CAL STEAM COMPANY
License
- Status
- CLEAR
- First issued
- July 22, 1993
- Reissued
- April 4, 2017
- Expires
- April 30, 2027
- Entity
- Corporation
- Address of record
- 1142 S DIAMOND BL #169, Diamond Bar, CA 91765
- Phone of record
- (213) 798 4693
Contractor bond
- Surety
- WESTERN SURETY COMPANY
- Bond number
- 71886701
- Amount
- $25,000
- Effective
- January 1, 2023
Workers’ compensation
- Carrier
- FLORISTS MUTUAL INSURANCE COMPANY
- Policy number
- 2557672004
- Effective
- August 20, 2026
- Expires
- August 20, 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
- C-20 Warm-Air Heating, Ventilating and Air-Conditioning Contractor
- C-36 Plumbing Contractor
- C-4 Boiler, Hot Water Heating and Steam Fitting Contractor
A contractor may only contract for work within their classifications. See all 28 licensed warm-air heating, ventilating and air-conditioning contractors in Diamond Bar.
People on this license
| Name | Title | Since | Through |
|---|---|---|---|
| KIM JOHNNY UNHYONG | Responsible Managing Officer/Chief Executive Officer/President | April 4, 2017 | Current |
| KIM JOHNNY UNHYONG | Sole Owner | July 22, 1993 | April 4, 2017 |
| KIM JOHNNY UNHYONG | Sole Owner | May 26, 1994 | April 4, 2017 |
| KIM JOHNNY UNHYONG | Sole Owner | October 12, 1999 | January 1, 2004 |
| KIM JOHNNY UNHYONG | Sole Owner | December 29, 2003 | April 4, 2017 |
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.