870 United Nations Plaza PH 37/38BNew York, NY 10017
For Sale
$3,450,000
Smart Buyer Rebate $43,125
870 UNITED NATIONS PLAZA PH 37/38B
Light-Filled Penthouse Duplex in Historic Turtle Bay Neighborhood Has Breathtaking Unobstructed Views of NYC
Here is your once-in-a-lifetime opportunity to own a beautifully appointed and impeccably designed three bedroom plus library in one of Manhattan’s premier residences. This residence boasts 9ft ceilings and a gracious layout and bright open city views. The Duplex was imagined and designed by legendary Master Architects Max Abramovitz and Wallace K. Harrison, who also designed the nearby United Nations Secretariat building. The Co-op is a multi-story masterpiece, with mid-century modern details such as plaster walls, high ceilings, hardwood flooring, (white marble flooring on the ground floor and hard wood upstairs) wood-burning fireplace, and a private elevator. This penthouse is the crowning jewel of one of the most modernist residential structures in New York City with wall to wall windows spread over two floors with amazing views from all rooms. Additional features of this incredible home include custom lighting, multiple zoned central air conditioning and generous closet space throughout. The sun drenched corner PH looks out on panoramic NW&E views and the greatest city in the world is literally at your feet. MAIN LEVEL 37TH FLOOR Enter through a private foyer that showcases a beautiful spiral staircase. The vast corner living boasts a wood burning fireplace with a finely crafted marble mantle. Other rooms on this level include a large privale bedroom with ensuite bathroom; an eat in kitchen with a dishwasher and a wine cooler; a formal dining room and library with direct and protected views of the East River and beyond; a laundry room with a washer and dryer; and a service entrance, UPPER LEVEL 38TH FLOOR Ascend to a second floor via the private elevator or the gorgeous spiral staircase to access the large Master Suite which includes a dressing room and a custom marble bathroom with a luxurious rainfall shower, walk in closets and a spacious sitting room that could easily be converted into a fourth bedroom; a home office, or an additional bathroom as the space’s original plumbing remains intact. (There is a dressing room that could be converted back to an additional bathroom) The second and third bedrooms on this level both have ensuite bathrooms. ABOUT THE BUILDING 870 UN PLAZA is a prestigious luxury coop which has the longest private driveway in NYC, which leads to a grand triple height lobby. The superbly run full service building offers a 24 hour doorman, valet, and concierge service. The more than 50 staff members provide five star service and security elevating residents to a whole new level of lifestyle. Building amenities include an on site management office; state of the art fitness center with Pilates studio; golf simulator; billiards room; two conference rooms; an in house dry cleaning service; rooftop sun decks; heated indoor garage; and “Club39”, a private resident’s lounge and entertainment area. Pets are welcome, and there is a dog park across the street. A storage room transfers with the apartment. United Nations Plaza is conveniently situated near public transportation, shops, restaurants and the FDR Drive, which makes its location ideal for frequent commuters. Neighboring the 18 acre UN Complex makes this exquisite home the epitome of comfort, privacy, and serenity.
Listed by Pamela A Oconnor
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Sothebys International Realty
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(212) 606-7709
Last updated March 26, 2026
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Source: REBNY #RLS20066868
RLS Data display by Prevu Real Estate LLC
Listing Facts
TypeCo-op
NeighborhoodTurtle Bay
Bedrooms4
Bathrooms3.5
Days on Prevu80
HOA/Maint. Fees$11,367/month
Amenities
Dishwasher
Washer/Dryer
Pets Allowed
Concierge
Location
Mortgage Calculator
Listing History
03/18/2026
Price Decreased
$3,450,000
01/14/2026
Price Decreased
$3,950,000
01/14/2026
Listed by Sothebys International Realty
$3,995,000
Estimated Closing Costs
Total
$61,250
Attorney Fees
$4,000
NYC Mansion Tax
$51,750
Bank Attorney
$1,500
Other Closing Costs
$4,000
Estimated closing costs are based on the list price of $3,450,000 and a 20% downpayment. These estimates are for indicative purposes only. Actual closing costs may vary for each transaction. See the Closing Costs Calculator for calculations specific to your situation.
Property Details for 870 United Nations Plaza PH 37/38B
Association
Amenities
Pets Allowed: Building Yes, Yes
Concierge: Concierge Yes, Doorman Yes, Doorman Full Time
Laundry Features: Common Area, Laundry Room, In Unit
Frequently Asked Questions
How many bedrooms and bathrooms does this co-op have?
There are 4 bedrooms and 3.5 bathrooms in this co-op at 870 United Nations Plaza PH 37/38B.
Are pets allowed at 870 United Nations Plaza?
Yes, 870 United Nations Plaza allows pets.
How does 870 United Nations Plaza PH 37/38B compare to other co-ops in Turtle Bay?
This co-op is listed 98% above the average price for co-ops in Turtle Bay and has been on the market for 71 less days than the typical home in this area.
870 United Nations Plaza PH 37/38B is a 4-bedroom, 3.5-bath co-op for sale in New York NY 10017. On Prevu for 80 days at $3,450,000. This includes a recent price decrease of $500,000. This home is located in Turtle Bay. The median listing price for co-ops in this area is $1,400,000. Additional amenities include dishwasher, pets allowed, doorman, and washer/dryer. Explore more co-op listings in Manhattan.
RLS Data display by Prevu Real Estate LLC
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Based on information from the Real Estate Board of New York and/or other sources. This information is not verified for authenticity or accuracy and is not guaranteed and may not reflect all real estate activity. 2026 The Real Estate Board of New York, Inc., All rights reserved.
Rebate estimate is indicative only and based on listing price and estimated buyer's agent commission paid by owner, if applicable. Final rebates are subject to Terms of Use and may vary due to final negotiated transaction terms.