Milton Coste

Licensed Real Estate Associate Broker

(917) 416-7433
427 9th Street #2

For Sale · Listing by Corcoran Group

427 9th Street #2

Park Slope, Brooklyn

$799,000

Interested in this property?
Active For Sale Co-op

$799,000

427 9th Street #2

Park Slope, Brooklyn

MLS® #RLS20111085

RLS at REBNY

Listing by Corcoran Group

1
Bedroom
1
Bath
N/A
Sq. Ft.
1920
Year Built

Quick Summary

Bedrooms 1
Bathrooms 1
Lot Size 1,500 sq ft
Year Built 1920
Ownership Co-op
Property Taxes $12,339.36/yr
Neighborhood Park Slope
Floor 2 of 3

Property Highlights

  • Views: Garden
  • Exposure: South facing
  • Style: WalkUp architecture

Property Details

Type Co-op
Ownership Stock Cooperative
Total Rooms 3
Baths 1 Full
Floor 2 of 3
View Garden
Exposure South
Cooling Wall Units
Pets Yes
Year Built 1920
Architectural Style WalkUp
Structure Type Quadruplex
Flooring Hardwood
Furnished Unfurnished
Lot Size 1,500 sq ft
Parcel # 01006-0050-00427-000-0000002
Block/Lot 01006/0050

Listing History

Event Date Price Change
Listed Sep 9, 2026 $799,000 -
Currently Sep 10, 2026 $799,000 -

Description

A Parlor-Floor Jewel Box in the Heart of Park Slope! Welcome to 427 9th Street Apt 2. This stunning, sun-drenched one-bedroom co-op occupies the coveted parlor floor of an intimate four-unit brownstone in the heart of prime Park Slope. Soaring ceilings over 10 feet high and oversized south-facing windows create an impressive sense of scale and fill the home with beautiful natural light, while original architectural details bring warmth and unmistakable pre-war character throughout. Recently refreshed from top to bottom, the apartment strikes the perfect balance between classic brownstone charm and stylish modern living. Newly refinished hardwood floors, updated lighting, and stunning chandeliers bring elegance and sophistication to the space while highlighting its gracious proportions and original details. The renovated kitchen features quartz countertops, abundant custom cabinetry, and stainless steel appliances, including a dishwasher. A recently installed in-unit Bosch washer and dryer adds another level of convenience to this exceptional home. The bright and spacious bedroom features soaring windows, an en-suite bathroom recently refreshed with updated finishes, and an enormous closet with a customizable closet system already installed, providing exceptional storage and organization. Ornate crown molding and beautifully preserved original details can be found throughout, seamlessly complemented by the home's thoughtful contemporary updates. Additional storage conveniently located in the entryway provides the perfect place for luggage, seasonal items, and other belongings you want tucked neatly out of sight. Perfectly positioned between vibrant 5th and 7th Avenues and just two blocks from Prospect Park, 427 9th Street puts the very best of Park Slope at your doorstep. Park Slope's celebrated food scene spans award-winning farm-to-table bistros, destination-worthy fine dining, casual pizzerias, and globally inspired cuisine, from Italian and French to Mediterranean and beyond. There is truly something for every palate, every night of the week. Add to that an exceptional selection of cafés, boutiques, specialty shops, and neighborhood favorites along both avenues, and it's easy to see why this location is so coveted. Transportation is a breeze, with the F and G trains conveniently located right on the corner, making travel throughout Brooklyn and into Manhattan effortless. Gifts, pied-à-terres, and co-purchasing are considered on a case-by-case basis and subject to board approval. Pets are also welcome with board approval. Pre-war character, modern convenience, exceptional light, and a coveted parlor-floor setting come together in one truly special Park Slope home.

Features & Amenities

Interior Features

Chandelier High Ceilings Common On Floor Common Area In Unit Flooring: Hardwood

Appliances

Dishwasher Stainless Steel Appliances

Building Information

Building Data View Compliance & Permits
Total Units 4
Stories 3
Structure Quadruplex
Style WalkUp

Financial Details

RE Taxes $12,339.36/yr ($1,028/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

58

Median Asking Price

$1.81M

Median $/Sqft

$1,419

Avg Days on Market

N/A

New This Week

19

Price Reduced

16%

Sold (30 Days)

41

Median Sale Price

$1.70M

Live data from RLS at REBNY • Updated 9/9/26, 8:22 PM EST

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Location

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427 9th Street #2, Park Slope, Kings County

Building Information

Official NYC property records for this building

1920
Year Built
106 years old
3
Floors
4
Residential Units
R6B
Zoning District
Walk-Up Apartments

Tax & Assessment

Assessed Value: $855,450
Land Value: $118,350
Exemptions: $0

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

Lot Area: 1,500 SF
Building Area: 2,314 SF
Built FAR: 1.54
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 $0 per month. Confirm the exact amount with Milton Coste before making an offer.

The current listed annual property tax is $12,339.36, or roughly $1,028 per month. Verify the current assessment with your attorney before closing.

This property has 1 bedroom 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.

Pet policy requires confirmation with Milton Coste. Additional notes: Based on Board Approval

To schedule a private showing, contact Milton Coste at (917) 416-7433 or milton@miltoncoste.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: RLS20111085
First Listed: 8/26/2026
On Market: 9/9/2026
Contract Date: 7/16/2026

Listing Courtesy of Corcoran Group - Laura Hess

Listing Contact: (808) 554-5083

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 9/10/2026 at 12:22 AM UTC

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Park Slope Market Update

41 sales last 30 days · $1.81M median · 1.4 months supply

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Quick Facts

Status Active Type Co-op Neighborhood Park Slope Borough Brooklyn
County Kings
Floor 2 of 3
Year Built 1920
First Listed 8/26/2026
Style WalkUp
Annual Tax $12,339.36

Monthly Costs Estimate

Down Payment 20%

$159,800

Interest Rate Loading...

Source: Freddie Mac PMMS

Loan Term 30 years

Est. Monthly Payment

$0

Principal & Interest $0
PMI (under 20% down) $0
Est. Taxes $1,028
Total Monthly $0

Estimates only. Consult a lender for exact figures.

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