Skip Navigation
Printed from StreetEasy.com at 09:47 AM, Feb 25 2026

404 East 66th St. 3K

Located at 404 East 66th Street 404 East 66th Street, 3K, New York, NY Condo in Lenox Hill, Upper East Side
This unit is not currently listed on StreetEasy Other units available in this building: 1 active sales listing | 1 active rental listing
studio, 1 bath, 550 ft²

Welcome to Hardenbrook House, the Upper East Side’s premier full-service condo building and location of the newest, largest alcove studio to hit the market. Measuring at 550 square feet, unit 3K is the perfect home for someone who appreciates the efficient manner in which this line is laid out.

Welcome to Hardenbrook House, the Upper East Side’s premier full-service condo building and location of the newest, largest alcove studio to hit the market. Measuring at 550 square feet, unit 3K is the perfect home for someone who appreciates the efficient manner in which this line is laid out. Upon entering, you will find a wall across from the kitchen lined with 3 large closets, one of which is a pantry. As you enter the airy open space is a nook perfect for a high-top table set which is already appointed with a modern, tasteful pendant chandelier. Continuing toward the south-facing wall of windows is the living/sleeping area that is large enough to configure in multiple ways. Across from the sleeping area is a roomy bathroom that is complete with a walk-in changing area that includes another large, double-wide closet with sliding, mirrored door. This building is centrally located just a short walk to various subway lines, including the 72nd Street N/Q, as well as the 68th Street 4/6 train and the Lexington Ave./63rd Street F/Q lines. Additionally this building is around the corner from the New York Weill Cornell Medical Center and the Hospital for Special Surgery, not to mention in close proximity to all the restaurants, shopping and sites that the Upper East Side has to offer. Hardenbrook House Condominium consists of 158 units and features a full-time doorman, laundry room, parking garage, and a beautifully appointed courtyard. Ongoing assessment of $77.99 to be allocated to elevator modernization as well as hallway/lobby improvements. Photos partially virtually staged. Gifting, pied-a-terres and co-purchasing are all welcome and pets are allowed.


Want to see who currently owns this property? Register now - it's free
See a problem with this listing? Report it here.

About the Building

404 East 66th Street  New York, NY 10065

Condo in Lenox Hill

  • 158 Units
  • 13 Stories
  • 1959 Built

Sales listings: 1 in contract and 106 previous
Rentals listings: 1 active and 212 previous
Documents and Permits: 305 documents

Unit History

Nearby

Transportation

  • Q at 72nd Street

    0.25 miles

  • F Q at 63rd Street

    0.33 miles

  • N R 4 5 6 W at Lexington Av-59 St

    0.41 miles

  • 6 at 68th St

    0.42 miles

  • F Q at Lexington Av

    0.43 miles

View subway lines on Google Maps

Schools

Schools zoned for this address:
J.H.S. 167 Robert F. Wagner

(06,07,08,SE)

P.S. 183 Robert L. Stevenson

(PK,0K,01,02,03,04,05,SE)

Disclaimer: School attendance zone boundaries are not guaranteed to be accurate – they are provided by a third party and subject to change. Check with the applicable school district prior to making a decision based on these boundaries.