Milton Coste

Licensed Real Estate Associate Broker

(917) 416-7433
400 E 56TH Street #MEDICAL
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Active For Sale Co-op

$1,695,000

$520 per sq ft

400 E 56TH Street #MEDICAL

Sutton Place, Manhattan

Plaza 400

MLS® #RLS20087931

RLS at REBNY

Listing by Serhant

Studio

1.5

Baths

3,257

Sq. Ft.

1969

Year Built

Quick Summary

Bedrooms Studio
Bathrooms 2 full, 1 half
Living Area 3,257 sq ft
Year Built 1969
Ownership Co-op
Maintenance $9,600/mo
Parking Garage
Neighborhood Sutton Place
Floor 1 of 40

Property Highlights

  • Views: Other
  • Exposure: East,South,West facing
  • Climate Control: Central Air

Property Details

Type Co-op
Ownership Stock Cooperative
Total Rooms 23
Baths 1 Full, 1 Half
Floor 1 of 40
View Other
Exposure East,South,West
Cooling Central Air
Pets Yes
Year Built 1969
Living Area 3,257 sq ft
Parking Garage Available
Structure Type HighRise
Basement Other
Block/Lot 01367/0001

Listing History

Event Date Price Change
Listed Apr 30, 2026 $1,695,000 -
Currently Apr 30, 2026 $1,695,000 -

Description

Unlock unparalleled flexibility in the heart of Sutton Place with this expansive 3,257-square-foot unit. Situated on the ground floor of the prestigious Plaza 400, this property is a rare "unicorn" in the Manhattan market: a legally zoned live/work co-op. Whether you are a medical professional seeking a flagship practice, an entrepreneur looking to eliminate a commute, or a savvy investor, this property offers a footprint and utility that are nearly impossible to find in the current inventory.

The space is defined by its versatility and scale, featuring two distinct entrances to maintain a professional boundary. Clients and patients can utilize the private street-level entrance, while the residential side is accessed through the building's elegant, white-glove lobby. Currently configured as a high-capacity medical suite, the layout is optimized for efficiency with multiple exam rooms, a dedicated reception area, and administrative zones. For those seeking a premier residential footprint, we have developed a proposed floor plan demonstrating how a portion of the space can be seamlessly reimagined into a sprawling 3-bedroom, 3-bathroom luxury residence while still maintaining a fully functional professional wing.

This property represents a powerful financial strategy, priced significantly below the average Midtown Manhattan price per square foot. By consolidating a luxury residence and a professional office into a single mortgage, owners can eliminate separate commercial rent, capitalize on significant tax advantages, and build long-term equity in a high-value asset. Triple exposures to the south, east, and west ensure the expansive interior remains bright and inviting throughout the day.

Plaza 400 is a world-class, self-managed co-op offering a lifestyle of convenience and prestige. Residents enjoy access to the Skytop Club, featuring a seasonal rooftop pool and lounge with 360-degree views of the skyline and East River. The building provides comprehensive service with a 24-hour doorman, concierge, and on-site management. Additional amenities include a state-of-the-art fitness center, children's playroom, on-premises valet garage, and bike storage. Notably, the monthly maintenance is all-inclusive, covering central air, heat, and electricity.

Located in the quiet, tree-lined enclave of Sutton Place, the building is minutes from the city's leading hospitals, corporate headquarters, and premier dining, providing a peaceful escape without sacrificing Midtown access. The co-op permits pied-à-terre use and guarantors.

All floor plans, dimensions, and conversion configurations are approximate estimates only and should be independently verified by the buyer and their architect or professional consultant.

Features & Amenities

Interior Features

Building Other Washer Hookup In Unit

Exterior Features

Building Roof Deck

Building Amenities

Bike Storage Common Playroom Concierge Indoor Pool

Building Information

Building Plaza 400
Building Data View Compliance & Permits
Total Units 628
Stories 40
Structure HighRise

Financial Details

Maintenance $9,600/mo

Sutton Place is a secluded and established residential pocket known for its low-traffic elegance and stunning East River views. This neighborhood offers a 'small-town' feel within the city, defined by its private parks and classic architecture. The housing stock is predominantly composed of grand, white-glove cooperatives, many of which feature expansive layouts and historic details that appeal to discerning buyers seeking privacy.

Sutton Place Live Market Data

View Neighborhood

Active Listings

267

Median Asking Price

$1000K

Median $/Sqft

$1,039

Avg Days on Market

N/A

New This Week

15

Price Reduced

37%

Sold (30 Days)

17

Median Sale Price

$848K

Live data from RLS at REBNY • Updated 4/30/26, 5:00 PM EST

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Location

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400 E 56TH Street #MEDICAL, Sutton Place, New York County

Virtual Tour

Floor Plans

Floor Plan 1
Floor Plan 2
Floor Plan 3
Floor Plan 4

Building Information

Official NYC property records for this building

1969
Year Built
57 years old
38
Floors
629
Residential Units
R10
Zoning District
Elevator Apartments

Tax & Assessment

Assessed Value: $128,852,550
Land Value: $15,346,350
Exemptions: $1,233,751

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

Lot Area: 46,763 SF
Building Area: 967,300 SF
Built FAR: 20.69
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 $9,600 per month. Confirm the exact amount with the listing broker before making an offer.

This property has 0 bedrooms and 1 full bathroom and 1 half bathroom.

The listed interior living area is 3,257 square feet. Verify dimensions independently during due diligence.

According to MLS records, the building was constructed in 1969, making it approximately 57 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 the listing broker for weight limits or breed restrictions.

At the current list price of $1,695,000 for 3,257 sq ft, the asking price per square foot is approximately $520. 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: RLS20087931
First Listed: 4/30/2026
On Market: 4/30/2026
Price Changed: 4/30/2026
Contract Date: 4/30/2026

Listing Courtesy of Serhant - PETER OCEAN

Listing Contact: (646) 627-5227

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 4/30/2026 at 9:00 PM UTC

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