Under Contract – Backup offers may be accepted
420 12TH Street #F3L
MLS® #RLS20079051
Listing by Corcoran Group
3
Bedrooms
2.5
Baths
1,800
Sq. Ft.
1881
Year Built
Quick Summary
Property Highlights
- Views: Other
- Style: WalkUp architecture
- Character: Pre-war building (1881)
Property Details
Listing History
| Event | Date | Price | Change |
|---|---|---|---|
| Listed | Mar 24, 2026 | $2,495,000 | - |
| Currently | Jul 2, 2026 | $2,495,000 | - |
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 extra large 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 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. 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
Exterior Features
Building Information
Financial Details
About Park Slope
View All Park Slope ListingsPark 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 NeighborhoodActive Listings
108
Median Asking Price
$1.90M
Median $/Sqft
$1,437
Avg Days on Market
N/A
New This Week
1
Price Reduced
22%
Sold (30 Days)
41
Median Sale Price
$1.87M
Live data from RLS at REBNY • Updated 7/2/26, 3:06 AM EST
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Location
420 12TH Street #F3L, Park Slope, Kings County
Floor Plans
Building Information
Official NYC property records for this building
Tax & Assessment
Note: Individual unit taxes may differ. Verify current tax bills with NYC DOF.
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
Listing Data
RLS® at REBNY (Real Estate Board of New York) via Trestle API. Updated in real-time.
Building Data
NYC PLUTO (Primary Land Use Tax Lot Output), NYC Department of City Planning. Updated quarterly.
Market Data
RLS® at REBNY (Real Estate Board of New York). Live data updated in real-time.
Map & Location
OpenStreetMap contributors via Leaflet. Geocoding via Nominatim.
All data is provided for informational purposes only and should be independently verified. See our Data Sources Policy for more information.
Frequently Asked Questions
Common questions about this property
The current listed monthly maintenance are $2,370 per month. Confirm the exact amount with the listing broker before making an offer.
This property has 3 bedrooms and 2 full bathrooms and 1 half bathroom.
The listed interior living area is 1,800 square feet. Verify dimensions independently during due diligence.
According to MLS records, the building was constructed in 1881, making it approximately 145 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: DOG FRIENDLY AND NO WEIGHT LIMIT,Building Pets Allowed Comments:DOG FRIENDLY AND NO WEIGHT LIMIT. Contact the listing broker for weight limits or breed restrictions.
At the current list price of $2,495,000 for 1,800 sq ft, the asking price per square foot is approximately $1,386. This figure is for reference only and may differ from appraised or assessed values.
To schedule a private showing, contact Milton Coste at (917) 416-7433 or [email protected]. 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) 416-7433Listing 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 Data display by Keller Williams NYC. Data last updated on 7/2/2026 at 7:06 AM UTC