Mas Service
Antioch · Contra Costa County · CA
VERIFIED
Bestopedia verdict
California’s contractor board lists Mas Service in CLEAR standing. A contractor bond is on file, and workers’ compensation coverage is current.
- License standing
- 30 / 30
- Years licensed
- 20 / 20
- Contractor bond
- 20 / 20
- Workers' comp
- 20 / 20
- Business structure
- 10 / 10
The verified record
- CSLB license
- #498289 verify on CSLB ↗
- Classifications
- C-20, C-38
- Years licensed
- 39.8 years since 09/15/1986
- Contractor bond
- $25,000 OHIO CASUALTY INSURANCE COMPANY (THE)
- Workers’ comp
- Current INSURANCE COMPANY OF THE WEST
- Business type
- Corporation
- Qualifying principal
- John Alan Billheimer, Richard Paul Robello, Frank Dunbar Jr Geldert
- Address of record
- 5083 Lone Tree Way, Antioch, CA 94531
Frequently Asked Questions
Is Mas Service a licensed HVAC contractor in California?
Yes. Mas Service holds California CSLB contractor license #498289 with a C-20 (Warm-Air Heating, Ventilating and Air-Conditioning) classification. Current CSLB status: CLEAR.
What work is Mas Service licensed to perform?
License #498289 carries C-20 (Warm-Air Heating, Ventilating and Air-Conditioning), plus additional classifications: C38.
Is Mas Service bonded?
Yes. Mas Service carries contractor's bond #792706C for $25,000 through OHIO CASUALTY INSURANCE COMPANY (THE).
Does Mas Service carry workers' compensation insurance?
Yes. Workers' compensation insurance is on file with INSURANCE COMPANY OF THE WEST, with a policy expiration of 03/03/2027.
How long has Mas Service held its contractor license?
License #498289 was originally issued on 09/15/1986, approximately 40 years ago (as of July 2026).
Where is Mas Service located?
Mas Service is based in Antioch, Contra Costa County, CA 94531.