SOLD FOR $4,000,000
Listed at $4,950,000 · Sold 19.2% below asking · Closed November 21, 2025
923 Fifth Avenue #15B
MLS® #RLS11021529
Listing by Sothebys International Realty
2
Bedrooms
2
Baths
1,200
Sq. Ft.
1949
Year Built
Quick Summary
Property Highlights
- Views: City, Park Greenbelt
- Exposure: West facing
- Outdoor Space: Building Terrace, Terrace
Property Details
Listing History
| Event | Date | Price | Change |
|---|---|---|---|
| Listed | Nov 15, 2024 | $5,500,000 | - |
| Currently | Apr 25, 2026 | $4,950,000 | -10.0% |
Description
923 Fifth Avenue is one of the few white-glove condominiums on Fifth Avenue, in the heart of the prestigious Upper East Side. There is no Board Approval required for purchase, and both financing and subletting are allowed. Just as a vivid fancy-colored diamond is intense, Apartment 15B is exceedingly rare. Offered for the first time in 24 years, 15B is in the front of the building, facing Central Park, with a private, setback outdoor patio for the most incredible views. Nestled between 923 Fifth Avenue's two major A and C-lines, the B-line feels like a five-star hotel suite, measuring a spacious 1200 square feet, with a huge oversized primary bedroom. At 923 Fifth, the three Park-facing lines, the A, B, and C lines, are the most valuable and rarely for sale. Most Fifth Avenue architects place the grandest apartments up front, and, all things considered, Apartment 15B would be impossible to duplicate today. For the pied a terre buyer or ex-New Yorker, 15B is a highly desirable alternative to a hotel or club. For co-op down-sizers, it's the perfect white-glove, high-service UES location, and for investors, an enduring and strategic luxury asset. In preparing the property for sale, the owners have restored the apartment to an immaculate "white box" state, with fresh paint and refinished floors. Many original details, such as custom fixtures in both bathrooms, and period built-ins in the second bedroom, were left intact. There are no summer work rules for renovators. There is a large, gracious entry foyer, king-sized primary suite, a secondary bedroom, two full baths, a windowed galley kitchen, original herringbone hardwood floors, thru-wall A/C, and generous, deep storage space throughout. Pets and in-unit washer/dryers are allowed. Located on the corner of East 73rd St and Fifth Avenue, this Lenox Hill location is arguably second to none, with delightful destinations in every direction. In-person showings by appointment are welcomed 11-4pm. The views from 15B are transformational -- seeing is believing! Note: Working Capital Contribution: 2.5% Payable by Purchaser
Features & Amenities
Interior Features
Exterior Features
Appliances
Building Information
Financial Details
About Upper East Side
View All Upper East Side ListingsThe Upper East Side remains the gold standard for classic New York elegance. Known for 'Museum Mile' and its low-traffic, tree-lined streets, the neighborhood offers a refined lifestyle away from the midtown bustle. While famous for its historic cooperatives, the area has seen a recent surge in ultra-luxury new construction condos, particularly along the Second Avenue Subway corridor, making it a top choice for both traditionalists and modern buyers.
Upper East Side Live Market Data
View NeighborhoodActive Listings
340
Median Asking Price
$1.55M
Median $/Sqft
$1,560
Avg Days on Market
N/A
New This Week
30
Price Reduced
26%
Sold (30 Days)
31
Median Sale Price
$1.52M
Live data from RLS at REBNY • Updated 4/25/26, 6:12 AM EST
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923 Fifth Avenue #15B, Upper East Side, New York County
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Floor Plans
Building Information
Official NYC property records for this building
Tax & Assessment
Note: Individual unit taxes may differ. Verify current tax bills with NYC DOF.
Source: NYC PLUTO (Primary Land Use Tax Lot Output), NYC Department of City Planning (data.cityofnewyork.us)
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Listing Data
RLS® at REBNY (Real Estate Board of New York) via Trestle API. Updated in real-time.
Building Data
NYC PLUTO (Primary Land Use Tax Lot Output), NYC Department of City Planning. Updated quarterly.
Market Data
RLS® at REBNY (Real Estate Board of New York). Live data updated in real-time.
Map & Location
OpenStreetMap contributors via Leaflet. Geocoding via Nominatim.
All data is provided for informational purposes only and should be independently verified. See our Data Sources Policy for more information.
Frequently Asked Questions
Common questions about this property
The current listed common charges are $1,721 per month. Confirm the exact amount with the listing broker before making an offer.
The current listed annual property tax is $19,188, or roughly $1,599 per month. Verify the current assessment with your attorney before closing.
This property has 2 bedrooms and 2 full bathrooms.
The listed interior living area is 1,200 square feet. Verify dimensions independently during due diligence.
According to MLS records, the building was constructed in 1949, making it approximately 77 years old.
This listing is a condominium. Buyers receive a deed to their individual unit and own their space outright, subject to condo association rules.
Pets are permitted at this property. Contact the listing broker for weight limits or breed restrictions.
At the current list price of $4,950,000 for 1,200 sq ft, the asking price per square foot is approximately $4,125. This figure is for reference only and may differ from appraised or assessed values.
To schedule a private showing, contact Milton Coste at (917) 416-7433 or mcoste@kwnyc.com. Per REBNY guidelines effective 2025, a Buyer Representation Agreement is required before a buyer's broker can show you properties. You may attend open houses independently without one.
Have a question not answered here?
(917) 416-7433Listing Courtesy of Sothebys International Realty - Gordon T Roberts
Listing Contact: (212) 400-8710
Listing information for certain New York City properties provided courtesy of the Real Estate Board of New York's Residential Listing Service (the "RLS"). The information contained in this listing has not been verified by the RLS and should be verified by the consumer. The listing information provided here is for the consumer's personal, non-commercial use. Retransmission, redistribution or copying of this listing information is strictly prohibited except in connection with a consumer's consideration of the purchase and/or sale of an individual property. This listing information is not verified for authenticity or accuracy and is not guaranteed and may not reflect all real estate activity in the market. ©2026 The Real Estate Board of New York, Inc., all rights reserved. This advertisement does not suggest that the broker has a listing in this property or properties or that any property is currently available.
Broker Commission Disclosure: Broker commissions are not set by law and are fully negotiable.
Buyer Notice: Planning to work with a buyer's broker? A Buyer Representation Agreement is required before your broker can show you properties, per REBNY/UCBA guidelines (effective 2025). You may attend open houses independently without one.
RLS Data display by Keller Williams NYC. Data last updated on 4/25/2026 at 10:12 AM UTC