614 WEST 146 STREET, Manhattan, 10031 · Hamilton Heights-Sugar Hill
This project involves a significant rear enlargement of an existing building, adding approximately 800 square feet to the property located in the Hamilton Heights-Sugar Hill neighborhood of Manhattan. Interior renovations are being handled under a separate application.
The permit for this structural enlargement was issued on July 27, 2026, with an estimated project cost of $160,000. ON SITE NYC INC is the General Contractor for this expansion, which does not alter the building's use, egress, or occupancy.
Homeowners in Hamilton Heights-Sugar Hill considering building expansions should note that a rear enlargement of 800 SF can cost around $160,000, requiring separate permits for interior work.
Issued
July 27, 2026
Expires
July 26, 2027
License
General Contractor
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Filed by ON SITE NYC INC · 20 permits across 5 neighborhoods
View the official permit record
Tracking number, work description, cost, and dates
| Tracking Number | 690309850 |
| Work Permit # | M01314558-I1-GC |
| Job Filing Number | — |
| Work Type | General Construction |
| Status | Permit Issued |
| Job Description | Propose rear enlargement (approx. 800 SF) to existing building. Interior renovation under separate Alt-2 application (Job# M01228024-l1).No overlap in scope. |
| Floor / Unit | Cellar, Basement, Floor Number(s) 1, Floor Number(s) 2, Floor Number(s) 3, Floor Number(s) 4 |
| Estimated Cost | $160,000 |
| Approved | December 11, 2025 |
| Issued |
Not Applicable
Jungeun Park
| July 27, 2026 |
| Expires | July 26, 2027 |
| BBL | — |
| BIN | — |
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