Milton Coste

Licensed Real Estate Associate Broker

(917) 416-7433
100 UNITED NATIONS Plaza #PH50B

For Sale · Listing by Corcoran Group

100 UNITED NATIONS Plaza #PH50B

Turtle Bay, Manhattan

$4,900,000

Interested in this property?
Active For Sale • Condo

$4,900,000

$1,621 per sq ft

100 UNITED NATIONS Plaza #PH50B

Turtle Bay, Manhattan

MLS® #RLS20108985

RLS at REBNY

Listing by Corcoran Group

3
Bedrooms
3.5
Baths
3,023
Sq. Ft.
1986
Year Built

Quick Summary

Bedrooms 3
Bathrooms 4 full, 2 half
Living Area 3,023 sq ft
Year Built 1986
Ownership Condo
HOA/Common Charges $5,638/mo
Property Taxes Contact for details
Parking Garage
Neighborhood Turtle Bay
Floor 50 of 52

Property Highlights

  • Views: Panoramic, River, Skyline
  • Exposure: North,South,West facing
  • Outdoor Space: Wrap Around

Property Details

Type Condo
Ownership Condominium
Total Rooms 7
Baths 3 Full, 2 Half
Floor 50 of 52
View Panoramic, River, Skyline
Exposure North,South,West
Pets NumberLimit, Yes
Year Built 1986
Living Area 3,023 sq ft
Parking Garage Available
Structure Type HighRise
Basement Other
Block/Lot 01341/1657

Listing History

Event Date Price Change
Listed Sep 14, 2026 $4,900,000 -
Currently Oct 31, 2026 $4,900,000 -

Recent Sales in This Building

What other apartments here closed for in the last three years, as reported to the REBNY Listing Service (RLS).

Closed Unit Beds Sold For Per Sq Ft
Oct 14, 2026 Unit 16D 1 BR $790,000 $1,060
Sep 29, 2026 Unit 14F 1 BR $690,000 $1,015
Sep 2, 2026 Unit 5A 2 BR $1,400,000 $1,055
See every sale in this building

Description

100 United Nations Plaza Penthouse Duplex with Panoramic NYC Skyline Views Experience elevated Manhattan living in this rarely available 50th-floor penthouse duplex at 100 United Nations Plaza Condominium , featuring two expansive wrap-around terraces and breathtaking panoramic views of the New York City skyline, East River, and iconic landmarks. Located in the heart of Turtle Bay in Midtown East , this mint-condition luxury condominium offers approximately 3,023 square feet of interior living space and 1,113 square feet of private outdoor space. The exceptional three-bedroom, three-full-bathroom, two-powder-room residence is thoughtfully designed, with expansive living and entertaining spaces on the main level and three private bedroom suites upstairs. A dramatic approximately 55-foot gallery welcomes you into the main living level, framed by floor-to-ceiling windows and unobstructed western exposures. The expansive corner living room features a tray ceiling, recessed lighting, wet bar, concealed flat-screen television, and access to the lower wrap-around terrace. The adjoining corner dining room also opens onto the terrace, creating an ideal setting for outdoor dining, entertaining, and enjoying spectacular sunsets over Manhattan. The spacious, windowed kitchen is appointed with custom cabinetry, granite countertops, marble wall tile, and professional-grade Viking, Wolf, and Sub-Zero appliances. A pair of dishwashers and a full-size wine refrigerator add convenience for entertaining. Just beyond the kitchen, a stacked washer and dryer and a custom-designed, windowed home office with an en-suite powder room provide additional functionality. The upper level is dedicated to three generously proportioned bedrooms, each with its own en-suite windowed bathroom. The private corner primary suite offers direct access to the upper wrap-around terrace, five built-in wardrobes, and a custom-outfitted walk-in closet. Its luxurious windowed bathroom features floor-to-ceiling marble, an oversized glass-enclosed shower with dual built-in rain showerheads, and a custom vanity with two vessel sinks. The second bedroom enjoys a corner exposure and sliding-door access to the terrace, while the third bedroom features a bright southern exposure. A second powder room on this level adds convenience for residents and guests. Additional features include touchscreen remote-controlled central heating and air conditioning, automatic roller shades throughout, custom lighting, a built-in audio system, custom cabinetry, hardwood floors, and recessed lighting. Both private wrap-around terraces have been upgraded with halogen lighting and a watering system. White-Glove Luxury Living at 100 United Nations Plaza Situated on East 48th Street at First Avenue, 100 United Nations Plaza is a distinguished full-service luxury condominium in Manhattan's Turtle Bay neighborhood . Residents are welcomed by beautifully landscaped gardens and cascading waterfalls. Building amenities and services include a 24-hour doorman, valet and concierge service, an on-site management office, a renovated lobby and residents' lounge, a recently renovated fitness center, a common laundry room, and direct access to an attended parking garage. Conveniently located near Midtown East transportation, neighborhood shopping, restaurants, and the United Nations, the building offers an exceptional combination of privacy, service, and accessibility. One dog per residence is permitted, with a maximum weight of 50 pounds. Showings by appointment only.

