New Development Opened in 2025

Last updated on Dec 8, 2025

643 Baltic Street

Boutique Park Slope development featuring four residences with premium finishes and private outdoor space for every unit. Minutes from eight subway lines, Prospect Park, and Brooklyn's cultural landmarks including Barclays Center and BAM.

Recent Sales (4) $1,552 Avg. price/ft²
All Units in Building (4)

Apt. 2

2 beds

2 baths

962 ft²

$1,575,000

$1,637

$1,695,000

Nov 26, 2025

Apt. 1

2 beds

1.5 baths

1,895 ft²

$2,270,000 +12.5%

$1,198

$2,400,000

Aug 28, 2025

Apt. 3

2 beds

2 baths

$1,600,000

Jul 21, 2025

Apt. 4

3 beds

2 baths

1,208 ft²

$2,200,000

$1,821

Jul 16, 2025

View Full Sales History

Overview of 643 Baltic Street

643 Baltic Street is a boutique new development in the heart of Park Slope, offering four distinct residences that range from a 947 square foot floor through unit to a 1,895 square foot duplex. The building features a mix of layouts including two floor through apartments, a ground level duplex with private garden, and a three bedroom penthouse duplex with 814 square feet of outdoor space across two roof terraces and a balcony.

All residences share premium finishes throughout, including white oak hardwood floors, Bertazzoni appliance packages, and Calacatta Quartz countertops. The kitchens feature open concept designs with custom cabinetry, while bathrooms are appointed with Brizo faucets and showerheads. Every unit includes central air and oversized windows that flood the spaces with natural light. Private outdoor space is a standout feature, with each residence offering either terraces, roof decks, or in the case of Residence No. 1, a landscaped garden complete with built in grill.

The building sits on a prime Park Slope block with exceptional transit connectivity, offering access to eight subway lines (2, 3, B, Q, D, N, R, 4, 5) within minutes. Residents enjoy proximity to Prospect Park, the Barclays Center, and Brooklyn Academy of Music, placing them at the center of one of Brooklyn's most culturally rich neighborhoods.

Doorman

None

Type

Condo

Year Built

1920

Converted: 2025

Apartments

4 (view all units)

Floors

Neighborhood

Park Slope (Brooklyn)

Min Down

20%

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Amenities

Pre War
Walk Up
Resident Storage
Central AC
Garden
Intercom
Rooftop Terrace
Terraces / Balconies

Area Map StreetView

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at Flatbush Ave 0.22 miles

at 4th Ave and Pacific 0.24 miles

at 4th Ave 0.24 miles

at Portland Ave and Fulton Ave 0.50 miles

Pros & Cons

Prime Park Slope location
New construction with premium finishes
Private outdoor space in all units
Access to 8 subway lines
White oak hardwood floors
Bertazzoni appliance package
Calacatta Quartz countertops
Central air conditioning
Oversized windows with natural light
Custom cabinetry
Brizo fixtures in bathrooms
Open concept kitchen design
Near Prospect Park
Near Barclays Center and Brooklyn Academy of Music
Private storage available
Built in grill in garden unit
Rooftop terraces

Walk up building
Limited boutique building with only 4 units

Sales History

View Full Closing History

Sales Summary

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Pricing Comparison of Similar Buildings

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Sun-drenched homes at the economic center of the world | Imminent occupancy

Studios starting at $1,110,000
1 beds starting at $1,495,000
2 beds starting at $2,505,000
3 beds starting at $4,450,000

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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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643 Baltic Street

Overview of 643 Baltic Street

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Pros & Cons

Sales History

Sales Summary

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