MAS SERVICE
License
- Status
- CLEAR
- First issued
- September 15, 1986
- Expires
- June 30, 2028
- Entity
- Corporation
- Address of record
- 5083 LONE TREE WAY, Antioch, CA 94531
- Phone of record
- (888) 314 0451
Contractor bond
- Surety
- OHIO CASUALTY INSURANCE COMPANY (THE)
- Bond number
- 792706C
- Amount
- $25,000
- Effective
- January 1, 2023
Workers’ compensation
- Carrier
- INSURANCE COMPANY OF THE WEST
- Policy number
- WPL508874000
- Effective
- March 3, 2026
- Expires
- March 3, 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 36 licensed warm-air heating, ventilating and air-conditioning contractors in Antioch.
People on this license
| Name | Title | Since | Through |
|---|---|---|---|
| BILLHEIMER CORINNE K | Officer | September 15, 1986 | Current |
| BILLHEIMER JOHN ALAN | Responsible Managing Officer/Chief Executive Officer/President | September 15, 1986 | Current |
| GELDERT FRANK DUNBAR JR | Responsible Managing Employee | December 22, 2023 | Current |
| BURGHER GEORGE J | Officer | September 15, 1986 | October 2, 1990 |
| CLARK GARY L | Officer | September 15, 1986 | October 2, 1990 |
| MYERS ELIZABETH KATHLEEN | Officer | October 2, 1990 | September 30, 1994 |
| ROBELLO RICHARD PAUL | Responsible Managing Employee | November 6, 1995 | April 1, 1999 |
Verified status badge
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<img src="https://bookofbuilders.com/badge/498289.svg" alt="MAS SERVICE — California contractor license #498289 status, verified against CSLB records" width="268" height="76">
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Is this your license?
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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.