Features & Amenities

Interior Features

Separate Formal Dining Room Storage Building Other Washer Hookup In Unit

Exterior Features

Building Courtyard Private Outdoor Space Over60 Sqft Wrap Around

Building Amenities

Bike Storage Cold Storage Elevators

Appliances

Dishwasher

Building Information

Building Data View Compliance & Permits
Total Units 236
Stories 52
Structure HighRise

Financial Details

Common Charges $5,638/mo
RE Taxes Contact for details

Turtle Bay is a refined and diplomatic corridor, home to the United Nations Headquarters and numerous international consulates. The neighborhood is famous for the historic Turtle Bay Gardens and its tree-lined streets. Real estate in Turtle Bay offers a wide selection, from elegant pre-war townhouses to modern luxury condominiums that provide a low-traffic residential atmosphere just steps away from the bustle of Midtown.

Turtle Bay Live Market Data

View Neighborhood

Active Listings

112

Median Asking Price

$1.30M

Median $/Sqft

$1,443

Avg Days on Market

N/A

New This Week

7

Price Reduced

32%

Sold (30 Days)

16

Median Sale Price

$890K

Live data from RLS at REBNY • Updated 10/31/26, 12:28 PM EST

Similar Listings in Turtle Bay

View All

Location

Loading map...

100 UNITED NATIONS Plaza #PH50B, Turtle Bay, New York County

Floor Plans

Floor Plan 1

Building Information

Official NYC property records for this building

1984
Year Built
42 years old
49
Floors
236
Residential Units
C1-9
Zoning District
Condominiums

Tax & Assessment

Assessed Value: $63,980,556
Land Value: $9,495,005
Exemptions: $2,256,084

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

Lot Area: 25,179 SF
Building Area: 357,793 SF
Built FAR: 14.21
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 common charges are $5,638 per month. Confirm the exact amount with Milton Coste before making an offer.

This property has 3 bedrooms and 3 full bathrooms and 2 half bathrooms.

The listed interior living area is 3,023 square feet. Verify dimensions independently during due diligence.

According to MLS records, the building was constructed in 1986, making it approximately 40 years old.

This listing is a condominium. Buyers receive a deed to their individual unit and own their space outright, subject to condo association rules.

Pets are permitted at this property: 50 lbs 1 Dog Allowed for Unit Owners,Building Pets Allowed Comments:50 lbs 1 Dog Allowed for Unit Owners. Contact Milton Coste for weight limits or breed restrictions.

At the current list price of $4,900,000 for 3,023 sq ft, the asking price per square foot is approximately $1,621. 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: RLS20108985
First Listed: 8/12/2026
On Market: 9/14/2026
Contract Date: 7/31/2026

Listing Courtesy of Corcoran Group - Michael J Weiss

Listing Contact: (917) 656-8444

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 10/31/2026 at 4:28 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

Turtle Bay Market Update

16 sales last 30 days · $1.30M median · 7 months supply

Read Full Report

New listings in this neighborhood

Quick Facts

Status Active Type Condo Neighborhood Turtle Bay Borough Manhattan
County New York
Floor 50 of 52
Year Built 1986
First Listed 8/12/2026
Parking Garage
Living Area 3,023 sqft
Common Charges $5,638/mo

Monthly Costs Estimate

Down Payment 20%

$980,000

Interest Rate Loading...

Source: Freddie Mac PMMS

Loan Term 30 years

Est. Monthly Payment

$0

Principal & Interest $0
PMI (under 20% down) $0
Common Charges $5,638
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 $3M to $4,999,999 at 1.50%, applied to the whole purchase price. It is due in cash at closing and cannot be financed.

Estimated mansion tax at asking

$73,500

Run the numbers on a different offer price

Estimate based on the asking price. Confirm your own obligation with your real estate attorney.

Back to Search

Find more properties

Buying a Condo? Start Here

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

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

Read article

Condo Due Diligence Checklist

What to review before signing: financials, reserve fund, offering plan.

Read article

How to Read a Condo Offering Plan

Decode the offering plan before you commit to any new development.

Read article

NYC Mansion Tax: 2026 Guide

How the tiered mansion tax works for purchases over $1M.

Read article

Interested in this property?

Are you already working with an agent? (optional)

Your info is secure and never shared.

You're contacting Milton Coste, a buyer's agent. Before any private showing, New York brokerage rules require a short non-exclusive agreement. Milton walks you through it before you sign anything. Broker commissions are not set by law and are fully negotiable. How working together works.

Call Text Email