Updated: May 03, 2026
Location
Address
3987 FIRST ST STE A, Livermore, CA, 94551
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M&a Mechanical Service LLC
M&a Mechanical Service LLC, 3987 First St, Livermore, CA (Employee: Serbio Tulio Melgar) holds a Warm Air Heating, Ventilating And Air Conditioning, Sheet Metal license according to the California license board.
Their BuildZoom score of 95 ranks in the top 22% of 336,931 California licensed contractors.
Their license was verified as active when we last checked. If you are thinking of hiring M&a Mechanical Service LLC, we recommend double-checking their license status with the license board and using our project planner to get competitive quotes.
M&a Mechanical Service LLC Contact Information
Phone Number: (925) 583-5088
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Address: 3987 FIRST ST STE A, Livermore, CA 94551
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Verified License
BuildZoom confirmed this contractor's license
M&a Mechanical Service LLC License info
Verified License
| License # | 1141566 |
| Status | Active |
| State | California |
| Type | Warm Air Heating, Ventilating And Air Conditioning, Sheet Metal |
| Date Issued | 08-05-2025 |
| Business Type | Ltd Liability |
- BuildZoom verified this license was active as of May 2026.
Verify this license's status for M&a Mechanical Service LLC at the California Contractors State License Board.
This is a sample of licensing data; click here to access a complete history.
95
BuildZoom Score
Insured
| Insurer | Cumis Specialty Insurance Company Inc |
| Insured up to | $2,000,000 |
Bonded
| Bonded Agent | Merchants Bonding Company (Mutual) |
| Bond Value | $25,000 |
Insured
| Workers Comp Provider | State Compensation Insurance Fund |
M&a Mechanical Service LLC Employees
SM
Serbio Tulio Melgar
Rmg