What was permitted
A significant mechanical systems project is underway at 809 Madison Avenue in Manhattan's Upper East Side-Carnegie Hill neighborhood. This work is associated with a horizontal and vertical enlargement of the property, indicating a substantial renovation or expansion.
The permit for this project was issued on October 5, 2026, and has a reported cost of $2,114,000. CM AND ASSOCIATES CONST (GC) is the general contractor overseeing this extensive mechanical systems installation.
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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 | 723472051 |
|---|---|
| Work permit # | M01262427-S3-MS |
| Job filing number | — |
| Work type | Mechanical Systems |
| Status | Permit Issued |
| Job description | DevHUB Consultation 7.18.2025 @2pm. Application filed for mechanical work associated with horizontal and vertical enlargement. |
| Floor / unit | Cellar-SO-5601-M01262427-I1, Cellar-SO-7530-M01262427-I1, Floor Number(s)-3-SO-8211-M01262427-I1, Floor Number(s)-4-SO-2961-M01262427-I1, Floor Number(s)-5-SO-5405-M01262427-I1, Floor Number(s)-6-SO-3 |
| Estimated cost | $2,114,000 |
| Approved | September 29, 2026 |
| Issued | October 5, 2026 |
| Expires | February 12, 2027 |
| BBL | — |
| BIN | — |
Property owner
Macklowe Properties
Simone Sarcona
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