Milton Coste

Licensed Real Estate Associate Broker

(917) 416-7433
21 E 79th Street #7

For Sale · Listing by Compass

21 E 79th Street #7

Upper East Side, Manhattan

$8,950,000

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Active For Sale • Co-op

$8,950,000

21 E 79th Street #7

Upper East Side, Manhattan

MLS® #RLS20101753

RLS at REBNY

Listing by Compass

4
Bedrooms
4.5
Baths
N/A
Sq. Ft.
1930
Year Built

Quick Summary

Bedrooms 4
Bathrooms 5 full, 1 half
Lot Size 6,232.37 sq ft
Year Built 1930
Ownership Co-op
Maintenance $13,802/mo
Neighborhood Upper East Side
Floor 7 of 14

Property Highlights

  • Views: City, Skyline
  • Exposure: East,North,South,West facing
  • Fireplace: 1 fireplace

Property Details

Type Co-op
Ownership Stock Cooperative
Total Rooms 10
Baths 4 Full, 1 Half
Floor 7 of 14
View City, Skyline
Exposure East,North,South,West
Cooling Central Air
Pets Yes, CatsOk, DogsOk
Year Built 1930
Structure Type HighRise
Flooring Hardwood
Furnished Unfurnished
Lot Size 6,232.37 sq ft
Block/Lot 01491/0012

Listing History

Event Date Price Change
Listed Nov 10, 2026 $8,950,000 -
Currently Nov 10, 2026 $8,950,000 -

Description

A Full-Floor Prewar Sanctuary Off Fifth Avenue: Step directly from a keyed elevator into this full-floor residence in a white-glove co-op with only fourteen residences. Located steps from Central Park, this home marries the grand architectural scale of 1929 with the updates of modern living. Apartment 7 offers privacy, views, and many original details still remain, such as original herringbone floors, mahogany doors, dentil moldings, three wood-burning fireplaces and 10 ft ceilings. There are 4 bedrooms, an eat-in kitchen, a staff room, and a full laundry room. The Entertaining Areas: A private elevator landing leads you into a large central gallery, with the living room, dining room, and den/library each just steps away. The living room is bathed in southern light through four oversized picture windows and offers a quintessential NYC view, over the historic mansions of 79th Street, the 57th Street skyline in the distance, and a beautiful outlook of Central Park to the west. The southern facing den/library has beautiful custom bookshelves and another wood-burning fireplace. Curved mahogany pocket doors, separate this room from the living room. The formal dining room, crowned by a graceful coved ceiling, is large enough to seat 12 and has windows facing west and north. It leads into a large, windowed eat-in kitchen with a separate breakfast nook. The Sleeping Chambers: Cleverly separated from the public spaces via a discrete gallery corridor is the bedroom wing. The primary suite faces south and is bathed in sunlight, with yet another, wood-burning fireplace. A windowed marble bathroom features a steam shower and a deep soaking tub. Down the hall are two additional bedrooms, each with an ensuite bath and ample closets, along with a fourth bedroom with a nearby bath. At the end of the hall, there's a full laundry room equipped with a sink and extra storage, along with a staff room and its own bath. Building Details: Two private storage units transfer with the sale. The co-op permits 50% financing, and a 2% flip tax is payable by the purchaser.

Features & Amenities

Interior Features

Eat In Kitchen Building Washer Dryer Install Allowed Common On Floor Common Area Laundry Room Flooring: Hardwood Fireplace (1)

Building Amenities

Elevators Storage

Building Information

Building Data View Compliance & Permits
Total Units 15
Stories 14
Structure HighRise

Financial Details

Maintenance $13,802/mo

The Upper East Side remains the gold standard for classic New York elegance. Known for 'Museum Mile' and its low-traffic, tree-lined streets, the neighborhood offers a refined lifestyle away from the midtown bustle. While famous for its historic cooperatives, the area has seen a recent surge in ultra-luxury new construction condos, particularly along the Second Avenue Subway corridor, making it a top choice for both traditionalists and modern buyers.

Upper East Side Live Market Data

View Neighborhood

Active Listings

308

Median Asking Price

$1.72M

Median $/Sqft

$1,443

Avg Days on Market

N/A

New This Week

14

Price Reduced

36%

Sold (30 Days)

48

Median Sale Price

$1.75M

Live data from RLS at REBNY • Updated 11/10/26, 3:45 PM EST

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Location

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21 E 79th Street #7, Upper East Side, New York County

Virtual Tour

Floor Plans

Floor Plan 1
Floor Plan 2

Building Information

Official NYC property records for this building

1950
Year Built
76 years old
2
Floors
1
Residential Units
R4
Zoning District
One Family Dwellings

Tax & Assessment

Assessed Value: $46,620
Land Value: $11,280
Exemptions: $0

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

Lot Area: 1,800 SF
Building Area: 1,224 SF
Built FAR: 0.68
Allowed FAR: 1

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 $13,802 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 4 bedrooms and 4 full bathrooms and 1 half bathroom.

According to MLS records, the building was constructed in 1930, making it approximately 96 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 [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: RLS20101753
First Listed: 7/6/2026
On Market: 11/10/2026
Price Changed: 11/10/2026
Contract Date: 6/21/2026

Listing Courtesy of Compass - Lauren Cohen Starr

Listing Contact: (917) 319-9802

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 11/10/2026 at 8:45 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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Upper East Side Market Update

48 sales last 30 days · $1.72M median · 6.4 months supply

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Quick Facts

Status Active Type Co-op Neighborhood Upper East Side Borough Manhattan
County New York
Floor 7 of 14
Year Built 1930
First Listed 7/6/2026
Maintenance $13,802/mo

Monthly Costs Estimate

Down Payment 20%

$1,790,000

Interest Rate Loading...

Source: Freddie Mac PMMS

Loan Term 30 years

Est. Monthly Payment

$0

Principal & Interest $0
PMI (under 20% down) $0
Maintenance $13,802
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 $5M to $9,999,999 at 2.25%, applied to the whole purchase price. It is due in cash at closing and cannot be financed.

Estimated mansion tax at asking

$201,375

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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