Location and Projects
Cornerstone New York Construction
Cornerstone New York LLC, 79 Sagamore Rd, Island Park, NY (Owned by: Michael Ott) holds a Home Improvement Contractors license and 4 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 Cornerstone New York LLC, we recommend double-checking their license status with the license board and using our bidding system to get competitive quotes.
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Cornerstone New York LLC Contact Information
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Building Permits by Cornerstone New York LLC
This is a sample of this contractor's permits. Click here to access their complete permit history.
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Cornerstone New York LLC License info
License Not Verified
| License # | H0455460000 |
| Status | Active |
| County | Nassau County |
| Type | Home Improvement Contractors |
- When BuildZoom last verified this license, it had an expiration date of January, 2026. Check the current license status of Cornerstone New York LLC with the Nassau County Office of Consumer Affairs
This is a sample of licensing data; click here to access a complete history.
Verified License
| License # | 2035970-DCA |
| Status | Active |
| State | New York |
| Type | Home Improvement Contractor |
- BuildZoom verified this license was active as of April 2026.
Verify this license's status for Cornerstone New York LLC at the New York Department of Consumer Affairs.
This is a sample of licensing data; click here to access a complete history.
License Not Verified
| License # | 56570 |
| Status | Active |
| County | Suffolk County |
| Type | Home Impovement H99 - Other |
- When BuildZoom last verified this license, it had an expiration date of March, 2018. Check the current license status of Cornerstone New York LLC 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 # | L006709 |
| Status | Inactive |
| Town | Town Of Southampton |
- According to the Town of Southampton Department of Land Management, 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 Cornerstone New York LLC at the Town of Southampton Department of Land Management.
This is a sample of licensing data; click here to access a complete history.
Inactive License
| License # | H04554600 |
| 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 Cornerstone New York LLC at the Nassau County Office of Consumer Affairs.
This is a sample of licensing data; click here to access a complete history.