Milton Coste

Licensed Real Estate Associate Broker

(917) 416-7433

SOLD FOR $1,225,000

· Closed April 24, 2020

435A 9th Street #4
Closed For Sale Co-op

$1,225,000

435A 9th Street #4

Park Slope, Brooklyn

MLS® #RLS10622729

RLS at REBNY

Listing by The Corcoran Group

2

Bedrooms

1

Bath

N/A

Sq. Ft.

1920

Year Built

Quick Summary

Bedrooms 2
Bathrooms 1
Year Built 1920
Ownership Co-op
Maintenance $933/mo
Neighborhood Park Slope
Floor 4 of 4

Property Highlights

  • Exposure: North,South,West facing
  • Outdoor Space: Rooftop
  • Style: Prewar architecture

Property Details

Type Co-op
Ownership Stock Cooperative
Total Rooms 4
Baths 1 Full
Floor 4 of 4
Exposure North,South,West
Cooling Window Units
Pets Yes
Cross Street 9th Street & 7th Avenue
Year Built 1920
Architectural Style Prewar

Listing History

Event Date Price Change
Listed Dec 11, 2019 $1,200,000 -
Currently Apr 27, 2026 $1,225,000 +2.1%

Description

With breathtaking views of the city skyline and New York Harbor sunsets from its exclusive roof deck, this well designed two bedroom, one bath apartment is drenched in superb light. Perched on the top floor of an easy going and self-managed 4 unit cooperative, this home is exceptional in many ways--featuring magazine worthy finishes and unparalleled features, including triple exposures (north, south, and west), a marble mantled wood burning fireplace, original tin ceilings, mint high end appliances and fixtures in both kitchen and bathroom and a very well appointed layout, lending itself to a spacious, effortless flow. Additionally, there is a washer/dryer in the unit and additional storage in the lower level (including separate bike storage). This building is pet friendly, minutes to the subway, a block from Prospect Park and all things noteworthy on Park Slopes thriving 7th Avenue.

Features & Amenities

Interior Features

Building Washer Dryer Install Allowed Common Area

Exterior Features

Building Roof Deck Rooftop

Appliances

Dryer Washer

Building Information

Building Data View Compliance & Permits
Total Units 4
Stories 4
Style Prewar

Financial Details

Maintenance $933/mo
Original Price $1,200,000
Sale Price $1,225,000

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

110

Median Asking Price

$1.70M

Median $/Sqft

$1,376

Avg Days on Market

N/A

New This Week

15

Price Reduced

16%

Sold (30 Days)

20

Median Sale Price

$1.66M

Live data from RLS at REBNY • Updated 4/26/26, 8:00 PM EST

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Location

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435A 9th Street #4, Park Slope, Kings County • Near 9th Street & 7th Avenue

Floor Plans

Floor Plan

Building Information

Official NYC property records for this building

1889
Year Built
137 years old
4
Floors
R6A
Zoning District
Historic District: Park Slope Historic District Extension

Tax & Assessment

Assessed Value: $2,185,650
Land Value: $225,000
Exemptions: $0

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

Lot Area: 4,147 SF
Building Area: 20,036 SF
Built FAR: 4.83
Allowed FAR: 3

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 $933 per month. Confirm the exact amount with the listing broker before making an offer.

This property has 2 bedrooms and 1 full bathroom.

According to MLS records, the building was constructed in 1920, making it approximately 106 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: RLS10622729
First Listed: 12/11/2019
Closed: 4/24/2020
Contract Date: 1/10/2020

Listing Courtesy of The Corcoran Group - Lesley Semmelhack

Listing Contact: (917) 586-0621

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 4/27/2026 at 12:00 AM UTC

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