HVAC System Modifications at 401 West 31st Street, Manhattan
401 WEST 31 STREET, Manhattan, 10001 · Chelsea-Hudson Yards
What was permitted
A permit has been issued for mechanical systems work at 401 West 31st Street in the Chelsea-Hudson Yards neighborhood of Manhattan. This project involves modifications to the existing HVAC system and related piping to accommodate new tenant office space.
The permit was issued on July 6, 2026, with STRUCTURE TONE, LLC listed as the General Contractor. This type of work is common for commercial spaces undergoing tenant fit-outs.
For businesses in Chelsea-Hudson Yards considering office renovations, HVAC system upgrades like those at 401 West 31st Street are a key component of tenant improvements.
What it cost
Issued
July 6, 2026
Expires
December 31, 2026
License
General Contractor
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Filed by STRUCTURE TONE, LLC · 221 permits across 16 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 | 729602157 |
| Work Permit # | M01406455-S1-MS |
| Job Filing Number | — |
| Work Type | Mechanical Systems |
| Status | Permit Issued |
| Job Description | Modifications to existing HVAC system & related piping for new tenant office space. No change in use, egress or occupancy. |
| Floor / Unit | Floor Number(s) 57 through 57 |
| Estimated Cost | Not reported |
| Approved | June 25, 2026 |
| Issued | July 6, 2026 |
| Expires | December 31, 2026 |
| BBL | — |
| BIN | — |
Property Owner
Not Applicable
MICHAEL DELMONT