Milton Coste

Licensed Real Estate Associate Broker

(917) 416-7433
10 E 73rd Street

For Sale · Listing by Sothebys International Realty

10 E 73rd Street

Lenox Hill, Manhattan

$35,000,000

Interested in this property?

$35,000,000

$3,977 per sq ft

10 E 73rd Street

Lenox Hill, Manhattan

MLS® #RLS20086046

RLS at REBNY

Listing by Sothebys International Realty

6
Bedrooms
6.5
Baths
8,800
Sq. Ft.
1910
Year Built

Quick Summary

Bedrooms 6
Bathrooms 8 full, 3 half
Living Area 8,800 sq ft
Lot Size 2,298.82 sq ft
Year Built 1910
Ownership None
Property Taxes $195,684/yr
Neighborhood Lenox Hill
Floor 1 of 5

Property Highlights

  • Views: City
  • Exposure: North,South,West facing
  • Outdoor Space: Building Terrace, Balcony

Property Details

Type Single Family Residence
Ownership None
Total Rooms 12
Baths 6 Full, 3 Half
Floor 1 of 5
View City
Exposure North,South,West
Cooling Central Air, Other
Pets Yes
Year Built 1910
Living Area 8,800 sq ft
Structure Type Townhouse
Flooring Hardwood
Furnished Unfurnished
Lot Size 2,298.82 sq ft
Parcel # 1387-0066
Block/Lot 01387/0066

Listing History

Event Date Price Change
Listed Apr 22, 2026 $35,000,000 -
Currently Sep 17, 2026 $35,000,000 -

Description

Perfectly situated on one of the city’s most prized blocks, this stunning limestone mansion is distinguished by its elegant yet restrained façade and fortuitous placement just off Fifth Avenue. The house is also most fortunate to be flanked by and across from several houses of equivalent architectural merit, on an especially coveted block. Sun-filled, open and airy, the 22.5-foot wide residence is comprised of a total of five stories plus an immaculately finished basement. The interiors are simply beautiful, and perfectly reflect the very good taste exhibited by the exterior of the house. Moreover, the classic but updated floor plan hits just the right note for today’s lifestyle, while the serene and effortlessly chic rooms are an absolute delight. Entry is into a vestibule with double doors that open into a white marble clad Gallery that imbues the house with a European sensibility. Beyond there is a grand scale Dining Room that very easily accommodates thirty guests. The adjacent eat-in Kitchen and Pantry are absolutely pristine, and newly-renovated with a panoply of state-of-the-art appliances and fittings. Delightfully, the Kitchen benefits from serene outlooks onto the pretty garden. A wide and graciously ascending staircase leads to the exceptional Parlor Floor which is distinguished by a nice big and broad landing, nearly 11-foot tall ceilings, and hand-carved millwork. The tremendous Living Room and elegant wood paneled Library both feature charming tree-line outlooks and wood burning fireplaces. In terms of the private quarters, the very big Third Floor Primary Bedroom Suite includes a fireplace, a luxurious and classic white marble bathroom, a large Dressing Area, an abundance of closets, and a lovely Study. The Fourth Floor is comprised of three spacious and sunny bedrooms with ensuite marble baths and very ample closets. And the Fifth Floor, with two bedrooms and baths, is much the same but also includes an utterly charming and most picturesque south facing terrace as well as a pretty planting terrace to the north. This sublime house is a delight in every possible way. Effortlessly, it incorporates the amenities and custom touches now expected for today’s lifestyle with prewar architectural merit and detail treasured by any discerning townhouse buyer.

Features & Amenities

Interior Features

Common On Floor See Remarks Flooring: Hardwood Fireplace (1)

Exterior Features

Balcony Private Outdoor Space Over60 Sqft Building Terrace Balcony

Building Amenities

Elevators

Appliances

Dryer Dishwasher Washer

Building Information

Building Data View Compliance & Permits
Total Units 1
Stories 5
Structure Townhouse

Financial Details

RE Taxes $195,684/yr ($16,307/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

563

Median Asking Price

$1.54M

Median $/Sqft

$1,579

Avg Days on Market

N/A

New This Week

47

Price Reduced

27%

Sold (30 Days)

81

Median Sale Price

$1.28M

Live data from RLS at REBNY • Updated 9/17/26, 2:36 PM EST

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Location

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10 E 73rd Street, Lenox Hill, New York County

Building Information

Official NYC property records for this building

1920
Year Built
106 years old
2
Floors
3
Residential Units
R5
Zoning District
Walk-Up Apartments

Tax & Assessment

Assessed Value: $94,080
Land Value: $33,360
Exemptions: $0

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

Lot Area: 4,000 SF
Building Area: 2,714 SF
Built FAR: 0.68
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 $0 per month. Confirm the exact amount with Milton Coste before making an offer.

The current listed annual property tax is $195,684, or roughly $16,307 per month. Verify the current assessment with your attorney before closing.

This property has 6 bedrooms and 6 full bathrooms and 3 half bathrooms.

The listed interior living area is 8,800 square feet. Verify dimensions independently during due diligence.

According to MLS records, the building was constructed in 1910, making it approximately 116 years old.

This listing is None

Pet policy requires confirmation with Milton Coste. Additional notes: UnitYes

At the current list price of $35,000,000 for 8,800 sq ft, the asking price per square foot is approximately $3,977. 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 milton@miltoncoste.com. 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: RLS20086046
First Listed: 4/22/2026
On Market: 4/22/2026
Price Changed: 4/22/2026
Contract Date: 4/22/2026

Listing Courtesy of Sothebys International Realty - Serena Boardman

Listing Contact: (212) 606-7611

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 9/17/2026 at 6:36 PM UTC

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Lenox Hill Market Update

81 sales last 30 days · $1.54M median · 7 months supply

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New listings in this neighborhood

Quick Facts

Status Active Type Single Family Residence Neighborhood Lenox Hill Borough Manhattan
County New York
Floor 1 of 5
Year Built 1910
First Listed 4/22/2026
Living Area 8,800 sqft
Annual Tax $195,684

Monthly Costs Estimate

Down Payment 20%

$7,000,000

Interest Rate Loading...

Source: Freddie Mac PMMS

Loan Term 30 years

Est. Monthly Payment

$0

Principal & Interest $0
PMI (under 20% down) $0
Est. Taxes $16,307
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 $25M and above at 3.90%, applied to the whole purchase price. It is due in cash at closing and cannot be financed.

Estimated mansion tax at asking

$1,365,000

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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