What was permitted
This permit covers modifications to the existing HVAC system, including duct work and the installation of chiller water air handling units, at 11 Madison Avenue. The project is taking place on the Cellar, 1st floor, and 1st Floor Mezzanine.
The permit was issued on April 17, 2026, with an estimated cost of $990,000. The contractor listed is M & S MECHANICAL SERVICES.
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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 | 208072313 |
|---|---|
| Work permit # | M01334241-I1-MS |
| Job filing number | — |
| Work type | Mechanical Systems |
| Status | Permit Issued |
| Job description | Modifications to the existing HVAC system and associated duct work, and the installation of chiller water air handling units on the Cellar, 1st floor, and 1st Floor Mezzanine, as per plans. No change to use, egress, or occupancy. |
| Floor / unit | Cellar, Floor Number(s) 1 through 1, Mezzanine 1 through 2 |
| Estimated cost | $990,000 |
| Approved | March 6, 2026 |
| Issued | April 17, 2026 |
| Expires | May 29, 2026 |
| BBL | — |
| BIN | — |
Property owner
Sl Green Realty CORP
Gianna Pilalis
Related searches
HVACmechanical systems11 Madison AvenueMidtown SouthFlatironUnion Squarepermit$990,000