EXPERT TREE SERVICE
License
- Status
- CLEAR
- First issued
- June 6, 1991
- Expires
- June 30, 2027
- Entity
- Corporation
- Address of record
- P O BOX 1256, Orinda, CA 94563
- Phone of record
- (925) 254 8733
Contractor bond
- Surety
- WESTERN SURETY COMPANY
- Bond number
- 67694792
- Amount
- $25,000
- Effective
- March 29, 2026
Workers’ compensation
- Carrier
- OMAHA NATIONAL CASUALTY COMPANY
- Policy number
- ONCC1034906
- Effective
- October 1, 2025
- Expires
- October 1, 2026
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 General Engineering Contractor
- C-21 Building Moving / Demolition Contractor
- C-27 Landscaping Contractor
- C-57 Well Drilling Contractor
- D-49 Tree Service
A contractor may only contract for work within their classifications.
People on this license
| Name | Title | Since | Through |
|---|---|---|---|
| GATES BRIAN TIMOTHY | Responsible Managing Officer/Chief Executive Officer/President | December 17, 2013 | Current |
| GATES BRIAN TIMOTHY | Responsible Managing Officer/Chief Executive Officer/President | June 6, 1991 | Current |
| GATES BRIAN TIMOTHY | Responsible Managing Officer/Chief Executive Officer/President | October 21, 1993 | Current |
| GATES BRIAN TIMOTHY | Responsible Managing Officer/Chief Executive Officer/President | April 25, 1995 | Current |
| GATES BRIAN TIMOTHY | Responsible Managing Officer/Chief Executive Officer/President | January 29, 2002 | Current |
| GATES AMBER LYNN | Officer | June 3, 1997 | May 15, 2017 |
| GATES BRIAN TIMOTHY | Responsible Managing Officer/Chief Executive Officer/President | June 29, 2000 | January 1, 2004 |
| GATES KRISTEN MARIE | Officer | June 6, 1991 | August 26, 1996 |
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.
<a href="https://bookofbuilders.com/license/621402" target="_blank" rel="noopener">
<img src="https://bookofbuilders.com/badge/621402.svg" alt="EXPERT TREE SERVICE — California contractor license #621402 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.