O'LEARY ROWAN DATA SYSTEMS
License
- Status
- CLEAR
- First issued
- August 7, 1998
- Expires
- August 31, 2028
- Entity
- Corporation
- Address of record
- P O BOX 576898, Modesto, CA 95357
- Phone of record
- (209) 530 1700
Contractor bond
- Surety
- AMERICAN CONTRACTORS INDEMNITY COMPANY
- Bond number
- 100119929
- Amount
- $25,000
- Effective
- January 1, 2023
Workers’ compensation
- Carrier
- GREAT AMERICAN ALLIANCE INSURANCE COMPANY
- Policy number
- WCF45225300
- Effective
- December 1, 2025
- Expires
- December 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 contractor may only contract for work within their classifications. See all 20 licensed low voltage systems contractors in Modesto.
People on this license
| Name | Title | Since | Through |
|---|---|---|---|
| ROWAN ROGER RYANN | Responsible Managing Officer/Chief Executive Officer/President | April 26, 2004 | Current |
| O'LEARY BRIAN RICHARD | Responsible Managing Officer | August 7, 1998 | April 26, 2004 |
| O'LEARY BRIAN RICHARD | Responsible Managing Officer | November 16, 1998 | April 26, 2004 |
| O'LEARY BRIAN RICHARD | Responsible Managing Officer | December 2, 1998 | April 26, 2004 |
| ROWAN ROGER RYANN | Chief Executive Officer/President | August 7, 1998 | April 26, 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.
<a href="https://bookofbuilders.com/license/752744" target="_blank" rel="noopener">
<img src="https://bookofbuilders.com/badge/752744.svg" alt="O'LEARY ROWAN DATA SYSTEMS — California contractor license #752744 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.