What was permitted
Significant mechanical system upgrades are underway at 1091 Amsterdam Avenue in Manhattan's Morningside Heights neighborhood. This project involves modifications for an Air Handling Unit (AHU) replacement, a critical component for building climate control and air quality.
The permit for this extensive mechanical work was issued on June 12, 2026, with a substantial estimated project cost of $4,734,800. J T & T AIR CONDITIONING (GC) is the contractor responsible for this complex undertaking, which does not involve changes to the building's use, egress, or occupancy.
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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 | 152058205 |
|---|---|
| Work permit # | M01184318-I1-MS |
| Job filing number | — |
| Work type | Mechanical Systems |
| Status | Permit Issued |
| Job description | Herewith filing mechanical modifications for MSM S&R AHU Replacement Project. No change in use, egress, or occupancy. |
| Floor / unit | Cellar, Floor Number(s) 14 through 15, Floor Number(s) 1 through 1 |
| Estimated cost | $4,734,800 |
| Approved | March 31, 2025 |
| Issued | June 12, 2026 |
| Expires | August 24, 2026 |
| BBL | — |
| BIN | — |
Property owner
Mount Sinai Health System
Colin Barrett
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