Clear

UNITED MECHANICAL

License #828335San JoseCorporationLicensed since December 11, 2003

License

Status
CLEAR
First issued
December 11, 2003
Expires
December 31, 2027
Entity
Corporation
Address of record
2185 OAKLAND ROAD, San Jose, CA 95131
Phone of record
(408) 232 9000

Contractor bond

Surety
ARCH INSURANCE COMPANY
Bond number
SU1143918
Amount
$25,000
Effective
January 1, 2023

Workers’ compensation

Carrier
ZURICH AMERICAN INSURANCE COMPANY
Policy number
WC508458913
Effective
November 1, 2025
Expires
November 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 265 licensed warm-air heating, ventilating and air-conditioning contractors in San Jose.

People on this license

NameTitleSinceThrough
BERTOLAMI LEONARD CEASEREResponsible Managing Officer/Chief Executive Officer/PresidentFebruary 3, 2016Current
BERTOLAMI LEONARD CEASEREResponsible Managing Officer/Chief Executive Officer/PresidentFebruary 8, 2017Current
HADINGER WILLIAM JOSEPHResponsible Managing OfficerJuly 19, 2016Current
HADINGER WILLIAM JOSEPHResponsible Managing OfficerOctober 28, 2021Current
BERTOLAMI LEONARD CEASEREResponsible Managing OfficerDecember 14, 2015February 3, 2016
GUNDERSEN JAN ERIKOfficerDecember 11, 2003December 31, 2025
SOSINE THOMAS LEEResponsible Managing Officer/Chief Executive Officer/PresidentDecember 11, 2003February 8, 2017
SOSINE THOMAS LEEResponsible Managing Officer/Chief Executive Officer/PresidentFebruary 17, 2004February 8, 2017

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.

UNITED MECHANICAL — California contractor license #828335 status, verified against CSLB records
<a href="https://bookofbuilders.com/license/828335" target="_blank" rel="noopener">
  <img src="https://bookofbuilders.com/badge/828335.svg" alt="UNITED MECHANICAL — California contractor license #828335 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.