What was permitted
A significant general construction project is underway at 809 Madison Avenue in Manhattan's Upper East Side-Carnegie Hill neighborhood. This permit indicates plans to enlarge the existing building both horizontally and vertically, suggesting a major renovation or expansion.
This permit was issued on October 7, 2026, with an estimated project cost of $11,981,218. The work is being managed by CONSTRUCTION MANAGERS * (GC).
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View the official permit record
Tracking number, work description, cost and dates
View the official permit record
Tracking number, work description, cost and dates
| Tracking number | 578110734 |
|---|---|
| Work permit # | M01262427-I1-GC |
| Job filing number | — |
| Work type | General Construction |
| Status | Permit Issued |
| Job description | DevHUB Consultation 7.18.2025 @2pm. Application filed to enlarge building horizontally and vertically. |
| Floor / unit | Cellar, Cellar, Cellar, Floor Number(s) 1, Floor Number(s) 1, Floor Number(s) 2, Floor Number(s) 3, Floor Number(s) 4, Floor Number(s) 5, Floor Number(s) 6, Floor Number(s) 7, Floor Number(s) 8, Floor |
| Estimated cost | $11,981,218 |
| Approved | September 2, 2026 |
| Issued | October 7, 2026 |
| Expires | November 4, 2026 |
| BBL | — |
| BIN | — |
Property owner
Macklowe Properties
Simone Sarcona
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