Milton Coste

Licensed Real Estate Associate Broker

(917) 416-7433
311 E 71ST Street #10A

For Sale · Listing by Brown Harris Stevens Residential Sales LLC

311 E 71ST Street #10A

Lenox Hill, Manhattan

$550,000

Interested in this property?
Active For Sale • Co-op

$550,000

$823 per sq ft

311 E 71ST Street #10A

Lenox Hill, Manhattan

The Diplomat

MLS® #RLS20118260

RLS at REBNY

Listing by Brown Harris Stevens Residential Sales LLC

1
Bedroom
1
Bath
668
Sq. Ft.
1962
Year Built

Quick Summary

Bedrooms 1
Bathrooms 1
Living Area 668 sq ft
Year Built 1962
Ownership Co-op
Maintenance $2,133/mo
Parking Garage
Neighborhood Lenox Hill
Floor 10 of 13

Property Highlights

  • Exposure: North facing
  • Climate Control: Other
  • Parking: Private garage

Property Details

Type Co-op
Ownership Stock Cooperative
Total Rooms 3
Baths 1 Full
Floor 10 of 13
Exposure North
Cooling Other
Pets Yes
Year Built 1962
Living Area 668 sq ft
Parking Garage Available
Structure Type HighRise
Basement Other
Block/Lot 01446/0008

Listing History

Event Date Price Change
Listed Sep 30, 2026 $550,000 -
Currently Sep 30, 2026 $550,000 -

Description

Welcome home to this spacious and beautifully renovated one-bedroom apartment in the heart of Manhattan's Upper East Side. Generously proportioned rooms, a thoughtfully updated interior, and a comfortable, sophisticated feel make this a wonderful place to call home. The large living room offers plenty of space for both relaxing and entertaining, while the renovated kitchen and bath provide the modern finishes today's buyers are looking for. The well-sized bedroom easily accommodates a king-size bed with room to spare. Quiet is what this home is all about. Facing back, it is super sunny but pin drop quiet. Ideally located in one of the Upper East Side's most convenient neighborhoods, the apartment is just moments from an excellent selection of restaurants, cafés, specialty food shops and markets, with multiple transportation options nearby. Combining space, style and an exceptionally convenient Manhattan location, this is Upper East Side living at its best. 311 East 71st Street is a full-service building offering doorman service seven days a week (7am-1am), a live-in superintendent, laundry room, bike room, storage and an on-site garage (waitlist). The building permits up to 75% financing and considers co-purchasing, gifting, guarantors, pieds-à-terre and pets on a case-by-case basis. Washer/dryers are not allowed in the building with board approval. Subletting is permitted after two years of ownership with board approval. There is a $371. assessment in place until March, 2027 for facade work.

Features & Amenities

Interior Features

Building In Basement

Exterior Features

None

Building Amenities

Bike Storage

Appliances

Dishwasher

Building Information

Building The Diplomat
Building Data View Compliance & Permits
Total Units 90
Stories 13
Structure HighRise

Financial Details

Maintenance $2,133/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

655

Median Asking Price

$1.32M

Median $/Sqft

$1,500

Avg Days on Market

N/A

New This Week

34

Price Reduced

30%

Sold (30 Days)

81

Median Sale Price

$1.24M

Live data from RLS at REBNY • Updated 9/30/26, 5:37 PM EST

Similar Listings in Lenox Hill

View All

Location

Loading map...

311 E 71ST Street #10A, Lenox Hill, New York County

Floor Plans

Floor Plan 1

Building Information

Official NYC property records for this building

1962
Year Built
64 years old
13
Floors
96
Residential Units
R8B
Zoning District
Elevator Apartments

Tax & Assessment

Assessed Value: $9,604,350
Land Value: $1,152,000
Exemptions: $103,892

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

Lot Area: 10,216 SF
Building Area: 80,056 SF
Built FAR: 7.84
Allowed FAR: 4

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 monthly maintenance are $2,133 per month. Confirm the exact amount with Milton Coste before making an offer.

This property has 1 bedroom and 1 full bathroom.

The listed interior living area is 668 square feet. Verify dimensions independently during due diligence.

According to MLS records, the building was constructed in 1962, making it approximately 64 years old.

This listing is a co-op (stock cooperative). Buyers purchase shares in a corporation rather than real property, and the board must approve all sales.

Pet policy requires confirmation with Milton Coste.

At the current list price of $550,000 for 668 sq ft, the asking price per square foot is approximately $823. 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: RLS20118260
First Listed: 9/30/2026
On Market: 9/30/2026
Price Changed: 9/30/2026
Contract Date: 9/30/2026

Listing Courtesy of Brown Harris Stevens Residential Sales LLC - Debra C Hoffman

Listing Contact: (212) 318-2397

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 9/30/2026 at 9:37 PM UTC

See it in person

Milton Coste - NYC Real Estate Broker

Milton Coste

Licensed Real Estate Associate Broker

Keller Williams NYC

View Bio →

Sale history, taxes, violations and comps for this unit

(917) 416-7433 WhatsApp Email Milton
Hablo Español

Lenox Hill Market Update

81 sales last 30 days · $1.32M median · 8.1 months supply

Read Full Report

New listings in this building

Quick Facts

Status Active Type Co-op Neighborhood Lenox Hill Borough Manhattan
County New York
Floor 10 of 13
Year Built 1962
First Listed 9/30/2026
Parking Garage
Living Area 668 sqft
Maintenance $2,133/mo

Monthly Costs Estimate

Down Payment 20%

$110,000

Interest Rate Loading...

Source: Freddie Mac PMMS

Loan Term 30 years

Est. Monthly Payment

$0

Principal & Interest $0
PMI (under 20% down) $0
Maintenance $2,133
Total Monthly $0

Estimates only. Consult a lender for exact figures.

Back to Search

Find more properties

Buying a Co-op? Start Here

Co-op vs. Condo: Which Is Right for You?

Ownership structure, board approval, financing: the full comparison.

Read article

How to Ace Your Co-op Board Interview

What boards look for, common questions, and how to prepare.

Read article

NYC Flip Tax Guide for Sellers

What co-op flip taxes are, how they're calculated, and who pays.

Read article

HDFC Co-ops: Complete Guide

Income limits, resale caps, and how to qualify for affordable co-ops.

Read article

Interested in this property?

Your info is secure and never shared.

Call Text Email