SOLD FOR $18,250,000
· Closed November 26, 2018
34 E 70TH Street #NA
MLS® #RLS10413395
Listing by Brown Harris Stevens Residential Sales LLC
8
Bedrooms
9
Baths
12,439
Sq. Ft.
N/A
Year Built
Quick Summary
Property Highlights
- Location: Upper East Side, Manhattan
- Property Type: Single Family Residence
Property Details
Listing History
| Event | Date | Price | Change |
|---|---|---|---|
| Listed | Sep 7, 2017 | $32,500,000 | - |
| Price Reduced | Mar 8, 2018 | $22,500,000 | -30.8% |
| Currently | May 1, 2026 | $18,250,000 | -18.9% |
Description
THE WARBURG HERITAGE
The Warburg family has a remarkable history of accomplishments in finance, economics, science, art history, public policy, and philanthropy, well-documented in Ron Chernow's book The Warburgs. At the turn of the 20th century, marriage brought two Warburg brothers - Felix and Paul - from Hamburg, Germany, to New York. Felix Warburg married Frieda Schiff, daughter of financier Jacob Schiff, and at their wedding his younger brother Paul met Nina Loeb, daughter of Solomon Loeb, co-founder of the investment house Kuhn Loeb.
Paul and Nina Warburg raised their two children in New York, where Paul was a partner at Kuhn Loeb, and for several years in Washington, where Paul served as vice-governor of the Federal Reserve Board after playing a key role in its founding. In 1924, their son James Paul Warburg, a budding banker at the time, bought two townhouses at 34 and 36 East 70th Street, combining them into a single residence. Four years later, his cousin Carola Warburg and her husband Walter Rothschild built their home just across the street. The block was an irresistible choice even in the 1920's.
EAST 70th STREET
East 70th Street in Manhattan is considered extraordinary in part because it is anchored on Fifth Avenue by the exquisite classicism of the Frick Museum, the former private residence of Henry Clay Frick, who built the elegant home in 1912 for $5 million, an extraordinary sum for the time. It was designed to accommodate Henry, his wife Adelaide and their daughter Helen Clay Frick - and a staff of 27. Built on a 200' x 275' lot, Frick's fifty-foot-deep residence was designed by Carrere and Hastings, with the exterior and parts of the interior fashioned in Indiana limestone
MADISON AVENUE TO PARK AVENUE ON EAST 70 STREET
The north side of this block has only three large mansions that were developed together in 1928, an extremely fortunate fact that gives 34 East 70th Street the perfect position opposite low buildings enabling northern light to pour into the building at all times of the day. Owners of houses on the block have included Augustus G. Paine, Jr., a paper baron; Stephen C. Clark, a member of the family that founded the Singer Sewing Machine Company; Maurice Wertheim, founder of Wertheim and Co., investment bankers; and Arthur S. Lehman, a senior partner in the Lehman Brothers firm and brother of Herbert H. Lehmann, the 45th Governor of New York.
THE ARCHITECT: WILLIAM LAWRENCE BOTTOMLEY
Hired by James P. Warburg to combine two townhouses into a single home in 1924, William Lawrence Bottomley was a graduate of the Ecole Des Beaux-Arts in Paris. Of his 186 commissions, 11 are individually listed on the National Register of Historic Places. Among his other East Side designs are a mansion at 18 East 73rd Street, Turtle Bay Gardens, and the palatial River House which, prior to the construction of the FDR Drive, had a private dock for yachts
THE MANSION: THE PERFECTLY LOCATED "BLANK CANVAS"
Encompassing 37 feet in width, this building comprises approximately 12,439 total square feet. Currently configured as 10 units including a full floor apartment on the top level, the building is delivered vacant and ready for conversion to single-family.
DESIGN A GARDEN
There is considerable outdoor space in the rear which could become a private garden in several configurations, all of which receive substantial light.
CREATE YOUR HOME
This is a unique opportunity to design your own 37-foot-wide masterpiece that embodies your personal vision of modern townhouse living on arguably the finest street of Manhattan's Upper East Side.
Building Information
About Upper East Side
View All Upper East Side ListingsThe Upper East Side remains the gold standard for classic New York elegance. Known for 'Museum Mile' and its low-traffic, tree-lined streets, the neighborhood offers a refined lifestyle away from the midtown bustle. While famous for its historic cooperatives, the area has seen a recent surge in ultra-luxury new construction condos, particularly along the Second Avenue Subway corridor, making it a top choice for both traditionalists and modern buyers.
Upper East Side Live Market Data
View NeighborhoodActive Listings
338
Median Asking Price
$1.63M
Median $/Sqft
$1,538
Avg Days on Market
N/A
New This Week
26
Price Reduced
29%
Sold (30 Days)
35
Median Sale Price
$1.53M
Live data from RLS at REBNY • Updated 5/1/26, 1:13 PM EST
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34 E 70TH Street #NA, Upper East Side, New York County
Floor Plans
Building Information
Official NYC property records for this building
Tax & Assessment
Note: Individual unit taxes may differ. Verify current tax bills with NYC DOF.
Source: NYC PLUTO (Primary Land Use Tax Lot Output), NYC Department of City Planning (data.cityofnewyork.us)
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Listing Data
RLS® at REBNY (Real Estate Board of New York) via Trestle API. Updated in real-time.
Building Data
NYC PLUTO (Primary Land Use Tax Lot Output), NYC Department of City Planning. Updated quarterly.
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.
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Frequently Asked Questions
Common questions about this property
This property has 8 bedrooms and 9 full bathrooms.
The listed interior living area is 12,439 square feet. Verify dimensions independently during due diligence.
At the current list price of $18,250,000 for 12,439 sq ft, the asking price per square foot is approximately $1,467. 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) 416-7433Listing Courtesy of Brown Harris Stevens Residential Sales LLC - Paula Delnunzio
Listing Contact: (212) 906-9207
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 Data display by Keller Williams NYC. Data last updated on 5/1/2026 at 5:13 PM UTC