Milton Coste

Licensed Real Estate Associate Broker

(917) 416-7433
870 United Nations Plaza #23B

For Sale · Listing by Sothebys International Realty

870 United Nations Plaza #23B

Midtown East, Manhattan

$2,800,000

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

$2,800,000

870 United Nations Plaza #23B

Midtown East, Manhattan

MLS® #RLS20120550

RLS at REBNY

Listing by Sothebys International Realty

3
Bedrooms
3
Baths
N/A
Sq. Ft.
1966
Year Built

Quick Summary

Bedrooms 3
Bathrooms 0
Lot Size 16,230.34 sq ft
Year Built 1966
Ownership Co-op
Maintenance $4,449/mo
Parking Garage
Neighborhood Midtown East
Floor 23 of 38

Property Highlights

  • Climate Control: Central Air
  • Parking: Private garage

Property Details

Type Co-op
Ownership Stock Cooperative
Total Rooms 6
Baths 3 Full
Floor 23 of 38
Cooling Central Air
Pets Yes, CatsOk, DogsOk
Year Built 1966
Parking Garage Available
Parking Features Garage, Valet
Structure Type HighRise
Furnished Unfurnished
Lot Size 16,230.34 sq ft
Parcel # 1360-0001-00870-000-000023B
Block/Lot 00001/0001

Listing History

Event Date Price Change
Listed Oct 13, 2026 $2,800,000 -
Currently Oct 13, 2026 $2,800,000 -

Description

Beautifully renovated by McBride & Associates Architects with interiors by Kari McCabe Inc., Residence 23B is an exceptionally spacious High Floor Corner home in Mint Move-in Condition. Oversized windows and multiple exposures fill the interiors with natural light while framing expansive city, skyline, East River, and bridge views. Grandly Scaled Entertaining: • Gracious Entry Gallery • Expansive 28'10" x 26'7" Corner Living and Dining Room • Wall-to-Wall oversized windows with sweeping city, skyline, and East River views from Northern and Western Exposures • Beautiful hardwood floors and custom lighting throughout Windowed Eat-In Kitchen • Spacious windowed Eat-In Kitchen with a dedicated breakfast area • Custom wood cabinetry and extensive storage • Stone countertops and backsplash • Dacor Gas Range • Miele Dishwasher • Separate Laundry Room with Miele Washer and Dryer • Excellent flow to the Gallery and Entertaining Spaces Private Bedroom Wing • Substantial Primary Bedroom with open views • Large Walk-In Closet and additional closet • En-Suite Primary Bathroom • Second Bedroom with a Full Bathroom • Library/Bedroom with an En-Suite Bathroom and excellent closet space • Powder Room • Thoughtfully designed abundant storage throughout *Staff Room Available For Purchase Separately* • Asking Price: $275,000 • Separate, private suite located on the seventh floor • Spacious 14'7" x 10'10" Office/Staff Room • Hardwood floors and recessed lighting • Renovated Full Bathroom with a glass-enclosed shower, stone tile, and contemporary fixtures • Flexible use as a Home Office, Guest Suite, Staff Room, or private retreat Building & Lifestyle: 860/870 United Nations Plaza was designed by master architects Harrison & Abramovitz and is one of the world’s most iconic residences. This architecturally prestigious luxury cooperative boasts the longest private driveway in the city, leading to a grand triple-height Lobby. A staff of 53 provides residents with 24-hour service and security. Superb amenities include an on-site Management Office, Fitness Center, Pilates Studio, Private Residents Club 39 with a lounge, kitchen, and entertainment rooms, two Conference Rooms, Golf Simulator, Billiards Room, in-house dry cleaning service, Rooftop Sun Decks, and a Garage. Pets are welcome. Apartments may be purchased in a Qualified Personal Residence Trust, and foreign buyers are welcome with USA-based assets. 75% Financing Permitted. Maintenance: $4,448.82/month. Utilities: $1,269.69/month. Cable and Internet: $91.23/month. Window Washing: $58.65/month. Total Monthly Charges: $5,868.39. 3% Flip Tax paid by Buyer. A rare High Floor Corner offering, Residence 23B combines beautifully renovated interiors, grand proportions, abundant natural light, and impressive open views. The separate Office/Staff Room provides an exceptional degree of flexibility within one of Manhattan’s most distinguished residential addresses.

Features & Amenities

Interior Features

Sauna Building Washer Dryer Install Allowed Common On Floor Common Area Laundry Room In Unit

Exterior Features

Building Garden Building Roof Deck

Building Amenities

Billiard Room Bike Storage Common Lounge Concierge Elevators Fitness Center Sauna Steam Room Sauna

Building Information

Building Data View Compliance & Permits
Total Units 167
Stories 38
Structure HighRise

Financial Details

Maintenance $4,449/mo

Midtown East is a dynamic hub that is the gateway to Manhattan for many. Home to iconic landmarks like Grand Central Terminal and the Chrysler Building, the neighborhood offers unparalleled convenience for commuters and professionals. The residential landscape is a mix of high-rise luxury towers and historic side-street cooperatives, providing a wide array of options for those who want to be at the center of the city's energy.

Midtown East Live Market Data

View Neighborhood

Active Listings

245

Median Asking Price

$1.59M

Median $/Sqft

$1,723

Avg Days on Market

N/A

New This Week

10

Price Reduced

24%

Sold (30 Days)

22

Median Sale Price

$1.60M

Live data from RLS at REBNY • Updated 10/13/26, 1:06 PM EST

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Location

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870 United Nations Plaza #23B, Midtown East, New York County

Floor Plans

Floor Plan 1

Building Information

Official NYC property records for this building

1967
Year Built
59 years old
37
Floors
C5-2
Zoning District
Condominiums

Tax & Assessment

Assessed Value: $64,098,272
Land Value: $10,664,999
Exemptions: $29,250,383

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

Lot Area: 88,357 SF
Building Area: 306,964 SF
Built FAR: 3.47
Allowed FAR: 10

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 $4,449 per month. Confirm the exact amount with Milton Coste before making an offer.

The current listed annual property tax is $0, or roughly $0 per month. Verify the current assessment with your attorney before closing.

This property has 3 bedrooms and 3 full bathrooms.

According to MLS records, the building was constructed in 1966, making it approximately 60 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.

Pets are permitted at this property. Contact Milton Coste for weight limits or breed restrictions.

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: RLS20120550
First Listed: 10/13/2026
On Market: 10/13/2026
Price Changed: 10/13/2026
Contract Date: 10/13/2026

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 10/13/2026 at 5:06 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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Midtown East Market Update

22 sales last 30 days · $1.59M median · 11.1 months supply

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Quick Facts

Status Active Type Co-op Neighborhood Midtown East Borough Manhattan
County New York
Floor 23 of 38
Year Built 1966
First Listed 10/13/2026
Parking Garage
Maintenance $4,449/mo

Monthly Costs Estimate

Down Payment 20%

$560,000

Interest Rate Loading...

Source: Freddie Mac PMMS

Loan Term 30 years

Est. Monthly Payment

$0

Principal & Interest $0
PMI (under 20% down) $0
Maintenance $4,449
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 $2M to $2,999,999 at 1.25%, applied to the whole purchase price. It is due in cash at closing and cannot be financed.

Estimated mansion tax at asking

$35,000

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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