Milton Coste

Licensed Real Estate Associate Broker

(917) 416-7433

Under Contract – Backup offers may be accepted

829 PARK Avenue #10B
Interested in this property?
Pending For Sale Co-op

$2,850,000

829 PARK Avenue #10B

Lenox Hill, Manhattan

MLS® #RLS20081660

RLS at REBNY

Listing by Brown Harris Stevens Residential Sales LLC

3

Bedrooms

3

Baths

N/A

Sq. Ft.

1909

Year Built

Quick Summary

Bedrooms 3
Bathrooms 3
Year Built 1909
Ownership Co-op
Maintenance $8,434/mo
Neighborhood Lenox Hill
Floor 10 of 12

Property Highlights

  • Climate Control: Other
  • Character: Pre-war building (1909)

Property Details

Type Co-op
Ownership Stock Cooperative
Total Rooms 8
Baths 3 Full
Floor 10 of 12
Cooling Other
Pets Yes
Year Built 1909
Structure Type HighRise
Basement Other
Parcel # 1410-0069-00829-000-000010B
Block/Lot 01410/0069

Listing History

Event Date Price Change
Listed Apr 6, 2026 $2,850,000 -
Currently Jun 1, 2026 $2,850,000 -

Description

High above Park Avenue, featuring soaring ceilings, views of the tree-lined avenue and the iconic Carlyle Hotel through expansive living room windows, and offering three bedrooms (flex four), a private landing, and three bathrooms, apartment 10B embodies the pre-war elegance and grace of a classic Upper East Side duplex. Apartment 10B also provides an open canvas for your imagination to create the home of your dreams.

From the private elevator landing, an entry gallery leads to the sun-drenched corner great room measuring nearly 30 feet, which highlights a wood-burning fireplace, original hardwood floors, and six oversized windows directly over Park Avenue. The 10'3" ceilings-both downstairs and upstairs-lend to the airy, sunny atmosphere of an apartment that feels more like a private home than a Manhattan apartment.

Off the grand living room is a dining area adjacent to a windowed kitchen. Three bedrooms and two full bathrooms are located upstairs. The corner primary bedroom faces west, with a large window overlooking Park Avenue.

Options for new configurations include expanding the kitchen into a large eat-in chef's kitchen, adding a fourth bedroom and a home office in the former downstairs staff rooms, and combining two of the three upstairs bedrooms into a spacious primary suite with a dressing or lounging area.

Built in 1909, this preeminent pre-war co-op features a full-time doorman, a stately high-ceilinged lobby with original marble floors, a live-in resident manager, private storage, and a state-of-the-art fitness center, completely renovated and upgraded in 2024. The building allows pets and 50% financing. There is a 2% flip tax.

Features & Amenities

Interior Features

Building Other

Exterior Features

None

Building Amenities

Elevators Storage

Building Information

Building Data View Compliance & Permits
Total Units 48
Stories 12
Structure HighRise

Financial Details

Maintenance $8,434/mo

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

648

Median Asking Price

$1.31M

Median $/Sqft

$1,367

Avg Days on Market

N/A

New This Week

30

Price Reduced

33%

Sold (30 Days)

46

Median Sale Price

$1.20M

Live data from RLS at REBNY • Updated 6/1/26, 2:17 PM EST

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Location

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829 PARK Avenue #10B, Lenox Hill, New York County

Floor Plans

Floor Plan 1

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 $8,434 per month. Confirm the exact amount with the listing broker before making an offer.

This property has 3 bedrooms and 3 full bathrooms.

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: No Restrictions,Building Pets Allowed Comments:No Restrictions. Contact the listing broker for weight limits or breed restrictions.

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: RLS20081660
First Listed: 4/6/2026
On Market: 4/6/2026
Price Changed: 4/6/2026
Pending Since: 4/29/2026
Contract Date: 4/6/2026

Listing Courtesy of Brown Harris Stevens Residential Sales LLC - Katharine F Tuckerman

Listing Contact: (212) 906-9228

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 6/1/2026 at 6:17 PM UTC

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