Apartment Renovation at 21 Claremont Avenue, Manhattan
21 CLAREMONT AVENUE, MANHATTAN, 10027 · Morningside Heights
What was permitted
This permit is for an interior renovation of apartment unit 32 at 21 Claremont Avenue in Manhattan's Morningside Heights neighborhood. The scope includes non-structural demolition, followed by the installation of new partitions, ceilings, lighting, and finishes.
The permit was issued on May 20, 2026, with an estimated project cost of $337,375. APOLON CONSTRUCTION CORP is the General Contractor overseeing this interior renovation.
Homeowners in Morningside Heights considering apartment upgrades can look to this permit for an example of interior renovation costs, with this project at 21 Claremont Avenue estimated at over $337,000.
What it cost
Issued
May 20, 2026
Expires
October 4, 2026
License
General Contractor
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Filed by APOLON CONSTRUCTION CORP · 6 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 | 509241371 |
| Work Permit # | M01292461-I1-GC |
| Job Filing Number | — |
| Work Type | General Construction |
| Status | Permit Issued |
| Job Description | INTERIOR RENOVATION TO APARTMENT UNIT 32, 43 NON STRUCTURAL DEMOLITION. INSTALLATION OF NEW PARTITIONS CEILING, LIGHTING AND FINISHES. NO CHANGE TO USE, EGRESS OR OCCUPANCY. NO WORK TO WINDOWS AND FAADE |
| Floor / Unit | Floor Number(s) 3 through 4 |
| Estimated Cost | $337,375 |
| Approved | October 1, 2025 |
| Issued | May 20, 2026 |
| Expires | October 4, 2026 |
| BBL | — |
| BIN | — |
Property Owner
Trustees of Columbia University
Diego Rivera