523 EAST 70 STREET, MANHATTAN, 10021 · Upper East Side-Lenox Hill-Roosevelt Island
Homeowners on the Upper East Side may be interested in the significant costs associated with facade alterations, particularly those related to Local Law 11 (LL11) work. This permit covers structural changes to a building's exterior.
This structural permit for facade alterations was issued on March 31, 2026, with a substantial estimated cost of $4,495,218.9. THE GRENADIER CORPORATION (GC) is the contractor undertaking this project.
Major facade alterations for LL11 compliance on the Upper East Side, Manhattan, came with a significant price tag of nearly $4.5 million.
Issued
March 31, 2026
Expires
August 15, 2026
License
General Contractor
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Filed by THE GRENADIER CORPORATION · 7 permits across 5 neighborhoods
View the official permit record
Tracking number, work description, cost, and dates
| Tracking Number | 618468654 |
| Work Permit # | M01144549-I1-ST |
| Job Filing Number | — |
| Work Type | Structural |
| Status | Permit Issued |
| Job Description | Annex Fac: Facade alterations to accommodate LL11 work as per plans. No change to use, egress or occupancy. |
| Floor / Unit | Facade |
| Estimated Cost | $4,495,219 |
| Approved | January 24, 2025 |
| Issued | March 31, 2026 |
NEW YORK PRESBYTERIAN HOSPITAL
BENEDICT CIFERRI
| Expires |
| August 15, 2026 |
| BBL | — |
| BIN | — |
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