Mechanical Systems Installation at 111 Eighth Avenue, Manhattan
111 EIGHTH AVENUE, Manhattan, 10011 · Chelsea-Hudson Yards
What was permitted
Homeowners in Chelsea-Hudson Yards can see the costs associated with significant mechanical system upgrades. This project involves the installation of a new air handling unit and modifications to existing ductwork and piping, indicating a substantial investment in a commercial or large residential building's infrastructure.
This permit was issued on July 15, 2026, for a project with an estimated cost of $706,932.9. BENCHMARK BUILDERS LLC is listed as the General Contractor for this extensive mechanical work.
A large-scale mechanical system upgrade at 111 Eighth Avenue in Chelsea-Hudson Yards was permitted, with an estimated project cost exceeding $700,000.
What it cost
Issued
July 15, 2026
Expires
September 30, 2026
License
General Contractor
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Filed by BENCHMARK BUILDERS LLC · 37 permits across 10 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 | 428893662 |
| Work Permit # | M01405264-S1-MS |
| Job Filing Number | — |
| Work Type | Mechanical Systems |
| Status | Permit Issued |
| Job Description | Installation of air handling unit, additions and modifications of associated ducts and piping as per plans filed herewith. |
| Floor / Unit | Floor Number(s) 16 through 16 |
| Estimated Cost | $706,933 |
| Approved | June 18, 2026 |
| Issued | July 15, 2026 |
| Expires | September 30, 2026 |
| BBL | — |
| BIN | — |
Property Owner
Elyse Santic