Milton Coste

Licensed Real Estate Associate Broker

(917) 416-7433
420 12TH Street #F3L
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Active For Sale Co-op

$2,495,000

$1,386 per sq ft

420 12TH Street #F3L

Park Slope, Brooklyn

Ansonia Court

MLS® #RLS20079051

RLS at REBNY

Listing by Corcoran Group

3

Bedrooms

3.5

Baths

1,800

Sq. Ft.

1881

Year Built

Quick Summary

Bedrooms 3
Bathrooms 3 full, 1 half
Living Area 1,800 sq ft
Year Built 1881
Ownership Co-op
Maintenance $2,370/mo
Neighborhood Park Slope
Floor 3 of 4

Property Highlights

  • Views: Other
  • Style: WalkUp architecture
  • Character: Pre-war building (1881)

Property Details

Type Co-op
Ownership Stock Cooperative
Total Rooms 6
Baths 2 Full, 1 Half
Floor 3 of 4
View Other
Pets Yes
Year Built 1881
Living Area 1,800 sq ft
Architectural Style WalkUp
Basement Other
Block/Lot 01098/0001

Description

Welcome home to this extremely special 3 bedroom 2.5-bath duplex in the coveted Ansonia Court. Historic charm mixed with modern amenities invite you into an urban-chic haven, a calm refuge from the city outside. This home feels more like a townhouse than a co-op with soaring rustic beamed ceilings, exposed industrial brick, and oversized arched windows that flood the home with natural light.

Step into a sprawling living area, an oasis with hardwood floors and towering ceilings. Walk right by the carefully hidden in-unit washer /dryer into an expansive and sun-filled open kitchen/dining room with oversized South-facing windows. Off of the kitchen on the first floor is a powder room with serene spa sensibilities. An endless walk-in closet is hidden under the wooden staircase for additional storage. Up the stairway awaits your dream primary bedroom, with extra large in-suite bathroom, tiled shower and hand-built cabinetry. Two more generous-sized bedrooms share another full bathroom with a vintage double wall-mount sink. Each room has been thoughtfully redesigned and updated for modern living and comfort. This unit comes with it's own roof rights.

Tucked away through the courtyard is the private entrance to building F. It is surrounded by a lush lawn, a fountain, benches and ideal landscaping that all provide a peaceful retreat and common area for all residents to use.

The Ansonia is a well-maintained pet-friendly building with a full-time super, package room, and bike and stroller storage. Located just two blocks from Prospect Park and just a few blocks to the 7th Ave F and G train. Neighborhood favorites include Winner bakery, Brook Vin, Cafe Azul, Fonda, Bacaccia, Pasta Louise, Union Market, and local retail shops like Sterling. Located in District 15.

The Ansonia Clock Factory, originally constructed in 1881 closed its doors in the late 1920's.The site was converted in 1982 into "Ansonia Court," a residential co-op, preserving its industrial architecture.




Features & Amenities

Interior Features

Building Other Washer Hookup In Unit

Exterior Features

Building Courtyard

Building Information

Building Ansonia Court
Total Units 70
Stories 4
Style WalkUp

Financial Details

Maintenance $2,370/mo

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

84

Median Asking Price

$1.74M

Median $/Sqft

$1,435

Avg Days on Market

N/A

New This Week

9

Price Reduced

12%

Sold (30 Days)

22

Median Sale Price

$1.67M

Live data from RLS at REBNY • Updated 3/24/26, 1:32 PM EST

Similar Listings in Park Slope

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Location

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420 12TH Street #F3L, Park Slope, Kings County

Floor Plans

Floor Plan
MLS® ID: RLS20079051
First Listed: 3/24/2026
On Market: 3/24/2026
Price Changed: 3/24/2026
Contract Date: 3/24/2026

Listing Courtesy of Corcoran Group - Louise Simon

Listing Contact: (917) 609-5494

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 3/24/2026 at 5:32 PM UTC

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