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Halcyon, 305 East 51st Street, NYC - Condo Apartments
Halcyon, 305 East 51st Street, NYC - Condo Apartments
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305 East 51st Street

Halcyon,
305 East 51st Street

Doorman condo located in Turtle Bay/United Nations, between Second Avenue & First Avenue

305 East 51st Street Location Map
  • Apartments For Sale (8) $1,688 Avg. price/ft2
  • Recent Sales (14) $1,563 Avg. price/ft2
  • All Units in Building (123)
Unit #
Beds
Baths
Size
Price / Ft2
Price
Listed on
Days on Market
Apt. 6G
(12 Photos)
3 beds
3 baths
2,144 ft2
$1,306
$2,800,000 -3.4%
Oct 28, 2025
37 days
Apt. RU5H
(13 Photos)
1 bed
2 baths
1,164 ft2
$1,418
$1,650,000
Oct 7, 2025
58 days
Apt. 7D
(21 Photos)
2 beds
2.5 baths
1,691 ft2
$1,419
$2,400,000
Oct 3, 2025
62 days
Apt. 89B
(25 Photos)
4 beds
4.5 baths
3,078 ft2
$1,608
$4,950,000
Sep 11, 2025
84 days
Apt. 28A
(22 Photos)
3 beds
2,400 ft2
$2,040
$4,895,000
Sep 9, 2025
86 days
Apt. 19A
(13 Photos)
3 beds
3 baths
1,800 ft2
$1,944
$3,499,000
Aug 15, 2025
111 days
Apt. 30C
(18 Photos)
3 beds
3 baths
2,440 ft2
$2,029
$4,950,000
Mar 28, 2025
251 days
Apt. 26C
(12 Photos)
3 beds
3 baths
2,502 ft2
$1,739
$4,350,000 -5.4%
Oct 7, 2024
423 days
Unit #
Beds
Baths
Size
Closing Price
Price / Ft2
Asking Price
Sold on
Show More Closed Sales

Overview of Halcyon at 305 East 51st Street

The Halcyon is a 32 story luxury condominium tower at 305 East 51st Street in Midtown East's Turtle Bay neighborhood, designed by SLCE Architects with interiors by S. Russell Groves. The building houses 123 residences ranging from studios to four bedrooms within a glass and bronze window wall structure sitting atop a limestone base. Completed in 2015, the tower was developed by HFZ Capital Group after they acquired the project from the original developer, Kennelly Development Company.

Residences feature consistent high end finishes throughout, including 10 foot ceilings, floor-to-ceiling double pane windows, and wide plank smoked oak flooring. All units include custom Poliform kitchens with Silver Fox lacquered cabinetry, Calacatta Gold marble countertops and backsplashes, and premium Miele appliances including refrigerators, ovens with gas cooktops, and dishwashers, plus Sub-Zero wine coolers. The white statuary marble bathrooms feature bronze Kohler fittings, deep soaking tubs, radiant heated floors, and glass enclosed showers. Each unit includes in-unit Bosch washer and dryer and individual climate control systems.

The building offers an extensive amenities package anchored by a 52 foot heated indoor swimming pool located on the 22nd floor, along with a fitness center featuring double height windows and panoramic city views. Additional amenities include the Aqua Spa with steam room and sauna, a Sky Lounge on the 21st floor with catering kitchen and media room, a residential library opening to a landscaped courtyard with fire pit, children's playroom, golf simulator room, and bike storage. The tower provides 24 hour doorman and concierge services, with on-site parking available for an additional fee.

Many of the building's most desirable units are corner residences with multiple exposures offering unobstructed city and river views, while several units feature private terraces, including one notable residence with an approximately 900 square foot outdoor space. Upper floor units, particularly those on the 25th floor and above, showcase panoramic views of the Chrysler Building and Midtown skyline. The building's prime Turtle Bay location provides convenient access to Grand Central Terminal, the United Nations, and the neighborhood's dining and cultural attractions.

Year Built
2015
Apartments
123
Floors
32
Pets: Allowed
Neighborhood
Min Down
20%
123Apartments
View All Past
Sales & Rentals
in Building

Amenities

  • Concierge
  • FT Doorman
  • High-Rise
  • Resident Storage
  • Central AC
  • Full Service Garage
  • Garden
  • Health Club
  • Pool
  • Rooftop Terrace
  • Washer/Dryer in building
  • Elevator
  • Event Room
  • Children's Playroom
  • Lounge
  • Fitness Center
  • On-Site Parking
  • Outdoor Entertainment Space
  • Courtyard
  • Laundry Room
  • In-Unit Washer/Dryer
  • Terraces / Balconies
{ "key" : "AIzaSyDquABdSLhathmwfnoTcYwA1BY6coZZyZk", "lat": 40.75558, "lng": -73.96757, "marker": { "icon": "https://img3.cityrealty.com/neo/i/w/amenities/base.png" } }

Nearby Subways

  1. M
  2. 6
  3. E
at Lexington Ave and 53rd 0.16 miles
  1. N
  2. Q
  3. R
  4. 4
  5. 5
at Lexington Ave and 60th 0.48 miles

Pros & Cons

  • 24 hour doorman and concierge services
  • Custom Poliform kitchens with Calacatta Gold marble
  • Miele and Sub-Zero appliances
  • In-unit washer and dryer
  • White marble master bathrooms with deep soaking tubs
  • Radiant heated bathroom floors
  • Wide plank oak flooring
  • Floor-to-ceiling double pane windows
  • 52 foot heated indoor pool
  • State-of-the-art fitness center with double height windows
  • Spa amenities including steam room, sauna, and treatment room
  • Yoga and dance studio
  • Rooftop sundeck with landscaped terrace
  • Children's playroom
  • Resident library
  • Landscaped courtyard with fire pit
  • Golf simulator room
  • On-site parking garage
  • Pet friendly building
  • Prime Midtown East location near Grand Central
  • Close to Subway
  • Sky lounge with dining room and catering kitchen
  • Bicycle storage room
  • Live-in resident manager
  • Many apartments
  • No balconies

CityRealty Rating

25
/44
Architecture
+
25
/36
Location
+
21
/39
Features
+
9
Editor’s Points
=
80
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

Broker & Buyer Comments

This "stunning" Midtown East luxury residence offers "breathtaking" common spaces with an "impressive" 21st floor amenity collection featuring a pool, outdoor fire pit and golf simulator. Set in an "increasingly sophisticated" neighborhood, the building captivates with its "beautiful" lobby and hallway designs.

Sales History by Apartment Size

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Pricing Comparison of Similar Buildings

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Editorial Coverage

Alternate Addresses

  • 301 East 51st Street
  • 303 East 51st Street
  • 307 East 51st Street
  • 309 East 51st Street
  • 964 Second Avenue
  • 966 Second Avenue
between Gold Street & Flatbush Avenue Extension
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