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St. John's Condominium, 259 21st Street - Condo in South Slope - Greenwood Heights
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259 21st Street

St. John's Condominium,
259 21st Street

Condo located in South Slope - Greenwood Heights, between Fifth Avenue & Sixth Avenue

$1,120 Avg. price/ft2 Apts. For Sale
$1,044 Avg. price/ft2 Recent Sales
(past 12 months)
  • Apartments For Sale (1)
  • Recent Sales (5)
  • All Units in Building (38)
Unit #
Beds
Baths
Size
Price / Ft2
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Listed on
Days on Market
Unit #
Beds
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Closing Price
Price / Ft2
Asking Price
Sold on
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Overview of St. John's Condominium at 259 21st Street

Situated in the vibrant South Slope - Greenwood Heights neighborhood, the highly sought-after Saint John's Condominium comprises 38 units within a meticulously renovated and converted historic building. Originally constructed as a grammar school in 1904, the property underwent a full transformation into loft condominiums in 2006. This pet-friendly residence boasts amenities such as a spacious elevator, bike room, and a dedicated live-in superintendent. Notably, it features an expansive 5,000-square-foot communal rooftop deck, offering panoramic views of the harbor, Statue of Liberty, and city skyline.

 

The architectural uniqueness of the building adds to its charm, set on a tranquil, tree-lined street. Conveniently located near the vibrant commercial strips of 5th and 6th Avenues, including Tambour, Sea Witch, Gasworks NYC clay studio, Under Minerva Gallery, Battle Hill Tavern, Luigi’s, and Hey Monday Coffee Shop. Proximity to R and F/G subways, B63 bus, numerous schools, daycare options, the playground at 6th Avenue and 19th Street, and a short walk to Prospect Park makes it an ideal Brooklyn living experience.

Year Built
1904
Converted: 2006
Apartments
38
Floors
5
Pets: Allowed
Neighborhood
Min Down
20%
38Apartments
View All Past
Sales & Rentals
in Building

Amenities

  • Pre War
  • Garden
  • Intercom
  • Rooftop Terrace
  • Washer/Dryer in building
  • Elevator
  • Bike Room
  • Live-In Superintendent

Shh... Many units sell without being publicly listed.

Learn more about off-market listings at St. John's Condominium!

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Nearby Subways

  1. R
at 4th Ave 0.30 miles

Sales History by Apartment Size

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Pricing Comparison of Similar Buildings

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520 Fifth Avenue
at the northwest corner of West 43rd Street
Midtown West
Iconic river-to-river views include the Empire State Building and Central Park. Elevated condos with magnificent arched windows, triple exposures, and soaring ceilings | Occupancy 2026.
Learn More