Mechanical Systems at 1 Madison Avenue, Manhattan
1 MADISON AVENUE, MANHATTAN, 10010 · Midtown South-Flatiron-Union Square
What was permitted
Residents and property owners near 1 Madison Avenue can observe a mechanical systems project involving modifications to the existing HVAC system. This work focuses on minor low-pressure ductwork adjustments as detailed in the filed plans.
The permit for this HVAC work was issued on May 13, 2026, with an estimated project cost of $119,996.8. JT MAGEN & COMPANY INC is listed as the general contractor for this mechanical upgrade.
A nearly $120,000 HVAC system modification project in Midtown South-Flatiron-Union Square was permitted on May 13, 2026.
What it cost
Issued
May 13, 2026
Expires
September 30, 2026
License
General Contractor
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Filed by JT MAGEN & COMPANY INC · 109 permits across 8 neighborhoods
View the official permit record
Tracking number, work description, cost, and dates
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View the official permit record
Tracking number, work description, cost, and dates
| Tracking Number | 347366287 |
| Work Permit # | M01362907-I1-MS |
| Job Filing Number | — |
| Work Type | Mechanical Systems |
| Status | Permit Issued |
| Job Description | Minor low pressure ductwork modification to existing HVAC system as per plans filed herewith. No change in use, egress or occupancy. |
| Floor / Unit | Floor Number(s) 20 through 20 |
| Estimated Cost | $119,997 |
| Approved | April 24, 2026 |
| Issued | May 13, 2026 |
| Expires | September 30, 2026 |
| BBL | — |
| BIN | — |
Property Owner
SL GREEN REALTY CORP
Gianna Pilalis