What was permitted
Homeowners on the Upper East Side may be interested in general construction work underway at 425 East 67 Street. This project focuses on the 3rd floor, identified as 'Theranostic Haupt', with no changes to egress, use, or occupancy.
This general construction permit was issued on August 17, 2026, with a significant estimated project cost of $725,000. JGN CONSTRUCTION CORP is the general contractor managing this project.
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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 | 414454758 |
|---|---|
| Work permit # | M01429087-I1-GC |
| Job filing number | — |
| Work type | General Construction |
| Status | Permit Issued |
| Job description | Filing herewith general construction on the 3rd floor - (Theranostic Haupt) No change in egress, use, or occupancy. |
| Floor / unit | Floor Number(s) 3 through 3 |
| Estimated cost | $725,000 |
| Approved | July 22, 2026 |
| Issued | August 17, 2026 |
| Expires | December 27, 2026 |
| BBL | — |
| BIN | — |
Property owner
Memorial Sloan Kettering
L Ryan Kiefer
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