Milton Coste

Licensed Real Estate Associate Broker

(917) 416-7433

SOLD FOR $1,576,000

· Closed August 19, 2015

420 12TH Street #D3L
Closed For Sale Co-op

$1,576,000

420 12TH Street #D3L

Park Slope, Brooklyn

The Ansonia Court

MLS® #RLS10090906

RLS at REBNY

Listing by The Corcoran Group

2

Bedrooms

2

Baths

N/A

Sq. Ft.

1899

Year Built

Quick Summary

Bedrooms 2
Bathrooms 2
Year Built 1899
Ownership Co-op
Maintenance $1,185/mo
Neighborhood Park Slope
Floor 3 of 4

Property Highlights

  • Exposure: West facing
  • Style: Prewar architecture
  • Climate Control: Wall Units

Property Details

Type Co-op
Ownership Stock Cooperative
Total Rooms 4
Baths 2 Full
Floor 3 of 4
Exposure West
Cooling Wall Units
Pets Yes
Cross Street 12th Street & Seventh Avenue
Year Built 1899
Architectural Style Prewar
Parcel # 01098-0001-00420-000-0000D3L

Listing History

Event Date Price Change
Listed May 10, 2015 $1,575,000 -
Currently May 1, 2026 $1,576,000 +0.1%

Description

ITS NO WONDER THE ANSONIA IS MOST COVETED LOFT BUILDING IN PARK SLOPE~ This spacious 3rd floor DUPLEX two-bedroom apartment is in the fantastic Ansonia Court a 19th Century conversion on 12th Street near bustling 7th Avenue. The light-filled apartment features a full size washer/dryer, two oversized size bedrooms, 2 full renovated bathrooms, lovely original exposed brick, wooden ceilings, a GORGEOUS renovated kitchen complete with chef's appliances and lovely treetop views. There is the potential to create a third bedroom (alternate floor-plan is posted for your review). The building has amazing features like a gorgeous tree-filled interior courtyard and is two blocks to Prospect Park and less than a 5-minute walk to the 7th Ave F train subway line. Neighborhood treats include UNION MARKET, TALDE, THISTLE HILL TAVERN, LADY BIRD BAKERY, FONDA...you may just never leave.

Features & Amenities

Interior Features

Separate Formal Dining Room Eat In Kitchen Building Washer Dryer Install Allowed Common Area

Exterior Features

Building Courtyard Building Garden

Building Information

Financial Details

Maintenance $1,185/mo
Original Price $1,575,000
Sale Price $1,576,000
Previous Price $1,575,000

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

112

Median Asking Price

$1.72M

Median $/Sqft

$1,376

Avg Days on Market

N/A

New This Week

11

Price Reduced

17%

Sold (30 Days)

23

Median Sale Price

$1.64M

Live data from RLS at REBNY • Updated 5/1/26, 3:29 AM EST

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Location

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420 12TH Street #D3L, Park Slope, Kings County • Near 12th Street & Seventh Avenue

Floor Plans

Floor Plan 1
Floor Plan 2

Building Information

Official NYC property records for this building

1881
Year Built
145 years old
4
Floors
70
Residential Units
R6B
Zoning District
Walk-Up Apartments Historic District: Park Slope Historic District Extension

Tax & Assessment

Assessed Value: $7,875,900
Land Value: $958,500
Exemptions: $36,640

Note: Individual unit taxes may differ. Verify current tax bills with NYC DOF.

Lot Area: 40,800 SF
Building Area: 109,380 SF
Built FAR: 2.68
Allowed FAR: 2

Source: NYC PLUTO (Primary Land Use Tax Lot Output), NYC Department of City Planning (data.cityofnewyork.us)

Want help estimating ownership costs or understanding building compliance? Let's discuss

Frequently Asked Questions

Common questions about this property

The current listed monthly maintenance are $1,185 per month. Confirm the exact amount with the listing broker before making an offer.

This property has 2 bedrooms and 2 full bathrooms.

According to MLS records, the building was constructed in 1899, making it approximately 127 years old.

This listing is a co-op (stock cooperative). Buyers purchase shares in a corporation rather than real property, and the board must approve all sales.

Pets are permitted at this property. Contact the listing broker for weight limits or breed restrictions.

To schedule a private showing, contact Milton Coste at (917) 416-7433 or mcoste@kwnyc.com. Per REBNY guidelines effective 2025, a Buyer Representation Agreement is required before a buyer's broker can show you properties. You may attend open houses independently without one.

Have a question not answered here?

(917) 416-7433
MLS® ID: RLS10090906
First Listed: 5/10/2015
Price Changed: 6/17/2015
Closed: 8/19/2015
Contract Date: 5/10/2015

Listing Courtesy of The Corcoran Group - Jessica Buchman

Listing Contact: (917) 579-8641

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 5/1/2026 at 7:29 AM UTC

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