General Construction for Window Enlargement and Balconies at 4 East 66th Street, Manhattan
4 EAST 66 STREET, Manhattan, 10065 · Upper East Side-Carnegie Hill
What was permitted
This permit details general construction work focused on enlarging windows and creating doors for Juliette balconies at a property on East 66th Street. Such projects can significantly alter a building's facade and interior, offering a benchmark for homeowners considering similar aesthetic and functional upgrades.
With a substantial estimated cost of $2,500,000, this project was issued a permit on July 17, 2026, by SEA-DAR ENTERPRISES, INC. Future structural and mechanical work will be filed separately, indicating a larger scope for this Upper East Side property.
The $2.5 million general construction project at 4 East 66th Street, Manhattan, for window and balcony enhancements highlights significant investment in property upgrades on the Upper East Side.
What it cost
Issued
July 17, 2026
Expires
September 2, 2026
License
General Contractor
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Filed by SEA-DAR ENTERPRISES, INC · 24 permits across 5 neighborhoods
View the official permit record
Tracking number, work description, cost, and dates
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View the official permit record
Tracking number, work description, cost, and dates
| Tracking Number | 170862387 |
| Work Permit # | M01360085-I1-GC |
| Job Filing Number | — |
| Work Type | General Construction |
| Status | Permit Issued |
| Job Description | General Construction work for enlarging windows and crating doors for Juliette balconies. Subsequent structural and mechanical work filed under subsequent documents. |
| Floor / Unit | Floor Number(s) 11 through 11 |
| Estimated Cost | $2,500,000 |
| Approved | May 13, 2026 |
| Issued | July 17, 2026 |
| Expires | September 2, 2026 |
| BBL | — |
| BIN | — |
Property Owner
HEATHER OSBORN