Skip to Content
  • Apartments
  • Overview & Photos
  • Maps
  • Ratings & Insider Info
  • Building Specialists
  • Floorplans
  • Sales Data & Comps
  • Similar Buildings
521 Park Avenue
Last updated on Jun 9, 2026

521 Park Avenue

521 Park Avenue, designed by William Boring in 1911, is a limestone building honored with international design awards. The 24-unit condominium features amenities like a full-time doorman, fitness center, and private storage, and allows pets, pied-a-terres, and flexible financing. Currently, 1 apartment is for sale.

521 Park Avenue Location Map

All Apartments For Sale

Unit #
Beds
Baths
Size
Price / Ft2
Price
Listed on
Days on Market
Thinking of selling? See how your apartment compares and who can sell it best. Start here
Unit #
Beds
Baths
Size
Closing Price
Price / Ft2
Asking Price
Sold on
Thinking of selling? See how your apartment compares and who can sell it best. Start here View Full Sales History

Overview of 521 Park Avenue

521 Park Avenue was designed by William Boring, an American-born architect who studied architecture at the Ecole des Beaux-Arts before returning to New York and joining the firm of McKim, Mead and White. The limestone building has been honored with numerous international design awards, including a gold medal for architecture from the Exposition Universelle in Paris in 1900.

521 Park Avenue was constructed as a cooperative in 1911, converted to a condominium in 1987, and currently has 24 units. The building has a full-time doorman, a live-in superintendent, a fitness center, and private storage that transfers with each unit. It also benefits from a location near Central Park, world-renowned restaurants, and top shopping. Pets, pied-a-terres, and flexible financing are allowed.

Doorman
Full Time
Type
Condo
Year Built
1911
Converted: 1987
Apartments
Floors
12
Pets: Allowed
Neighborhood
Min Down
20%

Amenities

  • FT Doorman
  • Pre War
  • Elevator
  • Fitness Center
  • Terraces / Balconies
{ "key" : "AIzaSyDquABdSLhathmwfnoTcYwA1BY6coZZyZk", "lat": 40.76359, "lng": -73.9689, "marker": { "icon": "https://img3.cityrealty.com/neo/i/w/amenities/base.png" } }

  1. N
  2. Q
  3. R
  4. 4
  5. 5
  6. 6
at Lexington Ave and 60th 0.09 miles
  1. F
at Lexington Ave and 63rd 0.16 miles
  1. M
  2. E
at 5th Ave and 53rd 0.41 miles

Pros & Cons

  • Doorman
  • Handsome building
  • Few apartments
  • Great location
  • Attractive entrance
  • Excellent transportation
  • Close to Subway
  • No garage
  • No health club
  • No sundeck

CityRealty Rating

27
/44
Architecture
+
28
/36
Location
+
21
/39
Features
+
9
Editor’s Points
=
85
CITYREALTY
RATING
  • How is the CityRealty Rating calculated?

    Architecture
    • 30+ remarkable
    • 20-29 distinguished
    • 11-19 average
    • < 11 below average
    Location
    • 27+ remarkable
    • 18-26 distinguished
    • 9-17 average
    • < 9 below average
    Features
    • 22+ remarkable
    • 16-21 distinguished
    • 9-15 average
    • < 9 below average

Sales Summary

Show:
Thinking of selling? See how your apartment compares and who can sell it best. Start here

Sales History by Apartment Size

View Full Closing History
Show:

Pricing Comparison of Similar Buildings

View Detailed Comparison
ONE11 Residences
between Sixth Avenue & Seventh Avenue
Midtown West
Billionaires’ Row residences with park views and hotel services. Elevated one- to four- bed condos from $1.295M. Reduced pricing | Immediate occupancy
Learn More