305 Twenty Third at 305 23rd Street: Apartments for Sale & Rent

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New Development Opened in 2021

Last updated on Feb 7, 2026

305 Twenty Third,
305 23rd Street

305 Twenty Third is a boutique condominium in South Slope-Greenwood Heights with tasteful design and thoughtful layouts. The building offers amenities like a lounge and roof deck, and is close to local attractions and transportation.

Recent Sales (1) $1,512 Avg. price/ft²
All Units in Building (11)

Apt. PHW

3 beds

2.5 baths

1,422 ft²

$2,150,000

$1,512

Nov 24, 2025

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Overview of 305 Twenty Third at 305 23rd Street

In a peaceful section of South Slope-Greenwood Heights, 305 Twenty Third is a context-sensitive boutique condominium with a tasteful façade, wood-accented entries, and abundant greenery. There are no more than two units per floor, and all units feature thoughtful layouts, contemporary open kitchens, and private primary suites with generous closet space and sumptuous baths. Amenities include a lounge, bike room, deeded parking, a common roof deck. Park Slope, Greenwood Cemetery, local restaurants, good schools, and the F/G/R trains are close by.

Doorman

None

Type

Condo

Year Built

2020

Apartments

11 (view all units)

Floors

Pets: Allowed

Neighborhood

South Slope - Greenwood Heights (Brooklyn)

Min Down

20%

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Amenities

Pre War
Central AC
Garden
Lounge
Rooftop Terrace
On-Site Parking
In-Unit Washer/Dryer
Terraces / Balconies

Area Map StreetView

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at 4th Ave 0.36 miles

Sales History

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Editorial Coverage

Alternate Address

305 23 Street

One United Nations Park

between East 39th Street & East 40th Street

Murray Hill

One United Nations Park is an unprecedented interplay of privacy and light—a balance that reflects the architecture’s bold exterior and luminous interiors.

1 beds starting at $1,350,000
3 beds starting at $6,250,000
4 beds starting at $4,870,000

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One United Nations Park - Exterior View - Building

One United Nations Park - Exterior/Interior View - Terrace and Living Room

One United Nations Park - Interior - Corner View - Living Room

One United Nations Park - Interior - Living Room - View of ESB

One United Nations Park - Interior View - Colorful Living Room

RLS IDX Data display by CityRealty.com, LLC. 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 The Real Estate Board of New York, Inc., All rights reserved. IDX information is provided exclusively for consumers’ personal, non-commercial use and it may not be used for any purpose other than to identify prospective properties consumers may be interested in purchasing.

All information furnished regarding property for sale, rental or financing is from sources deemed reliable, but no warranty or representation is made as to the accuracy thereof and same is submitted subject to errors, omissions, change of price, rental or other conditions, prior sale, lease or financing or withdrawal without notice. All dimensions are approximate. For exact dimensions, you must hire your own architect or engineer and for no listing shall the number of bedrooms listed be considered a legal conclusion.

All closed sales data has been provided by the New York City Department of Finance via the Automated City Register Information System (ACRIS). No warranty or representation is made as to the accuracy of any data provided by ACRIS or any other sources.

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An equal housing opportunity

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305 Twenty Third,305 23rd Street

Overview of 305 Twenty Third at 305 23rd Street

Maps &3D Aerial Views

Amenities

Sales History

Sales Summary

Sales History by Apartment Size

Pricing Comparison of Similar Buildings

Editorial Coverage

Alternate Address

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305 Twenty Third,
305 23rd Street

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