Major Plumbing Renovation at 424 West 33 Street, Manhattan
424 WEST 33 STREET, MANHATTAN, 10001 · Chelsea-Hudson Yards
What was permitted
Homeowners in Chelsea-Hudson Yards may notice extensive plumbing work underway at 424 West 33 Street. This project involves significant upgrades to the building's systems, as it's being partially converted from office space to residential units.
This permit was issued on May 4, 2026, with an estimated project cost of $2,601,000. The work is being managed by DEMAR PLUMBING CORP.
A substantial $2.6 million plumbing project is underway in Chelsea-Hudson Yards, indicating a major building conversion that could impact local utilities.
What it cost
Issued
May 4, 2026
Expires
June 1, 2026
License
Master Plumber
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Filed by DEMAR PLUMBING CORP · 9 permits across 3 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 | 403346495 |
| Work Permit # | M01188248-S2-PL |
| Job Filing Number | — |
| Work Type | Plumbing |
| Status | Permit Issued |
| Job Description | Plumbing work associated with Alt-CO to partially convert existing office building to residential use. |
| Floor / Unit | Cellar, Floor Number(s) 1 through 13, Roof |
| Estimated Cost | $2,601,000 |
| Approved | December 5, 2025 |
| Issued | May 4, 2026 |
| Expires | June 1, 2026 |
| BBL | — |
| BIN | — |
Property Owner
Not Applicable
ERNESTO BACALZO