34-36 E 70TH Street
MLS® #RLS11025768
Listing by Corcoran Group
8
Bedrooms
8.5
Baths
12,500
Sq. Ft.
1900
Year Built
Quick Summary
Property Highlights
- Views: Other
- Outdoor Space: Deck, Patio, Terrace
- Character: Pre-war building (1900)
Property Details
Description
The James P. Warburg Mansion: A Rare Opportunity on Manhattan's Upper East Side
Exceptional Double-Width Mansion in a Prime UES Location
37 ft Wide / 12,500 sqft approx./ Landmarks Approved
Located on one of Manhattan's most prestigious tree-lined streets between Madison and Park Avenues, the James P. Warburg Mansion presents a once-in-a-lifetime opportunity to create a bespoke residence. This 37-foot-wide, nearly 13,000 square-foot mansion is set on an expansive 37 ft x 100 ft lot and features a front courtyard, second-floor terrace, and a 30-foot garden setback.
Delivered with landmark approval, a Spanish sandstone fa ade, construction approval, building permits, and floor area permits, this property is a historic gem waiting to be reimagined.
A Storied History and Architectural Legacy
The Warburg family, renowned for their contributions to finance, art, and philanthropy, called this residence home. The mansion stands as a testament to the family's enduring legacy. Originally built in 1900 as two-row houses, the property was transformed in the 1920s into a single residence by acclaimed architect William Lawrence Bottomley, a graduate of the Ecole des Beaux-Arts in Paris and one of New York's most distinguished designers.
Bottomley's influence can be seen in the mansion's timeless neo-Medieval design, featuring elegant archways, clean architectural lines, and the distinct Spanish sandstone facade that distinguishes it from neighboring homes.
Prime Upper East Side Location
This residence sits on the south side of East 70th Street, a block known for its historic and architectural significance. Neighboring iconic institutions like the Frick Museum and notable homes of distinguished families such as the Lehmans and Wertheims, the mansion offers a rare combination of history, elegance, and convenience. Its north-facing position ensures an abundance of natural light throughout the day, accentuating its grand interiors.
Limitless Potential: A Blank Canvas for Modern Luxury
This mansion offers approximately 12,439 square feet of interior space, ready to be transformed into a modern masterpiece. Each of its five stories features soaring ceilings of up to 15 feet, enhancing the sense of grandeur and scale.
The expansive layout includes:
Five levels plus a cellar, perfect for luxurious living and entertaining.
A second-floor terrace for private outdoor enjoyment.
A front courtyard and rear garden that provide opportunities to create a serene outdoor oasis in the heart of Manhattan.
With its flexible design potential, the property is a canvas for crafting an extraordinary home that reflects your personal vision, seamlessly blending historic elegance with contemporary comforts.
Outdoor Space with Endless Possibilities
The mansion's 30-foot rear garden setback and ample outdoor spaces offer the opportunity to create a private urban sanctuary. Whether it becomes a lushly landscaped garden, an alfresco dining area, or an entertainer's paradise, the outdoor areas perfectly complement the grandeur of the interiors.
Architectural Brilliance
William Lawrence Bottomley, celebrated for his works across Manhattan, including the River House and Turtle Bay Gardens, merged two historic structures to create this masterpiece in the 1920s. His design honors the property's original neo-medieval charm while allowing for modern adaptations, offering the perfect balance of timeless craftsmanship and contemporary functionality.
An Unparalleled Opportunity
The James P. Warburg Mansion represents the ultimate in Upper East Side townhouse living. Its rich history, architectural pedigree, soaring ceilings, and grand proportions offer the chance to create a legacy property that will endure for generations.
This is more than a home-it's a statement of timeless sophistication and elegance, set in one of the most desirable locations in Manhattan.
Features & Amenities
Interior Features
Exterior Features
Building Amenities
Building Information
Financial Details
About Lenox Hill
View All Lenox Hill ListingsLenox 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 NeighborhoodActive Listings
564
Median Asking Price
$1.49M
Median $/Sqft
$1,440
Avg Days on Market
N/A
New This Week
19
Price Reduced
39%
Sold (30 Days)
44
Median Sale Price
$1.63M
Live data from RLS at REBNY • Updated 2/16/26, 1:29 PM EST
Similar Listings in Lenox Hill
View All18 E 62ND Street
Single Family Residence • RLS #RLS20071497
57 E 74TH Street
Single Family Residence • RLS #RLS20034963
159 E 71ST Street
Single Family Residence • RLS #RLS11009635
49 E 74th Street
Multi Family • RLS #RLS20018797
46 E 71st Street
Single Family Residence • RLS #RLS20026035
123 E 61st Street
Duplex • RLS #RLS20069318
Location
34-36 E 70TH Street, Lenox Hill, New York County
Listing Data
RLS® at REBNY (Real Estate Board of New York) via Trestle API. Updated in real-time.
Market Data
RLS® at REBNY (Real Estate Board of New York). Live data updated in real-time.
Map & Location
OpenStreetMap contributors via Leaflet. Geocoding via Nominatim.
All data is provided for informational purposes only and should be independently verified. See our Data Sources Policy for more information.
Listing Courtesy of Corcoran Group - Carrie Chiang
Listing Contact: (917) 293-0082
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 Data display by Keller Williams NYC. Data last updated on 2/16/2026 at 6:29 PM UTC