SOLD FOR $1,135,000
· Closed July 14, 2013
420 12TH Street #H3L
MLS® #RLS10089235
Listing by Brown Harris Stevens Residential Sales LLC
2
Bedrooms
2
Baths
N/A
Sq. Ft.
1881
Year Built
Quick Summary
Property Highlights
- Style: Prewar architecture
- Character: Pre-war building (1881)
Property Details
Listing History
| Event | Date | Price | Change |
|---|---|---|---|
| Listed | May 12, 2013 | $1,075,000 | - |
| Price Reduced | Jul 23, 2013 | $1,137,000 | +5.8% |
| Currently | May 5, 2026 | $1,135,000 | -0.2% |
Description
The Ansonia Clock Factory was built in 1881 and converted to a 70 unit co-op in 1982. Today, the historic brick building surrounds a beaufitully landscaped inner courtyard complete with trees and benches and water fountain. This duplex unit has oversized windows, exposed brick walls and soaring wood beamed ceilings.The living room is open and light filled and boasts a balcony that overlooks the tranquil courtyard. The spacious, sun-drenched dining room has tree top views and a pass thru to a newly renovated cook's kitchen with maple cabinets, granite countertops, stainless steel appliances, deep kitchen sink and ceramic tiled backsplash. A convenience powder room completes the lower level. Upstairs are two extra large bedrooms with vaulted wood beamed ceilings and totally renovated spa-like white tiled bathroom with blue trim. The upper level also features plenty of storage space and your own washer and dryer, hot water heater and gas furnace. Pet friendly, near subway transportation, shopping and dining, two blocks to Prospect Park. A must see!
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
114
Median Asking Price
$1.67M
Median $/Sqft
$1,384
Avg Days on Market
N/A
New This Week
17
Price Reduced
15%
Sold (30 Days)
24
Median Sale Price
$1.58M
Live data from RLS at REBNY • Updated 5/5/26, 2:21 AM EST
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Location
420 12TH Street #H3L, 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 $1,059 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 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. 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) 416-7433Listing Courtesy of Brown Harris Stevens Residential Sales LLC - Phyllis NORTON-TOWERS
Listing Contact: (347) 451-3003
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 5/5/2026 at 6:21 AM UTC