Milton Coste

Licensed Real Estate Associate Broker

(917) 416-7433
106 E 71st Street #MANSION

For Sale · Listing by Sothebys International Realty

106 E 71st Street #MANSION

Lenox Hill, Manhattan

$26,000,000

Interested in this property?

$26,000,000

$2,086 per sq ft

106 E 71st Street #MANSION

Lenox Hill, Manhattan

MLS® #RLS20125288

RLS at REBNY

Listing by Sothebys International Realty

7
Bedrooms
8.5
Baths
12,467
Sq. Ft.
1910
Year Built

Quick Summary

Bedrooms 7
Bathrooms 0 full, 2 half
Living Area 12,467 sq ft
Lot Size 1 sq ft
Year Built 1910
Ownership None
Property Taxes $2,775,588/yr
Neighborhood Lenox Hill
Floor 1 of 5

Property Highlights

  • Views: Garden
  • Exposure: North,South facing
  • Outdoor Space: Terrace, Rooftop

Property Details

Type Single Family Residence
Ownership None
Total Rooms 17
Baths 8 Full, 2 Half
Floor 1 of 5
View Garden
Exposure North,South
Heating Central
Cooling Central Air
Pets Yes
Year Built 1910
Living Area 12,467 sq ft
Structure Type Townhouse
Flooring Hardwood
Furnished Unfurnished
Lot Size 1 sq ft
Parcel # 1405-0070
Block/Lot 00001/0001

Listing History

Event Date Price Change
Listed Nov 5, 2026 $26,000,000 -
Currently Nov 5, 2026 $26,000,000 -

Description

A Palatial Limestone Mansion Off Park Avenue Magnificent in scale, 106 East 71st Street is a 25-foot-wide, 17-room limestone Mansion on one of the Upper East Side’s most coveted blocks, just off Park Avenue. Built in 1910 and meticulously renovated as a single-family home, this move-in-ready residence pairs architectural grandeur with modern comfort. Custom plasterwork, wood moldings, white oak plank floors, vaulted ceilings and oversized mahogany-trimmed windows distinguish the interiors. Seven Bedrooms, eight full Baths and two Powder Rooms complement exceptional entertaining spaces, including a fireside Gallery, a 600-square-foot Baronial Parlor, a formal Dining Room with a gold leaf ceiling and a Chef’s Kitchen with a Dining Terrace overlooking the landscaped South Garden. Additional highlights include a Gym, Study, Media/Family Room, Penthouse Library, seven wood-burning fireplaces, Sonos and security systems. A grand circular marble staircase anchors the home, while an oversized Otis Elevator serves every level. Garden Level A private street entrance opens to a discreet Service Hall. A substantial Gym and Recreation Area, Staff Room and Bath provide direct Garden access. A Laundry Room, Kitchenette, elevator mechanical room and abundant storage complete this level. Main Level A marble Vestibule leads to a magnificent Gallery with a fireplace and the century-old marble staircase. A Security Room, concealed storage, closets and Powder Room are thoughtfully integrated. The bright, south-facing Kitchen and Breakfast Room feature an oversized arched window, marble counters, custom cabinetry, a fireplace and Viking, Sub-Zero and Miele appliances. The adjoining Dining Terrace overlooks the tranquil Garden. Parlor Level Thirteen-foot ceilings crown the richly paneled mahogany Living Room and formal Dining Room, each with a fireplace and original mantel. A Juliet balcony, wide-plank floors, intricate plaster moldings and custom millwork create an exceptional setting for entertaining. A Wet Bar and guest Powder Room complete the floor. Fourth Level Two Guest Bedrooms, each with an en-suite Bath, are joined by a comfortable Den. Custom millwork, white oak floors and multiple closets enhance the accommodations. Fifth Level The full-floor Primary Suite offers exceptional privacy. The north-facing Bedroom features a fireplace, an expansive Dressing Room and additional closets. Two beautifully appointed Baths each include a tub and separate shower. A private south-facing Study with a fireplace completes the suite. Sixth Level Two generously proportioned Bedrooms, each with a full Bath, accommodate family and guests. A Playroom, Kitchenette and ample storage provide additional flexibility. Penthouse Level A Media/Family Room with a vaulted ceiling, arched windows and French doors opens to a planted Terrace. A paneled Library and Wet Bar offer an intimate retreat. Above, an expansive Roof Terrace framed by an original limestone balustrade and carved urns offers open-sky vistas and views toward Park Avenue and Central Park. Lower Level The home’s mechanical systems are discreetly housed below, providing climate control throughout the residence. A Legacy of Distinction Set within the Upper East Side Historic District and distinguished by its selection as the Kips Bay Decorator Show House, this meticulously maintained mansion unites architectural pedigree, gracious proportions and the comforts of contemporary living.

Features & Amenities

Interior Features

Eat In Kitchen See Remarks Flooring: Hardwood Fireplace (1)

Exterior Features

Building Barbecue Building Garden Private Outdoor Space Over60 Sqft Terrace Rooftop

Building Amenities

Security System

Appliances

Dryer Dishwasher Washer

Building Information

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

Financial Details

RE Taxes $2,775,588/yr ($231,299/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

671

Median Asking Price

$1.09M

Median $/Sqft

$1,444

Avg Days on Market

N/A

New This Week

28

Price Reduced

37%

Sold (30 Days)

63

Median Sale Price

$1.28M

Live data from RLS at REBNY • Updated 11/5/26, 10:43 AM EST

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Location

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106 E 71st Street #MANSION, Lenox Hill, 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
R3-2
Zoning District
Two Family Dwellings

Tax & Assessment

Assessed Value: $97,260
Land Value: $20,400
Exemptions: $0

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

Lot Area: 2,880 SF
Building Area: 2,432 SF
Built FAR: 0.84
Allowed FAR: 0.75

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 $2,775,588, or roughly $231,299 per month. Verify the current assessment with your attorney before closing.

This property has 7 bedrooms and 8 full bathrooms and 2 half bathrooms.

The listed interior living area is 12,467 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.

At the current list price of $26,000,000 for 12,467 sq ft, the asking price per square foot is approximately $2,086. 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: RLS20125288
First Listed: 11/5/2026
On Market: 11/5/2026
Price Changed: 11/5/2026
Contract Date: 11/5/2026

Listing Courtesy of Sothebys International Realty - Nikki Field

Listing Contact: (212) 606-7669

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.

How working with a buyer's agent works: I work for you, not the seller. Before I show you anything, New York brokerage rules ask us to put that in writing: an agreement and a disclosure that say I work for you and negotiate on your behalf. The agreement is non-exclusive: you can work with other agents, it runs for a short fixed term we agree on, and you can end it with a note. You may attend open houses independently without an agreement. Read how it works

RLS at REBNY

RLS Data display by Keller Williams NYC. Data last updated on 11/5/2026 at 3:43 PM UTC

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Milton Coste - NYC Real Estate Broker

Milton Coste

Licensed Real Estate Associate Broker

Keller Williams NYC

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Sale history, taxes, violations and comps for this unit

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Lenox Hill Market Update

63 sales last 30 days · $1.09M median · 10.7 months supply

Read Full Report

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 11/5/2026
Living Area 12,467 sqft
Annual Tax $2,775,588

Monthly Costs Estimate

Down Payment 20%

$5,200,000

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 $231,299
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

$1,014,000

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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