DIABLO BOILER & STEAM INC
License
- Status
- CLEAR
- First issued
- May 25, 1988
- Reissued
- September 24, 2018
- Expires
- September 30, 2028
- Entity
- Corporation
- Address of record
- 729 FULTON SHIPYARD RD #B1, Antioch, CA 94509
- Phone of record
- (925) 776 5089
Contractor bond
- Surety
- ATLANTIC SPECIALTY INSURANCE COMPANY
- Bond number
- 800270199
- Amount
- $25,000
- Effective
- September 1, 2026
Workers’ compensation
- Carrier
- STATE COMPENSATION INSURANCE FUND
- Policy number
- 9065192
- Effective
- August 1, 2026
- Expires
- August 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 5 licensed boiler, hot water heating and steam fitting contractors in Antioch.
People on this license
| Name | Title | Since | Through |
|---|---|---|---|
| CLAY TIMOTHY JAY | Responsible Managing Officer/Chief Executive Officer/President | September 24, 2018 | Current |
| CLAY TIMOTHY JAY | Sole Owner | May 25, 1988 | September 24, 2018 |
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/530963" target="_blank" rel="noopener">
<img src="https://bookofbuilders.com/badge/530963.svg" alt="DIABLO BOILER & STEAM INC — California contractor license #530963 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.