Milton Coste

Licensed Real Estate Associate Broker

(917) 416-7433

SOLD FOR $8,750,000

· Closed January 28, 2015

778 PARK Avenue #MAIS
Closed For Sale Co-op

$8,750,000

778 PARK Avenue #MAIS

Upper East Side, Manhattan

778 PARK AV BLDG CO

MLS® #RLS10089616

RLS at REBNY

Listing by Brown Harris Stevens Residential Sales LLC

4

Bedrooms

6

Baths

N/A

Sq. Ft.

1931

Year Built

Quick Summary

Bedrooms 4
Bathrooms 6
Year Built 1931
Ownership Co-op
Maintenance $10,782/mo
Neighborhood Upper East Side

Property Highlights

  • Exposure: East,South facing
  • Style: Prewar architecture
  • Character: Pre-war building (1931)

Property Details

Type Co-op
Ownership Stock Cooperative
Total Rooms 13
Baths null Full
Exposure East,South
Pets Yes
Cross Street E. 73rd St/E. 74th St
Year Built 1931
Architectural Style Prewar

Listing History

Event Date Price Change
Listed Jan 28, 2015 $12,000,000 -
Currently May 14, 2026 $8,750,000 -27.1%

Description

THE BUILDING
Completed in 1931, this 18-story English Renaissance cooperative built by renowned architect Rosario Candela stands on the northwest corner of East 73rd Street and Park Avenue, and is often heralded as one of New York's finest residential buildings.

THE RESIDENCE
The first unique characteristic of this apartment is having its own private address: 73 East 73rd Street. It may also be accessed from the main lobby of 778 Park Avenue. Through the elegant wrought-iron doors on East 73rd Street, one enters the marble-floored 18-foot front hall which opens onto an extraordinary 27-foot long gallery. A graceful curved stair leading to the bedrooms above anchors the gallery which also leads to the corner living room, library, formal dining room, a large guest closet and powder room, as well as to a private corridor with a staff suite, service entry, and an exceptionally grand kitchen.

With two windows on Park and two windows on East 73rd Street, facing south and east, the 29-foot long living room is bathed in light throughout the day and includes a large wood-burning fireplace. The library has built-in bookshelves, a wood-burning fireplace, a full bath, and two windows facing Park Avenue. With two tall windows on East 73rd Street and a wood-burning fireplace, the formal dining room measures an astonishing 27' x 18' and can accommodate a variety of table arrangements. Opposite the formal dining room is a walk-in coat closet which leads to a powder room.

In the back of the first floor, spanning the full width of the apartment, a large chef's kitchen and pantry are connected by a pass-through and include two oversized walk-in closets as well as doors leading onto the formal dining room and the corridor leading to the service entry - an ideal configuration for entertaining. There is also a stairway from the pantry leading to the upper bedroom floor.

The staff suite off the kitchen includes a windowed full bath and closet. There is a second large coat closet for staff in the corridor which leads to the service exit, accessible from the lobby.

With additional access available from the second floor landing, the upper level of the duplex maisonette contains a large master suite as well as three additional bedrooms and two full baths. The curved stair from the lower level gallery leads to a landing, proceeding to a double-door entry to the master bedroom which overlooks East 73rd Street. Two large walk-in closets and an en-suite bath make this the perfect master suite for this residence. A separate corridor continues to three bedrooms and two full baths, as well as the rear stair leading down to the kitchen and pantry.

THE BUCKLEY LEGACY
Capitalizing on the maisonette's gracious scale and well-arranged entertaining space, Mr. and Mrs. William F. Buckley, Jr. began a long and famous history of dinners and events which spanned the social gamut, from international political figures, notable film and television stars, to quiet family dinners. This is a rare opportunity to acquire a piece of New York's intellectual history.

Building Information

Financial Details

Maintenance $10,782/mo
Original Price $12,000,000

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

337

Median Asking Price

$1.67M

Median $/Sqft

$1,503

Avg Days on Market

N/A

New This Week

21

Price Reduced

29%

Sold (30 Days)

1

Median Sale Price

$460K

Live data from RLS at REBNY • Updated 5/14/26, 5:39 PM EST

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Location

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778 PARK Avenue #MAIS, Upper East Side, New York County • Near E. 73rd St/E. 74th St

Floor Plans

Floor Plan 1

Building Information

Official NYC property records for this building

1931
Year Built
95 years old
20
Floors
18
Residential Units
R10
Zoning District
Elevator Apartments Historic District: Upper East Side Historic District

Tax & Assessment

Assessed Value: $18,173,250
Land Value: $3,555,000
Exemptions: $0

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

Lot Area: 8,939 SF
Building Area: 120,073 SF
Built FAR: 13.43
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 $10,782 per month. Confirm the exact amount with the listing broker before making an offer.

This property has 4 bedrooms and 6 full bathrooms.

According to MLS records, the building was constructed in 1931, making it approximately 95 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 the listing broker.

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: RLS10089616
First Listed: 1/28/2015
Closed: 1/28/2015
Contract Date: 3/19/2010

Listing Courtesy of Brown Harris Stevens Residential Sales LLC - Paula Delnunzio

Listing Contact: (212) 906-9207

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 5/14/2026 at 9:39 PM UTC

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