Under Contract – Backup offers may be accepted
829 Park Avenue #2D/3D
MLS® #RLS20048454
Listing by Compass
5
Bedrooms
3.5
Baths
2,800
Sq. Ft.
1909
Year Built
Quick Summary
Property Highlights
- Fireplace: 1 fireplace
- Character: Pre-war building (1909)
Property Details
Listing History
| Event | Date | Price | Change |
|---|---|---|---|
| Listed | Sep 13, 2025 | $3,700,000 | - |
| Currently | Jun 9, 2026 | $3,400,000 | -8.1% |
Description
One Of A Kind Park Avenue Residence Step off a private elevator into your serene Park Avenue duplex—a loft-like five-bedroom retreat that blends sophistication with architectural distinction. Originally combined in 2013, the residence was thoughtfully reimagined with all-new windows, plumbing, and electrical, offering a perfect balance of prewar character and modern functionality. A dramatic 20-foot industrial steel staircase anchors the home, creating an airy, open connection between the two levels while keeping living and sleeping areas thoughtfully separated. The double-wide living room, with multiple exposures, is ideal for entertaining, featuring a dining area, an original working marble fireplace, coffered ceilings, and warm hardwood floors. The expansive chef’s kitchen includes dual sinks, a Viking stove, Sub-Zero refrigerator, warming stovetop, and wine/beverage center, complemented by a bright breakfast nook. The main floor also offers a guest bedroom with a full bath, a powder room, and washer/dryer. Upstairs, the primary suite boasts a walk-in closet, shoe closet, and a windowed en-suite bath. A library/bedroom with custom steel-and-glass doors, working marble fireplace, and oversized windows can be combined with the primary suite to create a grand retreat. Two additional bedrooms share a windowed bath and are connected by a versatile den/playroom. Built in 1909, 829 Park Avenue is a full-service prewar cooperative in a prime Upper East Side location. The building features a newly designed fitness center, private storage for each residence, and a live-in resident manager. Financing up to 50% is permitted, and there is a 2% flip tax.
Features & Amenities
Interior Features
Building Amenities
Appliances
Building Information
Financial Details
About Lenox Hill
View All Lenox Hill ListingsLenox Hill occupies a residential section of the Upper East Side, defined by proximity to Central Park, major medical institutions (Memorial Sloan Kettering, Weill Cornell, Lenox Hill Hospital), and the Madison Avenue retail corridor. Housing stock ranges from large pre-war cooperatives to modern condominiums with East River and skyline views.
Lenox Hill Live Market Data
View NeighborhoodActive Listings
631
Median Asking Price
$1.35M
Median $/Sqft
$1,329
Avg Days on Market
N/A
New This Week
14
Price Reduced
33%
Sold (30 Days)
63
Median Sale Price
$1.20M
Live data from RLS at REBNY • Updated 6/8/26, 8:50 PM EST
Similar Listings in Lenox Hill
View All1355 1ST Avenue #25
Condo • RLS #RLS20091796
405 E 63RD Street #12CE
Co-op • RLS #RLS20075965
Active
176 E 71ST Street #2A
Co-op • RLS #RLS20096354
440 E 62nd Street #17BC
Co-op • RLS #RLS20082776
156 E 79TH Street #14C
Co-op • RLS #RLS20070674
401 E 60th Street #4ABC
Condo • RLS #RLS20085871
Browse More NYC Properties
In This Neighborhood
By Property Type
By Borough
Location
829 Park Avenue #2D/3D, Lenox Hill, New York County
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)
Want help estimating ownership costs or understanding building compliance? Let's discuss
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 monthly maintenance are $10,200 per month. Confirm the exact amount with the listing broker before making an offer.
The current listed annual property tax is $0, or roughly $0 per month. Verify the current assessment with your attorney before closing.
This property has 5 bedrooms and 3 full bathrooms and 1 half bathroom.
The listed interior living area is 2,800 square feet. Verify dimensions independently during due diligence.
According to MLS records, the building was constructed in 1909, making it approximately 117 years old.
This listing is a co-op (stock cooperative). Buyers purchase shares in a corporation rather than real property, and the board must approve all sales.
Pets are permitted at this property. Contact the listing broker for weight limits or breed restrictions.
At the current list price of $3,400,000 for 2,800 sq ft, the asking price per square foot is approximately $1,214. 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 [email protected]. 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 Compass - Lauren Fernandes
Listing Contact: (914) 830-9920
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 6/9/2026 at 12:50 AM UTC