Milton Coste

Licensed Real Estate Associate Broker

(917) 416-7433

SOLD FOR $415,000

· Closed October 9, 2025

904 UNION Street #3A
Looking for something similar?
Closed For Sale Co-op

$415,000

904 UNION Street #3A

Park Slope, Brooklyn

MLS® #RLS20019615

RLS at REBNY

Listing by Corcoran Group

Studio

1

Bath

N/A

Sq. Ft.

1910

Year Built

Quick Summary

Bedrooms Studio
Bathrooms 1
Year Built 1910
Ownership Co-op
Maintenance $665/mo
Neighborhood Park Slope
Floor 3 of 4

Property Highlights

  • Views: Other
  • Fireplace: 1 fireplace
  • Style: WalkUp architecture

Property Details

Type Co-op
Ownership Stock Cooperative
Total Rooms 1
Baths 1 Full
Floor 3 of 4
View Other
Cooling Other
Pets Yes
Year Built 1910
Architectural Style WalkUp
Basement Other
Block/Lot 01066/0023

Description

904 Union Street, 3A

Experience all Grand Army Plaza has to offer with this charming prewar studio in the heart of Park Slope.

Steps from the entrance to Prospect Park and only two flights up, this lovely home offers open living space with extra-high 9.3 ft ceilings, a charming decorative mantle, original hardwood floors in pristine condition, and a full-sized eat-in kitchen with a dishwasher and ample cabinets. The bathroom has a window and a soaking tub.

Also featured are a comfortable and convenient built-in murphy bed, a giant walk-in closet and updated double-glazed windows.

This boutique pre-war co-op building is self-managed and beautifully maintained; it has strong financials and very low common charges. Included are free laundry (easily accessed from the unit's basement level), dedicated open storage for the unit and bicycle storage in the basement, as well as stroller parking in the lobby.

The prime Park Slope location is steps from Prospect Park and Grand Army Plaza, very near the 2/3 and B/Q trains, Brooklyn Public Library and Botanical Gardens, as well as the Park Slope Food Coop and all the conveniences of 7th Avenue.

Pets are considered on a case-by-case basis. Zoned for PS 321

Features & Amenities

Interior Features

Building Other Fireplace (1)

Exterior Features

None

Building Amenities

Storage

Building Information

Total Units 12
Stories 4
Style WalkUp

Financial Details

Maintenance $665/mo
Original Price $399,000
Sale Price $415,000
Previous Price $399,000

Park Slope is a well-known Brooklyn neighborhood, recognized for its tree-lined streets and preserved brownstones. Bordering the western edge of Prospect Park, the neighborhood offers convenient access to green space. The real estate market features a mix of historic townhouses, cooperatives, and modern condominiums, within walking distance of the park.

Park Slope Live Market Data

View Neighborhood

Active Listings

81

Median Asking Price

$1.75M

Median $/Sqft

$1,440

Avg Days on Market

N/A

New This Week

12

Price Reduced

12%

Sold (30 Days)

22

Median Sale Price

$1.67M

Live data from RLS at REBNY • Updated 3/23/26, 4:05 PM EST

Similar Listings in Park Slope

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Location

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904 UNION Street #3A, Park Slope, Kings County

Floor Plans

Floor Plan
MLS® ID: RLS20019615
First Listed: 4/28/2025
On Market: 4/28/2025
Price Changed: 10/12/2025
Closed: 10/9/2025
Contract Date: 4/28/2025

Listing Courtesy of Corcoran Group - Nathalie Roy

Listing Contact: (718) 501-8763

Listing information for certain New York City properties provided courtesy of the Real Estate Board of New York's Residential Listing Service (the "RLS"). The information contained in this listing has not been verified by the RLS and should be verified by the consumer. The listing information provided here is for the consumer's personal, non-commercial use. Retransmission, redistribution or copying of this listing information is strictly prohibited except in connection with a consumer's consideration of the purchase and/or sale of an individual property. This listing 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. This advertisement does not suggest that the broker has a listing in this property or properties or that any property is currently available.

Broker Commission Disclosure: Broker commissions are not set by law and are fully negotiable.

Buyer Notice: Planning to work with a buyer's broker? A Buyer Representation Agreement is required before your broker can show you properties, per REBNY/UCBA guidelines (effective 2025). You may attend open houses independently without one.

RLS at REBNY

RLS Data display by Keller Williams NYC. Data last updated on 3/23/2026 at 8:05 PM UTC

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