MAS SERVICE
C20| C38 — ANTIOCH, California
DBA: JB MECHANICAL INC
Verify with the state before signing.
License expired 06/30/2026 and has not been renewed. If the contractor tells you they've renewed, confirm with the state board before signing a contract. (Retrieved from California; filings after retrieval may not be reflected.) Covers C20| C38 in ANTIOCH.
- Expired 06/30/2026
- Bonded $25000
- WC on file
- No complaints
California state licensing board · retrieved 03/03/2026
Retrieved 03/03/2026 — renewals or status changes filed after this date may not be reflected.
The record
License
- Number
- 498289
- Status
- active
- Issued
- 09/15/1986
- Expires
- 06/30/2026
Coverage
- Contractor bond
- $25,000
- Bond company
- OHIO CASUALTY INSURANCE COMPANY (THE)
- Workers comp
- INSURANCE COMPANY OF THE WEST
- Wage bond
- $0
Business
- Owner
- JB MECHANICAL INC DBA MAS SERVICE Is this you? →
- County
- Contra Costa
History
- Complaints (3 yrs)
- 0
- Disciplinary
- None on file
- Permits on file
- 0
- Pending actions
- None
Licensed to do
- C20| C38 — C20| C38
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Claim this profile →Disciplinary & complaints
No disciplinary actions on file.
Building permits
No building permit records found.
Status history
- Inactivated
- 10/28/1998
- Reactivated
- 06/05/2000
- Last updated
- 03/03/2026
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Official record
Source of record: Contractors State License Board (CSLB). Raw record ID: #498289
California state licensing board · retrieved 03/03/2026