Clear

ADVANCED PLUMBING AND ROOTER SERVICE

License #782789San RamonCorporationLicensed since August 11, 2000

License

Status
CLEAR · BOND Pay Pending
First issued
August 11, 2000
Reissued
June 26, 2015
Expires
June 30, 2027
Entity
Corporation
Address of record
231 MARKET PLACE 540, San Ramon, CA 94583
Phone of record
(925) 383 6100

Contractor bond

Surety
BUSINESS ALLIANCE INSURANCE COMPANY
Bond number
G19033211457
Amount
$25,000
Effective
May 21, 2026

Workers’ compensation

Carrier
STATE COMPENSATION INSURANCE FUND
Policy number
9392952
Effective
January 1, 2026
Expires
January 1, 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 21 licensed plumbing contractors in San Ramon.

People on this license

NameTitleSinceThrough
VAN MASTRIGT NILDA MARIAOfficerJune 26, 2015Current
VAN MASTRIGT WILLIAM NIELResponsible Managing Officer/Chief Executive Officer/PresidentJune 26, 2015Current
VAN MASTRIGT WILLIAM NIELSole OwnerAugust 11, 2000January 1, 2004
VAN MASTRIGT WILLIAM NIELSole OwnerAugust 11, 2000June 26, 2015

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.

ADVANCED PLUMBING AND ROOTER SERVICE — California contractor license #782789 status, verified against CSLB records
<a href="https://bookofbuilders.com/license/782789" target="_blank" rel="noopener">
  <img src="https://bookofbuilders.com/badge/782789.svg" alt="ADVANCED PLUMBING AND ROOTER SERVICE — California contractor license #782789 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.