Milton Coste

Licensed Real Estate Associate Broker

(917) 416-7433

SOLD FOR $2,850,000

· Closed January 4, 2022

343 6th Avenue #1-A
Closed For Sale Condo

$2,850,000

$1,400 per sq ft

343 6th Avenue #1-A

Park Slope, Brooklyn

MLS® #RLS10745890

RLS at REBNY

Listing by Compass

3

Bedrooms

3

Baths

2,035

Sq. Ft.

1920

Year Built

Quick Summary

Bedrooms 3
Bathrooms 3
Living Area 2,035 sq ft
Year Built 1920
Ownership Condo
HOA/Common Charges $809/mo
Property Taxes $6,636/yr
Neighborhood Park Slope
Floor 1 of 4

Property Highlights

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

Property Details

Type Condo
Ownership Condominium
Total Rooms 7
Baths 3 Full
Floor 1 of 4
Exposure North,West
Cooling Central Air
Pets Yes
Cross Street 3rd Street/4th Street
Year Built 1920
Living Area 2,035 sq ft
Architectural Style Prewar
Block/Lot 983/1

Listing History

Event Date Price Change
Listed Oct 11, 2021 $2,850,000 -
Currently Apr 22, 2026 $2,850,000 -

Description

Park Slope splendor awaits in this three-bedroom plus office, three-bathroom duplex featuring contemporary European styling, gorgeous natural light and private outdoor space on the prime corner of 6th Avenue and 4th Street. The beauty of Brownstone Brooklyn becomes your daily backdrop in this stunning 2,035-square-foot home, where extra-tall tilt-and-turn wood windows line the northern and western exposures. A gracious foyer flanked by a full guest bath and coat closet invites you into the spectacular great room featuring gorgeous rift and quartered white oak herringbone floors and sky-high ceilings dotted with recessed lighting. Enjoy an expansive, sun-splashed setting for lavish seating and dining areas, or test your culinary skill in the elegant open kitchen. Here, custom wood cabinetry by local artisans joins sleek white countertops, a waterfall island and open shelving. The convenient appliance garage maintains the minimalist aesthetic alongside premium appliances, including a vented Wolf gas cooktop and wall oven, plus an integrated refrigerator and dishwasher. Off the great room, French doors reveal the large den, the perfect work-from-home space. Head downstairs to discover the breathtaking owner's retreat that opens to the delightful brick patio a wonderful destination for al fresco dining and entertaining. Inside, two closets, plus a walk-in, attend to wardrobe needs, and the en suite spa bathroom impresses with a spectacular wet room shower and soaking tub and floating double vanity with sculptural vessel sinks. Snow white stone tile and radiant heat floors complete the soothing space. Two secondary bedrooms offer large closets and easy access to a third magnificent full bathroom. Additional closet space, an in-unit Electrolux washer and vented dryer, and zoned central HVAC with discreet linear vents complete this outstanding Park Slope sanctuary. 343 6th Avenue is a stunning 1920 brick building converted to five luxury condominiums in 2017. Residents of the pet-friendly, boutique elevator building enjoy a common roof deck with glorious views that stretch all the way to the Manhattan skyline. Located on a tree-lined Park Slope block, this home is surrounded by great dining, nightlife and shopping along 5th and 7th avenues. One block west, Washington Park offers a playground, dog park, skatepark, a farmers' market and The Old Stone House. Three blocks east, sprawling Prospect Park features endless trails, open space, events and access to the Brooklyn Museum, Botanic Garden and Library. Transportation is effortless with F, G, R/Q and 2/3 trains, excellent bus service, and CitiBikes nearby.

Features & Amenities

Interior Features

Dining Area Entrance Foyer

Exterior Features

Building Roof Deck Patio

Appliances

Dryer Washer

Building Information

Stories 4
Style Prewar

Financial Details

Common Charges $809/mo
RE Taxes $6,636/yr ($553/mo)
Sale Price $2,850,000

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

109

Median Asking Price

$1.71M

Median $/Sqft

$1,391

Avg Days on Market

N/A

New This Week

12

Price Reduced

17%

Sold (30 Days)

22

Median Sale Price

$1.65M

Live data from RLS at REBNY • Updated 4/22/26, 4:52 AM EST

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Location

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343 6th Avenue #1-A, Park Slope, Kings County • Near 3rd Street/4th Street

Building Information

Official NYC property records for this building

1920
Year Built
106 years old
4
Floors
5
Residential Units
R6B
Zoning District
Condominiums

Tax & Assessment

Assessed Value: $707,400
Land Value: $26,551
Exemptions: $109,540

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

Lot Area: 2,708 SF
Building Area: 10,233 SF
Built FAR: 3.78
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 common charges are $809 per month. Confirm the exact amount with the listing broker before making an offer.

The current listed annual property tax is $6,636, or roughly $553 per month. Verify the current assessment with your attorney before closing.

This property has 3 bedrooms and 3 full bathrooms.

The listed interior living area is 2,035 square feet. Verify dimensions independently during due diligence.

According to MLS records, the building was constructed in 1920, making it approximately 106 years old.

This listing is a condominium. Buyers receive a deed to their individual unit and own their space outright, subject to condo association rules.

Pet policy requires confirmation with the listing broker.

At the current list price of $2,850,000 for 2,035 sq ft, the asking price per square foot is approximately $1,400. 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 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: RLS10745890
First Listed: 10/11/2021
Price Changed: 10/11/2021
Closed: 1/4/2022
Contract Date: 10/8/2021

Listing Courtesy of Compass - Jessica Hirsch

Listing Contact: (917) 324-0320

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 4/22/2026 at 8:52 AM UTC

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