Milton Coste

Licensed Real Estate Associate Broker

(917) 416-7433

Under Contract – Backup offers may be accepted

829 Park Avenue #2D/3D
Interested in this property?
Pending For Sale Co-op

$3,400,000

$1,214 per sq ft

829 Park Avenue #2D/3D

Lenox Hill, Manhattan

MLS® #RLS20048454

RLS at REBNY

Listing by Compass

5

Bedrooms

3.5

Baths

2,800

Sq. Ft.

1909

Year Built

Quick Summary

Bedrooms 5
Bathrooms 4 full, 1 half
Living Area 2,800 sq ft
Year Built 1909
Ownership Co-op
Maintenance $10,200/mo
Neighborhood Lenox Hill
Floor 1 of 12

Property Highlights

  • Fireplace: 1 fireplace
  • Character: Pre-war building (1909)

Property Details

Type Co-op
Ownership Stock Cooperative
Total Rooms 10
Baths 3 Full, 1 Half
Floor 1 of 12
Pets Yes, CatsOk, DogsOk
Year Built 1909
Living Area 2,800 sq ft
Structure Type MultiFamily
Flooring Hardwood
Furnished Unfurnished
Block/Lot 01410/0069

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

Walk In Closets Building Washer Dryer Install Allowed Common On Floor Common Area Flooring: Hardwood Fireplace (1)

Building Amenities

Bike Storage Elevators Fitness Center

Appliances

Gas Cooktop Gas Oven

Building Information

Building Data View Compliance & Permits
Total Units 52
Stories 12
Structure MultiFamily

Financial Details

Maintenance $10,200/mo
Original Price $3,700,000
Previous Price $3,700,000

Lenox 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 Neighborhood

Active 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

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Location

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829 Park Avenue #2D/3D, Lenox Hill, New York County

Floor Plans

Floor Plan 1
Floor Plan 2

Building Information

Official NYC property records for this building

1911
Year Built
115 years old
12
Floors
41
Residential Units
R10
Zoning District
Elevator Apartments Historic District: Upper East Side Historic District

Tax & Assessment

Assessed Value: $16,022,700
Land Value: $2,965,500
Exemptions: $40,580

Note: Individual unit taxes may differ. Verify current tax bills with NYC DOF.

Lot Area: 11,716 SF
Building Area: 103,360 SF
Built FAR: 8.82
Allowed FAR: 10

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

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) 416-7433
MLS® ID: RLS20048454
First Listed: 9/13/2025
On Market: 9/13/2025
Price Changed: 10/27/2025
Pending Since: 3/30/2026
Contract Date: 7/1/2025

Listing 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 at REBNY

RLS Data display by Keller Williams NYC. Data last updated on 6/9/2026 at 12:50 AM UTC

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