HVAC System Modifications at 11 Madison Avenue
11 MADISON AVENUE, MANHATTAN, 10010 · Midtown South-Flatiron-Union Square
Estimated Project Cost
$0
Mechanical Systems
Issued
April 2, 2026
Expires
December 31, 2026
License
General Contractor
About This Project
This permit covers modifications to an existing HVAC system at 11 Madison Avenue in the Midtown South-Flatiron-Union Square area. The project is based on filed plans and does not change the use, egress, or occupancy.
The permit was issued on April 2, 2026, with an estimated cost of $149,460. STRUCTURE TONE, LLC is the general contractor for this project.
What This Means For You
If you're in the Midtown South-Flatiron-Union Square area, this $149,460 HVAC project could be a sign of building improvements nearby.
The Business That Did This Work
STRUCTURE TONE, LLC
General Contractor · License #002660
330 WEST 34TH STREET
75 permits filed · 10 neighborhoods
Permit Details
| Tracking Number | 179742484 |
| Work Permit # | M01360860-I1-MS |
| Job Filing Number | — |
| Work Type | Mechanical Systems |
| Status | Permit Issued |
| Job Description | Modifications to existing HVAC System as per plans filed herewith. No change in use, egress, or occupancy. |
| Floor / Unit | Floor Number(s) 9 through 9 |
| Estimated Cost | $149,460 |
| Approved | April 2, 2026 |
| Issued | April 2, 2026 |
| Expires | December 31, 2026 |
| BBL | — |
| BIN | — |
Property Owner
SL GREEN REALTY CORP
Gianna Pilalis
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