Updated: Nov 23, 2025
Location
Address
66 Braham Avenue, Amityville, NY, 11701
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Giant Mechanical Systems
Giant Mechanical Systems, 66 Braham Ave, Amityville, NY (Owned by: Joseph Litvaitis) holds a Home Improvement Contractors license and 6 other licenses according to the Nassau County license board.
Their BuildZoom score of 93 ranks in the top 27% of 77,888 New York licensed contractors.
Their license was verified as active when we last checked. If you are thinking of hiring Giant Mechanical Systems, we recommend double-checking their license status with the license board and using our project planner to get competitive quotes.
Giant Mechanical Systems Contact Information
Phone Number: (516) 430-5760
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Address: 66 Braham Avenue, Amityville, NY 11701
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Verified License
BuildZoom confirmed this contractor's license
Giant Mechanical Systems License info
Verified License
| License # | H3603670000 |
| Status | Active |
| County | Nassau County |
| Type | Home Improvement Contractors |
- BuildZoom verified this license was active as of November 2025.
Verify this license's status for Giant Mechanical Systems at the Nassau County Office of Consumer Affairs.
This is a sample of licensing data; click here to access a complete history.
License Not Verified
| License # | 45194 |
| Status | Active |
| County | Suffolk County |
| Type | H H12 - Duct Work |
- When BuildZoom last verified this license, it had an expiration date of November, 2014. Check the current license status of Giant Mechanical Systems with the Suffolk County Department of Consumer Affairs
This is a sample of licensing data; click here to access a complete history.
License Not Verified
| License # | 45509 |
| Status | Active |
| County | Suffolk County |
| Type | Re Re1 - Hvac |
- When BuildZoom last verified this license, it had an expiration date of November, 2014. Check the current license status of Giant Mechanical Systems with the Suffolk County Department of Consumer Affairs
This is a sample of licensing data; click here to access a complete history.
License Not Verified
| License # | 45505 |
| Status | Active |
| County | Suffolk County |
| Type | Rp Rp1 - Hvac |
- When BuildZoom last verified this license, it had an expiration date of November, 2014. Check the current license status of Giant Mechanical Systems with the Suffolk County Department of Consumer Affairs
This is a sample of licensing data; click here to access a complete history.
License Not Verified
| License # | 45510 |
| Status | Active |
| County | Suffolk County |
| Type | Re Re3 - Burner Service |
- When BuildZoom last verified this license, it had an expiration date of November, 2014. Check the current license status of Giant Mechanical Systems with the Suffolk County Department of Consumer Affairs
This is a sample of licensing data; click here to access a complete history.
License Not Verified
| License # | 45286 |
| Status | Active |
| County | Suffolk County |
| Type | Rp Rp9 - Natural Gas |
- When BuildZoom last verified this license, it had an expiration date of November, 2014. Check the current license status of Giant Mechanical Systems with the Suffolk County Department of Consumer Affairs
This is a sample of licensing data; click here to access a complete history.
Inactive License
| License # | H36036700 |
| Status | Inactive |
| County | Nassau County |
| Type | Home Improvement Contractors |
- According to the Nassau County Office of Consumer Affairs, the status of this license was at one point cancelled. However, this information may have changed. If this is your business, please update your license status.
Check this license's status for Giant Mechanical Systems at the Nassau County Office of Consumer Affairs.
This is a sample of licensing data; click here to access a complete history.
93
BuildZoom Score
Giant Mechanical Systems Employees
JL
Joseph A Litvaitis
Member
JL
Joseph Litvaitis
Owner