Milton Coste

Licensed Real Estate Associate Broker

(917) 416-7433
15 E 63RD Street

$39,500,000

$2,194 per sq ft

15 E 63RD Street

Lenox Hill, Manhattan

MLS® #RLS11029238

RLS at REBNY

Listing by Brown Harris Stevens Residential Sales LLC

7

Bedrooms

9.5

Baths

18,000

Sq. Ft.

1910

Year Built

Quick Summary

Bedrooms 7
Bathrooms 9 full, 4 half
Living Area 18,000 sq ft
Lot Size 2,500 sq ft
Year Built 1910
Ownership None
Property Taxes $204,948/yr
Neighborhood Lenox Hill
Floor 1 of 5

Property Highlights

  • Views: Other
  • Outdoor Space: Terrace
  • Style: WalkUp architecture

Property Details

Type Single Family Residence
Ownership None
Total Rooms 20
Baths 8 Full, 4 Half
Floor 1 of 5
View Other
Pets Yes
Year Built 1910
Living Area 18,000 sq ft
Architectural Style WalkUp
Basement Other
Lot Size 2,500 sq ft
Parcel # 1378-0012
Block/Lot 01378/0012

Description

SPECTACULAR BEAUX-ARTS LIMESTONE MANSION

A Rare Opportunity to Acquire a 1901 Gilded Age Masterpiece


Nestled just off Fifth Avenue's prestigious Gold Coast, this approximately 18,000-square-foot Beaux-Arts limestone mansion is a once-in-a-lifetime offering. With six above-grade floors and two below-grade levels, this architectural treasure is one of the few remaining mansions of the Gilded Age in Manhattan

Behind its commanding limestone facade lies an array of extraordinary rooms with soaring ceilings, exceptional proportions, and an abundance of irreplaceable original architectural details. Highlights include a majestic marble staircase, a copper-balconied landing overlooking the parlor, intricately coffered ceilings, and exquisite period moldings throughout.

Designed in 1901 by John H. Duncan, one of America's preeminent architects of the era, the mansion exemplifies his timeless craftsmanship. Duncan is celebrated for landmark projects such as General Grant "s National Memorial (1897) overlooking the Hudson River and the Soldiers" and Sailors" Arch in Brooklyn's Grand Army Plaza. His influence resonates in every corner of this magnificent home.

A Layout that Marries Historic Grandeur with Modern Potential

Entrance Floor:


The grand entrance begins with a stately vestibule secured by original double bronze doors, opening to a breathtaking 56'gallery with 12'7" soaring ceilings. A sweeping marble staircase ascends gracefully to the parlor level, complemented by an elevator featuring exquisite period paneling. The gallery leads to a stunning oval dining room adorned with carved woodwork. Beyond is a large, windowed space which would be perfect as a service kitchen connecting to the main kitchen below.

Parlor Floor:

The parlor floor is unparalleled in its architectural richness, featuring 16'9" ceilings - A remarkable height.

A grand paneled library with a fireplace and two huge, south-facing Palladian French windows overlooks 63rd Street. Opposite the landing is a resplendent drawing room with a fireplace, mirrored walls, intricate moldings, and ornate stonework extending to the ceilings. Beyond are an Anteroom, Bar area and Pantry. French door lead to an entertaining terrace and complete this level.

Third Floor:

Designed as an opulent master suite, this floor features 12" ceilings and includes a front-facing sitting room with two tall French windows, a spacious dressing area, and two luxurious marble bathrooms.

Fourth Floor:

The fourth floor offers two expansive bedrooms, each featuring its own large sitting room, fireplace, and ensuite bath.

Fifth Floor:

A remarkable double-height sitting room with a fireplace and a dramatic Palladian window defines the fifth floor. This level also includes two additional bedrooms with dressing areas and ensuite baths, as well as a kitchenette and dining area.

Sixth Floor:

The sixth floor features a balcony and atrium overlooking the sitting room below, along with an additional and large, sunny bedroom with ensuite bath. This floor boasts two terraces: a north-facing terrace with views of the Upper East Side's landmarks and a south-facing terrace offering breathtaking panoramas of Midtown's skyline including Billionaires'Row to the west and partial views of Central Park.

First Lower Level:

Originally designed as a very large eat-in kitchen, this level features up to 11" vaulted ceilings, beautiful original cabinetry, and a service entrance on the 63rd Street side secured with double doors. At the rear is an outdoor atrium/walled garden which fills the space with natural light. Part of this first lower level may also be perfect to accommodate large staff and security quarters.

Second Lower Level:

Fully built out and partially windowed, this recreation level presents endless possibilities for a spa, gym, or even an indoor swimming pool.

A Rare Chance to Own a New York City Landmark


15 East 63rd Street is a truly extraordinary offering. For the discerning buyer, it represents an unparalleled opportunity to preserve the wealth of architectural provenance while allowing the lucky buyer to incorporate state-of-the-art technology and amenities

Features & Amenities

Interior Features

Smoke Free In Unit

Exterior Features

Private Outdoor Space Under60 Sqft Terrace

Building Amenities

Green Building

Building Information

Total Units 1
Stories 5
Style WalkUp

Financial Details

RE Taxes $204,948/yr ($17,079/mo)

Lenox Hill offers a sophisticated blend of residential tranquility and cosmopolitan convenience. As one of the most coveted sections of the Upper East Side, the neighborhood is defined by its proximity to Central Park, world-class medical institutions, and the high-end boutiques of Madison Avenue. The housing stock here is diverse, ranging from palatial pre-war cooperatives to sleek, modern condominiums that offer sweeping views of the East River and the city skyline.

Lenox Hill Live Market Data

View Neighborhood

Active Listings

573

Median Asking Price

$1.65M

Median $/Sqft

$1,434

Avg Days on Market

N/A

New This Week

21

Price Reduced

34%

Sold (30 Days)

45

Median Sale Price

$1.55M

Live data from RLS at REBNY • Updated 2/24/26, 5:23 PM EST

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Location

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15 E 63RD Street, Lenox Hill, New York County

MLS® ID: RLS11029238
First Listed: 1/15/2025
On Market: 1/15/2025
Contract Date: 1/15/2025

Listing Courtesy of Brown Harris Stevens Residential Sales LLC - Sami Hassoumi

Listing Contact: (212) 906-9267

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.

RLS at REBNY

RLS Data display by Keller Williams NYC. Data last updated on 2/24/2026 at 10:23 PM UTC

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