What was permitted
This project involves the conversion of an existing two-family dwelling into a single-family home on the Upper West Side. The scope includes both vertical and horizontal enlargement of the property.
The permit was issued on October 30, 2026, with a substantial estimated project cost of $752,360. TRIOST PROPERTIES LLC is the general contractor managing this extensive renovation.
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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 | 334421959 |
|---|---|
| Work permit # | M01338237-I1-GC |
| Job filing number | — |
| Work type | General Construction |
| Status | Permit Issued |
| Job description | ALTERATION-CO TO CONVERT EXISTING 2-FAMILY DWELLING INTO 1-FAMILY DWELLING. VERTICAL AND HORIZONTAL ENLARGEMENT PROPOSED. |
| Floor / unit | Cellar, Basement, Floor Number(s) 1, Floor Number(s) 2, Floor Number(s) 3, Floor Number(s) 4, Roof |
| Estimated cost | $752,360 |
| Approved | August 25, 2026 |
| Issued | October 30, 2026 |
| Expires | March 29, 2027 |
| BBL | — |
| BIN | — |
Property owner
Pr
Jonathan Ostrow
Related searches
general constructiondwelling conversionUpper West SideManhattanNYC building permit$752,360 project cost