Office Construction at 1 Madison Avenue, Manhattan
1 MADISON AVENUE, MANHATTAN, 10010 · Midtown South-Flatiron-Union Square
What was permitted
This permit details a significant general construction project involving the removal of existing workstations and the construction of a new office space at 1 Madison Avenue in Manhattan. This type of work is common in commercial buildings and is designed to reconfigure interior layouts without altering the building's fundamental use or occupancy.
The permit for this project was issued on May 12, 2026, with an estimated cost of $599,999.4. JT MAGEN & COMPANY INC is listed as the general contractor for this extensive office renovation.
Homeowners and property owners in Midtown South-Flatiron-Union Square can note the substantial estimated cost of $599,999.4 for this office build-out, indicating a large-scale commercial interior project.
What it cost
Issued
May 12, 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 | 372923239 |
| Work Permit # | M01362879-I1-GC |
| Job Filing Number | — |
| Work Type | General Construction |
| Status | Permit Issued |
| Job Description | Removing of existing workstations and constructing an office as per plans filed herewith. No change in use, egress, or occupancy. |
| Floor / Unit | Floor Number(s) 20 through 20 |
| Estimated Cost | $599,999 |
| Approved | April 10, 2026 |
| Issued | May 12, 2026 |
| Expires | September 30, 2026 |
| BBL | — |
| BIN | — |
Property Owner
SL GREEN REALTY CORP
Gianna Pilalis