effective
March 12, 2026

Workers’ compensation

Carrier
AMERICAN CASUALTY COMPANY OF READING PA
Policy number
8035895167
Effective
May 8, 2026
Expires
May 8, 2027

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. See all 79 licensed general building contractors in Orinda.

People on this license

NameTitleSinceThrough
CHEUNG SUM TSZSole OwnerMay 8, 1992Current
CHEUNG SUM TSZSole OwnerMay 24, 2000January 1, 2004

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.

T S C CONSTRUCTION CO — California contractor license #644387 status, verified against CSLB records
<a href="https://bookofbuilders.com/license/644387" target="_blank" rel="noopener">
  <img src="https://bookofbuilders.com/badge/644387.svg" alt="T S C CONSTRUCTION CO — California contractor license #644387 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.