General Construction at 42 West 70th Street, Manhattan
42 WEST 70 STREET, MANHATTAN, 10023 · Upper West Side-Lincoln Square
What was permitted
A significant general construction project is underway at 42 West 70th Street in Manhattan, involving the conversion of a 5-story plus cellar townhouse from a 6-family dwelling to a single-family residence. This extensive renovation will affect the entire structure from cellar to roof.
The permit, issued on June 17, 2026, has an estimated project cost of $1,040,500 and is managed by LWS CONSTRUCTION INC. Subsequent filings will address structural, fire, egress, plumbing, and mechanical systems, aiming for a new Certificate of Occupancy.
Homeowners on the Upper West Side considering major renovations should note that converting multi-family units to single-family homes, like at 42 West 70th Street, can involve substantial costs exceeding $1 million.
What it cost
Issued
June 17, 2026
Expires
September 17, 2026
License
General Contractor
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Filed by LWS CONSTRUCTION INC · 7 permits across 2 neighborhoods
View the official permit record
Tracking number, work description, cost, and dates
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View the official permit record
Tracking number, work description, cost, and dates
| Tracking Number | 634787978 |
| Work Permit # | M00533755-I1-GC |
| Job Filing Number | — |
| Work Type | General Construction |
| Status | Permit Issued |
| Job Description | Proposed general construction work at cellar thru roof of existing 5-story and cellar townhouse. Convert from 6-family to 1-family. STR, FO, EA, SOE, PL, SP & MS to be filed subsequently. Obtain new Certificate of Occupancy. |
| Floor / Unit | Cellar, Basement, Floor Number(s) 1, Floor Number(s) 2, Floor Number(s) 3, Floor Number(s) 4, Roof |
| Estimated Cost | $1,040,500 |
| Approved | May 14, 2024 |
| Issued | June 17, 2026 |
| Expires | September 17, 2026 |
| BBL | — |
| BIN | — |
Property Owner
CREH70 LLC
BING ZHAO