What was permitted
Homeowners in Chelsea-Hudson Yards may be interested in this general construction project at 408 West 21 Street. The work involves installing a self-contained stormwater system with a detention tank in an interior courtyard, without connecting to city utilities.
This permit was issued on May 7, 2026, with an estimated project cost of $2,250,000. The contractor for this significant undertaking is CONSIGLI CONSTRUCTION CO.
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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 | 434660233 |
|---|---|
| Work permit # | M01354780-I1-GC |
| Job filing number | — |
| Work type | General Construction |
| Status | Permit Issued |
| Job description | SHERRED HALL - INSTALLATION OF A SELF-CONTAINED STORM WATER SYSTEM WITH DETENTION TANK IN THE OPEN SPACE OF THE INTERIOR COURTYARD. THERE IS NO CONNECTION TO THE CITY WATER SUPPLY OR TO THE CITY STORM WATER SYSTEM. NO CHANGE IN USE, EGRESS, OR OCCUPANCY. |
| Floor / unit | Open Space |
| Estimated cost | $2,250,000 |
| Approved | May 1, 2026 |
| Issued | May 7, 2026 |
| Expires | December 30, 2026 |
| BBL | — |
| BIN | — |
Property owner
Vanderbilt University
Matthew Riethmiller
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