Updated: Jun 23, 2026
Location
Address
4 Ross Lane Mt, Mount Sinai, NY, 11766
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George Grolz Seamless Gutters & Leaders Construction
George Grolz Seamless Gutters & Leaders, 4 Ross Lane Mt, Sinai, NY (Owned by: George Grolz Iii) holds a Home Improvement Contractors license and 7 other licenses according to the Nassau County license board.
Their BuildZoom score of 90 indicates that they are licensed or registered but we do not have additional information about them.
Their license was verified as active when we last checked. If you are thinking of hiring George Grolz Seamless Gutters & Leaders, we recommend double-checking their license status with the license board and using our project planner to get competitive quotes.
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George Grolz Seamless Gutters & Leaders Contact Information
Phone Number: (516) 783-4439
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Address: 4 Ross Lane Mt, Sinai, NY 11766
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Verified License
BuildZoom confirmed this contractor's license
George Grolz Seamless Gutters & Leaders License info
Verified License
| License # | H2708760000 |
| 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 George Grolz Seamless Gutters & Leaders 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 # | H2708760000 |
| Status | Active |
| County | Nassau County |
| Type | Home Improvement Contractors |
- When BuildZoom last verified this license, it had an expiration date of October, 2025. Check the current license status of George Grolz Seamless Gutters & Leaders with 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 # | H2708760000 |
| Status | Active |
| County | Nassau County |
| Type | Home Improvement Contractors |
- When BuildZoom last verified this license, it had an expiration date of October, 2025. Check the current license status of George Grolz Seamless Gutters & Leaders with 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 # | 38540 |
| Status | Active |
| County | Suffolk County |
| Type | H H99 - Other |
- When BuildZoom last verified this license, it had an expiration date of October, 2015. Check the current license status of George Grolz Seamless Gutters & Leaders 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 # | NAT-50729-3 |
| Status | Inactive |
| Nation | Environmental Protection Agency |
| Type | Renovation |
- According to the United States Environmental Protection Agency, 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 George Grolz Seamless Gutters & Leaders at the United States Environmental Protection Agency.
This is a sample of licensing data; click here to access a complete history.
Inactive License
| License # | H27087600 |
| 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 George Grolz Seamless Gutters & Leaders at the Nassau County Office of Consumer Affairs.
This is a sample of licensing data; click here to access a complete history.
Inactive License
| License # | NAT-50729-2 |
| Status | Inactive |
| Nation | Environmental Protection Agency |
| Type | Renovation |
- According to the United States Environmental Protection Agency, 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 George Grolz Seamless Gutters & Leaders at the United States Environmental Protection Agency.
This is a sample of licensing data; click here to access a complete history.
Inactive License
| License # | 1354815-DCA |
| Status | Inactive |
| State | New York |
| Type | Home Improvement Contractor |
- According to the New York Department 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 George Grolz Seamless Gutters & Leaders at the New York Department of Consumer Affairs.
This is a sample of licensing data; click here to access a complete history.
90
BuildZoom Score
George Grolz Seamless Gutters & Leaders Employees
GI
George C Grolz Iii
Owner
GI
George Grolz Iii
Owner