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635 Park Avenue MAISONETTENew York, NY 10065

For Sale

$1,850,000

Smart Buyer Rebate $23,125

635 Park Avenue offers a rare level of privacy and pedigree in the heart of the Upper East Side. Designed by legendary architect J. E. R. Carpenter, this intimate white-glove cooperative contains just thirteen grand residences and a single maisonette - a uniquely elegant and generously sized 2-bedroom home with 3 large bathrooms, moments from Central Park. Positioned on the corner of East 66th Street and Park Avenue, this sophisticated maisonette combines classic prewar architecture with thoughtful modern upgrades. High ceilings, original moldings, herringbone floors, and beautifully scaled rooms create a sense of understated grandeur throughout. The expansive living room enjoys natural light from Park Avenue and offers an exceptional setting for entertaining or quiet daily living. The kitchen has recently been updated with premium appliances, including a Bosch refrigerator, dishwasher, and oven, along with an in-unit Miele washer and dryer - seamlessly integrates contemporary convenience into the home's timeless character. Privately situated away from the entertaining spaces, the two bedrooms offer exceptional tranquility and generous proportions. A separate space can easily act as a home office or open dining room. Abundant closets and deeded private storage further enhance the home's livability. Residents of 635 Park Avenue enjoy an exceptionally discreet and attentive level of service, including a full-time doorman, porter, resident superintendent, fitness room, and private storage. Just moments from Madison Avenue boutiques, world-class dining, the museums, the Park Avenue Armory, and Central Park, this is Upper East Side living at its most refined.

Listed by June L Gottlieb

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Coldwell Banker Warburg

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(917) 826-9996

Listed by Steven A Gottlieb

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Coldwell Banker Warburg

Last updated July 28, 2026

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Source: REBNY #RLS20091282

RLS Data display by Prevu Real Estate LLC

Listing Facts

  • TypeCo-op
  • NeighborhoodLenox Hill
  • Bedrooms2
  • Bathrooms3
  • Days on Prevu78
  • HOA/Maint. Fees$6,637/month

Amenities

  • Dishwasher
  • Private Outdoor Space
  • Concierge

Location

Mortgage Calculator

Listing History

07/28/2026
Price Decreased
$1,850,000
05/14/2026
Listed by Coldwell Banker Warburg
$1,995,000

Estimated Closing Costs

Attorney Fees
$4,000
NYC Mansion Tax
$18,500
Bank Attorney
$1,500
Other Closing Costs
$4,000
Total
$28,000

Estimated closing costs are based on the list price of $1,850,000 and a 50% 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 635 Park Avenue MAISONETTE

Association

Amenities

  • Pets Allowed: Building Yes, No
  • Concierge: Doorman Full Time, Elevator Attendance Yes

Fees

  • Association Fee: $6,637.00 Monthly

Financial

  • Flip Tax: 1.5%
  • Flip Tax Remarks: ASK BROKER

Exterior

Construction

  • Number Of Units Total: 16
  • Stories Total: 13
  • Structure Type: High Rise
  • Year Built: 1913
  • Entry Level: 1

Interior

Features

  • Appliances: Dishwasher
  • Fireplace Features: Decorative
  • Fireplace: Yes
  • Fireplaces Total: 1
  • Interior Features: High Ceilings

Measurements

  • Living Area Units: SquareFeet

Rooms

  • Bathrooms Full: 3
  • Bathrooms Total Integer: 3
  • Bedrooms Total: 2
  • Rooms Total: 5

Other

Location

  • City Region: Manhattan
  • Subdivision Name: Lenox Hill
  • Tax Block: 01400
  • Tax Lot: 0069

Frequently Asked Questions

How many bedrooms and bathrooms does this co-op have?

There are 2 bedrooms and 3 bathrooms in this co-op at 635 Park Avenue MAISONETTE.

How does 635 Park Avenue MAISONETTE compare to other co-ops in Lenox Hill?

This co-op is listed 60% below the average price for co-ops in Lenox Hill and has been on the market for 96 less days than the typical home in this area.

635 Park Avenue MAISONETTE is a 2-bedroom, 3-bath co-op for sale in New York NY 10065. On Prevu for 78 days at $1,850,000. This includes a recent price decrease of $145,000. This property is located in Lenox Hill. The median listing price for co-ops in this area is $4,272,500. Additional amenities include private outdoor space, dishwasher, and doorman. View other co-op listings in Manhattan.

RLS Data display by Prevu Real Estate LLC The Registrant acknowledges each other RLS Broker's ownership of, and the validity of their respective copyright in, the Exclusive Listings that are transmitted over the RLS. The information is being provided by RLS at REBNY Listing Service, Inc. Information deemed reliable but not guaranteed. Information is provided for consumers' personal, non-commercial use, and may not be used for any purpose other than the identification of potential properties for purchase. This information is not verified for authenticity or accuracy and is not guaranteed and may not reflect all real estate activity in the market. 2026 RLS at REBNY Listing Service, Inc. All rights reserved. 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.

Full MLS Disclaimers

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.