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Mechanical SystemsManhattanPermit issued

HVAC System Upgrades at 401 West 31st Street, Manhattan

401 WEST 31 STREET, Manhattan, 10001 · Chelsea-Hudson Yards

Winston

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Reported project cost

$1,170,132

As declared on the permit filing. Mechanical Systems.

Issued
May 15, 2026
Expires
March 18, 2027
License
General Contractor

What was permitted

Homeowners in Chelsea-Hudson Yards can see the significant investment involved in upgrading mechanical systems. This permit covers modifications to an existing HVAC system, including the installation of new air conditioning units, ensuring comfort and efficiency for the building.

This project, with an estimated cost of $1,170,132, was issued on May 15, 2026, by HARBOUR MECHANICAL CORP. The permit indicates no changes to the building's use, egress, or occupancy.

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View the official permit record

Tracking number, work description, cost and dates

Tracking number373135929
Work permit #M01347832-S1-MS
Job filing number—
Work typeMechanical Systems
StatusPermit Issued
Job descriptionModifications to existing HVAC system & related piping including installation of AC units. No change in use, egress or occupancy.
Floor / unitFloor Number(s) 6 through 6
Estimated cost$1,170,132
ApprovedMarch 18, 2026
IssuedMay 15, 2026
ExpiresMarch 18, 2027
BBL—
BIN—

Property owner

Not Applicable

Michael Delmont

Related searches

HVACmechanical systemsChelsea-Hudson YardsManhattanbuilding permitlarge project cost