Milton Coste

Licensed Real Estate Associate Broker

(917) 416-7433

SOLD FOR $18,250,000

· Closed November 26, 2018

34 E 70TH Street #NA

$18,250,000

$1,467 per sq ft

34 E 70TH Street #NA

Upper East Side, Manhattan

MLS® #RLS10413395

RLS at REBNY

Listing by Brown Harris Stevens Residential Sales LLC

8

Bedrooms

9

Baths

12,439

Sq. Ft.

N/A

Year Built

Quick Summary

Bedrooms 8
Bathrooms 9
Living Area 12,439 sq ft
Year Built N/A
Neighborhood Upper East Side

Property Highlights

  • Location: Upper East Side, Manhattan
  • Property Type: Single Family Residence

Property Details

Type Single Family Residence
Total Rooms 19
Baths null Full
Living Area 12,439 sq ft
Parcel # 1384-0046

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

The 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 Neighborhood

Active 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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Location

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34 E 70TH Street #NA, Upper East Side, New York County

Floor Plans

Floor Plan 1

Building Information

Official NYC property records for this building

1925
Year Built
101 years old
2
Floors
2
Residential Units
R5B
Zoning District
Two Family Dwellings

Tax & Assessment

Assessed Value: $81,120
Land Value: $15,240
Exemptions: $0

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

Lot Area: 1,900 SF
Building Area: 2,140 SF
Built FAR: 1.13
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

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) 416-7433
MLS® ID: RLS10413395
First Listed: 9/7/2017
Price Changed: 3/8/2018
Closed: 11/26/2018
Contract Date: 9/7/2017

Listing 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 at REBNY

RLS Data display by Keller Williams NYC. Data last updated on 5/1/2026 at 5:13 PM UTC

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