Milton Coste

Licensed Real Estate Associate Broker

(917) 416-7433
21 E 61ST Street #12C

For Sale · Listing by Corcoran Group

21 E 61ST Street #12C

Lenox Hill, Manhattan

$4,500,000

Interested in this property?
Active For Sale Condop

$4,500,000

$3,331 per sq ft

21 E 61ST Street #12C

Lenox Hill, Manhattan

Carlton House

MLS® #RLS20116907

RLS at REBNY

Listing by Corcoran Group

2
Bedrooms
2
Baths
1,351
Sq. Ft.
1951
Year Built

Quick Summary

Bedrooms 2
Bathrooms 2
Living Area 1,351 sq ft
Year Built 1951
Ownership Condop
HOA/Common Charges $5,432/mo
Neighborhood Lenox Hill
Floor 12 of 16

Property Highlights

  • Views: City
  • Exposure: East facing
  • Outdoor Space: Terrace, Balcony

Property Details

Type Condop
Ownership Condop
Total Rooms 4
Baths 2 Full
Floor 12 of 16
View City
Exposure East
Cooling Central Air
Pets Yes
Year Built 1951
Living Area 1,351 sq ft
Structure Type HighRise
Basement Other
Parcel # 1376-0015-00021-000-000012C
Block/Lot 01376/0015

Listing History

Event Date Price Change
Listed Sep 23, 2026 $4,500,000 -
Currently Sep 23, 2026 $4,500,000 -

Description

The Carlton House spans the full Madison Avenue blockfront from East 61st to East 62nd Street, just one block from Central Park. Once the Helmsley Carlton House, the building was reimagined by Extell in 2015 as a collection of refined modern residences. This high floor two bedroom, two bath home is finished with care throughout. White oak floors run through every room, custom millwork adds warmth, and a Lutron system controls motorized solar shades and blackout shades. The open kitchen pairs white lacquer cabinetry with a full suite of Miele appliances and a Subzero wine cooler. The primary suite has two large custom closets and a marble bath with double sinks, a rain shower, a soaking tub and heated floors. Off the bedroom is what sets this home apart, a private terrace of roughly 100 square feet with open views south toward downtown and east over Madison Avenue. The second bedroom works just as well as a library, with a double closet and a hall bath that also has heated floors. A Miele washer and dryer and central air complete the home. Residents enjoy a white glove doorman and concierge, a resident manager, a 65 foot heated indoor pool, steam rooms, a playroom, private storage, bike storage and a refrigerated room in the lobby for grocery deliveries. With Central Park a block away, as well as Bergdorf Goodman, Hermès, Chanel, Apple, Tom Ford, Cipriani, La Goulue and Bilboquet. Ground lease expires June 30, 2169.

Features & Amenities

Interior Features

Building Other Washer Hookup In Unit

Exterior Features

Balcony Building Roof Deck Private Outdoor Space Over60 Sqft Terrace Balcony

Building Amenities

Bike Storage Cold Storage Common Playroom Concierge Game Room Indoor Pool Spa Hot Tub Steam Room

Appliances

Washer Dryer Allowed

Building Information

Building Carlton House
Building Data View Compliance & Permits
Total Units 69
Stories 16
Structure HighRise

Financial Details

Common Charges $5,432/mo
Land Lease Yes

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

621

Median Asking Price

$1.75M

Median $/Sqft

$1,602

Avg Days on Market

N/A

New This Week

51

Price Reduced

27%

Sold (30 Days)

80

Median Sale Price

$1.35M

Live data from RLS at REBNY • Updated 9/23/26, 3:08 PM EST

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Location

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21 E 61ST Street #12C, Lenox Hill, New York County

Floor Plans

Floor Plan 1

Building Information

Official NYC property records for this building

1937
Year Built
89 years old
4
Floors
R5
Zoning District

Tax & Assessment

Assessed Value: $12,776,400
Land Value: $1,143,000
Exemptions: $12,776,400

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

Lot Area: 65,000 SF
Building Area: 169,320 SF
Built FAR: 2.6
Allowed FAR: 1.5

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 common charges are $5,432 per month. Confirm the exact amount with Milton Coste before making an offer.

This property has 2 bedrooms and 2 full bathrooms.

The listed interior living area is 1,351 square feet. Verify dimensions independently during due diligence.

According to MLS records, the building was constructed in 1951, making it approximately 75 years old.

This listing is a condop, a hybrid structure where the building is legally a co-op but individual units are sold with greater flexibility, often including subletting rights similar to condos.

Pets are permitted at this property. Contact Milton Coste for weight limits or breed restrictions.

At the current list price of $4,500,000 for 1,351 sq ft, the asking price per square foot is approximately $3,331. 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: RLS20116907
First Listed: 9/23/2026
On Market: 9/23/2026
Price Changed: 9/23/2026
Contract Date: 9/23/2026

Listing Courtesy of Corcoran Group - ANDREW J KATZENBERG

Listing Contact: (203) 313-9519

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 9/23/2026 at 7:08 PM UTC

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Lenox Hill Market Update

80 sales last 30 days · $1.75M median · 7.8 months supply

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New listings in this building

Quick Facts

Status Active Type Condop Neighborhood Lenox Hill Borough Manhattan
County New York
Floor 12 of 16
Year Built 1951
First Listed 9/23/2026
Living Area 1,351 sqft
Common Charges $5,432/mo

Monthly Costs Estimate

Down Payment 20%

$900,000

Interest Rate Loading...

Source: Freddie Mac PMMS

Loan Term 30 years

Est. Monthly Payment

$0

Principal & Interest $0
PMI (under 20% down) $0
Common Charges $5,432
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 $3M to $4,999,999 at 1.50%, applied to the whole purchase price. It is due in cash at closing and cannot be financed.

Estimated mansion tax at asking

$67,500

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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