Sprinkler Modifications at 350 Fifth Avenue, Manhattan
350 FIFTH AVENUE, MANHATTAN, 10118 · Midtown South-Flatiron-Union Square
Estimated Project Cost
$0
Sprinklers
Issued
April 10, 2026
Expires
May 15, 2026
License
Fire Suppression Contractor
About This Project
This permit details sprinkler modifications on the 40th floor of a commercial building located at 350 Fifth Avenue in Manhattan's Midtown South-Flatiron-Union Square neighborhood. Homeowners and property owners can use this information to understand the costs associated with significant building system upgrades.
The permit was issued on April 10, 2026, with an estimated cost of $145,000. DENKO MECHANICAL INC is the contractor for this project, which involves no change in the building's use, egress, or occupancy.
What This Means For You
A $145,000 sprinkler modification project on the 40th floor of 350 Fifth Avenue provides insight into the cost of commercial building system upgrades in Midtown South.
The Business That Did This Work
DENKO MECHANICAL INC
Fire Suppression Contractor · License #000130
461 WEST 261 STREET
9 permits filed · 4 neighborhoods
Permit Details
| Tracking Number | 409803390 |
| Work Permit # | M01355978-I1-EW-SP |
| Job Filing Number | — |
| Work Type | Sprinklers |
| Status | Permit Issued |
| Job Description | Sprinkler modifications taking place on the 40th Floor as per plans filed herewith. No change in Use, Egress or Occupancy. |
| Floor / Unit | Floor Number(s) 040 through 040 |
| Estimated Cost | $145,000 |
| Approved | March 11, 2026 |
| Issued | April 10, 2026 |
| Expires | May 15, 2026 |
| BBL | — |
| BIN | — |
Property Owner
Not Applicable
Andrew Woolf
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