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.
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View the official permit record
Tracking number, work description, cost and dates
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
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