Milton Coste

Licensed Real Estate Associate Broker

(917) 416-7433
660 PARK Avenue #7THFLOOR

For Sale · Listing by Coldwell Banker Warburg

660 PARK Avenue #7THFLOOR

Lenox Hill, Manhattan

$14,000,000

Interested in this property?
Active For Sale Co-op

$14,000,000

$2,979 per sq ft

660 PARK Avenue #7THFLOOR

Lenox Hill, Manhattan

MLS® #RLS20114125

RLS at REBNY

Listing by Coldwell Banker Warburg

3
Bedrooms
4.5
Baths
4,700
Sq. Ft.
1926
Year Built

Quick Summary

Bedrooms 3
Bathrooms 5 full, 1 half
Living Area 4,700 sq ft
Year Built 1926
Ownership Co-op
Maintenance $14,232/mo
Neighborhood Lenox Hill
Floor 7 of 14

Property Highlights

  • Views: City
  • Fireplace: 2 fireplaces
  • Climate Control: Other

Property Details

Type Co-op
Ownership Stock Cooperative
Total Rooms 9
Baths 4 Full, 1 Half
Floor 7 of 14
View City
Cooling Other
Pets Yes
Year Built 1926
Living Area 4,700 sq ft
Structure Type HighRise
Basement Other
Block/Lot 01382/0036

Listing History

Event Date Price Change
Listed Sep 10, 2026 $14,000,000 -
Currently Sep 11, 2026 $14,000,000 -

Description

Spanning the entire seventh floor of one of Park Avenue's most distinguished white-glove cooperatives, this magnificent residence unfolds with a sense of quiet grandeur, defined by its gracious proportions, dazzling light and superb layout. A private elevator landing opens to a gracious twenty-five-foot gallery, leading to a splendid enfilade of entertaining rooms overlooking Park Avenue. Extending approximately 90 feet along the avenue, these rooms include the grand Living Room, handsome Library and the corner formal Dining Room. A Powder Room is off the library. There are wood-burning fireplaces with exquisite mantles in the living room and the library. The exceptionally large windows and ten-plus-foot ceilings enhance the sense of sophistication and elegance throughout. The meticulously designed chef's kitchen is expansive and inviting, with six windows, a large center island, custom cabinetry, and an eat-in area perfectly situated below a wall of windows. Well-suited for a serious chef and larger-scale entertaining, the kitchen is equipped with two Viking ovens, a Miele cooktop, two Miele dishwashers, two warming drawers, two sinks, and a Sub-Zero refrigerator. A separate butler's pantry provides extra storage. A hallway off the kitchen is lined with extra closets and leads to the large staff room and laundry room. The private quarters are set off a wide hallway. Originally two bedrooms, the huge corner primary suite faces Park Avenue and south with beautiful views down the avenue. There is a large dressing area and walk-in closets. The marble-clad primary bathroom is very large and sunny. Two additional bedrooms are generously proportioned, each with an ensuite bathroom and ample closet space. A separate staff room on the ground floor and two private storage rooms transfer with the apartment. There is through-wall air conditioning throughout. Completed in 1926, 660 Park Avenue is a sought-after cooperative comprising twelve full-floor residences. The building offers impeccable service including doormen, porters and a resident manager. Financing is not permitted. There is a 2% flip tax payable by the buyer.

Features & Amenities

Interior Features

Building Other Fireplace (2)

Exterior Features

None

Building Information

Building Data View Compliance & Permits
Total Units 12
Stories 14
Structure HighRise

Financial Details

Maintenance $14,232/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

479

Median Asking Price

$1.32M

Median $/Sqft

$1,500

Avg Days on Market

N/A

New This Week

80

Price Reduced

32%

Sold (30 Days)

84

Median Sale Price

$1.32M

Live data from RLS at REBNY • Updated 9/11/26, 6:49 AM EST

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Location

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660 PARK Avenue #7THFLOOR, Lenox Hill, New York County

Floor Plans

Floor Plan 1

Building Information

Official NYC property records for this building

1927
Year Built
99 years old
14
Floors
12
Residential Units
R10
Zoning District
Elevator Apartments Historic District: Upper East Side Historic District

Tax & Assessment

Assessed Value: $7,397,100
Land Value: $1,440,000
Exemptions: $0

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

Lot Area: 6,025 SF
Building Area: 62,935 SF
Built FAR: 10.45
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 $14,232 per month. Confirm the exact amount with Milton Coste before making an offer.

This property has 3 bedrooms and 4 full bathrooms and 1 half bathroom.

The listed interior living area is 4,700 square feet. Verify dimensions independently during due diligence.

According to MLS records, the building was constructed in 1926, making it approximately 100 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 Milton Coste for weight limits or breed restrictions.

At the current list price of $14,000,000 for 4,700 sq ft, the asking price per square foot is approximately $2,979. 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: RLS20114125
First Listed: 9/10/2026
On Market: 9/10/2026
Price Changed: 9/10/2026
Contract Date: 9/10/2026

Listing Courtesy of Coldwell Banker Warburg - Wendy Greenbaum

Listing Contact: (646) 431-3090

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 9/11/2026 at 10:49 AM UTC

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Lenox Hill Market Update

84 sales last 30 days · $1.32M median · 5.7 months supply

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Quick Facts

Status Active Type Co-op Neighborhood Lenox Hill Borough Manhattan
County New York
Floor 7 of 14
Year Built 1926
First Listed 9/10/2026
Living Area 4,700 sqft
Maintenance $14,232/mo

Monthly Costs Estimate

Down Payment 20%

$2,800,000

Interest Rate Loading...

Source: Freddie Mac PMMS

Loan Term 30 years

Est. Monthly Payment

$0

Principal & Interest $0
PMI (under 20% down) $0
Maintenance $14,232
Total Monthly $0

Estimates only. Consult a lender for exact figures.

Mansion tax applies at this price point

New York State charges the buyer a mansion tax on residential purchases at $1,000,000 or more. At this asking price the tier is $10M to $14,999,999 at 3.25%, applied to the whole purchase price. It is due in cash at closing and cannot be financed.

Estimated mansion tax at asking

$455,000

Run the numbers on a different offer price

Estimate based on the asking price. Confirm your own obligation with your real estate attorney.

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