Milton Coste

Licensed Real Estate Associate Broker

(917) 416-7433
340 6TH Avenue #1

For Sale · Listing by Douglas Elliman Real Estate

340 6TH Avenue #1

Park Slope, Brooklyn

$2,595,000

Interested in this property?
Active For Sale • Condo

$2,595,000

$1,444 per sq ft

340 6TH Avenue #1

Park Slope, Brooklyn

MLS® #RLS20124148

RLS at REBNY

Listing by Douglas Elliman Real Estate

Open Houses Scheduled

Sunday, November 8 • 12:00 PM – 2:00 PM

Sunday, November 8 • 12:00 PM – 2:00 PM

REBNY 2025: signed Buyer Representation Agreement required before any showing.

2
Bedrooms
2.5
Baths
1,797
Sq. Ft.
1920
Year Built

Quick Summary

Bedrooms 2
Bathrooms 3 full, 1 half
Living Area 1,797 sq ft
Year Built 1920
Ownership Condo
HOA/Common Charges $476/mo
Property Taxes Contact for details
Neighborhood Park Slope
Floor 1 of 4

Property Highlights

  • Exposure: East,West facing
  • Style: WalkUp architecture
  • Character: Pre-war building (1920)

Property Details

Type Condo
Ownership Condominium
Total Rooms 5
Baths 2 Full, 1 Half
Floor 1 of 4
Exposure East,West
Pets Yes
Year Built 1920
Living Area 1,797 sq ft
Architectural Style WalkUp
Basement Other
Block/Lot 00985/1401

Listing History

Event Date Price Change
Listed Nov 4, 2026 $2,595,000 -
Currently Nov 4, 2026 $2,595,000 -

Recent Sales in This Building

What other apartments here closed for in the last three years, as reported to the REBNY Listing Service (RLS).

Closed Unit Beds Sold For Per Sq Ft
Jun 18, 2026 Unit 1C 3 BR $2,120,300 -
Jun 8, 2026 Unit 11C 2 BR $1,690,000 $1,252
Jan 31, 2024 Unit 2C 3 BR $1,895,000 $1,404
See every sale in this building

Description

Welcome to 340 Sixth Avenue, where contemporary design meets classic Brooklyn charm in the heart of Park Slope. This beautifully finished residence offers exceptional indoor and outdoor living, thoughtfully designed interiors, and the flexibility to accommodate any lifestyle. With ceilings at 9.5 feet, oversized windows, and wide-plank 8-inch engineered white oak flooring, the home feels bright, open, and inviting. The expansive living and dining space is anchored by a charming bay window, while the adjoining kitchen combines sleek design with everyday functionality. Custom Shinnoki oak cabinetry is complemented by Carrara marble countertops, Franke fixtures, an Insinkerator garbage disposal, and a premium Thermador appliance package, including a 30-inch refrigerator, electric oven with vented range hood, and dishwasher. The primary suite offers a peaceful escape with lovely views of the private backyard, a custom walk-in closet, and a beautifully appointed en-suite bathroom. Spa-inspired finishes include Cle Tile, a Caesarstone vanity, Toto fixtures, and a spacious walk-in shower clad in Carrara marble. The generously proportioned second bedroom features ample closet space and convenient access to a full bathroom complete with a tub and shower combination and striking terrazzo flooring. What truly sets this home apart is its incredible lower level and private outdoor space. An additional 777 square feet of recreation space offers endless possibilities, whether you envision a media lounge, home gym, playroom, office, or a combination of uses. Just beyond, glass doors lead to a private 491-square-foot private backyard, creating a seamless extension of the living space and an ideal setting for outdoor dining, entertaining, or simply unwinding. Additional conveniences include a powder room, dedicated laundry room with a GE washer and dryer, high-efficiency split-system heating and cooling and a substantial storage room. Originally built in the 1920s, 340 Sixth Avenue retains the timeless character of its brick facade, brownstone accents, and distinctive cornice. Modern conveniences include a ButterflyMX smart video intercom system for effortless guest and delivery access. Located on one of Park Slope's picturesque, tree-lined blocks, the home places some of Brooklyn's most beloved destinations right outside your door. The boutiques, cafes, restaurants, and neighborhood favorites along Fifth and Seventh Avenues are just moments away. Washington Park, with its farmers' market, playground and historic Old Stone House, is only a block away. Prospect Park, the Brooklyn Museum, Brooklyn Botanic Garden, and Brooklyn Public Library are also within easy reach. With convenient access to the F, G, R, Q, 2, and 3 subway lines, multiple bus routes, getting around the city couldn't be easier. A rare opportunity to enjoy the space and privacy of townhouse-style living with the finishes and conveniences of a modern Brooklyn residence, all in one of the borough's most desirable neighborhoods.

Features & Amenities

Interior Features

High Ceilings Building None In Unit

Exterior Features

Garden Private Outdoor Space Over60 Sqft

Appliances

Dishwasher

Building Information

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

Financial Details

Common Charges $476/mo
RE Taxes Contact for details

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

103

Median Asking Price

$1.79M

Median $/Sqft

$1,402

Avg Days on Market

N/A

New This Week

10

Price Reduced

18%

Sold (30 Days)

26

Median Sale Price

$1.70M

Live data from RLS at REBNY • Updated 11/4/26, 2:43 PM EST

Similar Listings in Park Slope

View All

Location

Loading map...

340 6TH Avenue #1, Park Slope, Kings County

Floor Plans

Floor Plan 1

Building Information

Official NYC property records for this building

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

Tax & Assessment

Assessed Value: $1,276,651
Land Value: $209,251
Exemptions: $0

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

Lot Area: 1,587 SF
Building Area: 4,097 SF
Built FAR: 2.58
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 $476 per month. Confirm the exact amount with Milton Coste before making an offer.

This property has 2 bedrooms and 2 full bathrooms and 1 half bathroom.

The listed interior living area is 1,797 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 Milton Coste.

At the current list price of $2,595,000 for 1,797 sq ft, the asking price per square foot is approximately $1,444. 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) 416-7433
MLS® ID: RLS20124148
First Listed: 11/4/2026
On Market: 11/4/2026
Price Changed: 11/4/2026
Contract Date: 11/4/2026

Listing Courtesy of Douglas Elliman Real Estate - DANA P GOLDMAN

Listing Contact: (516) 521-1328

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.

How working with a buyer's agent works: I work for you, not the seller. Before I show you anything, New York brokerage rules ask us to put that in writing: an agreement and a disclosure that say I work for you and negotiate on your behalf. The agreement is non-exclusive: you can work with other agents, it runs for a short fixed term we agree on, and you can end it with a note. You may attend open houses independently without an agreement. Read how it works

RLS at REBNY

RLS Data display by Keller Williams NYC. Data last updated on 11/4/2026 at 7:43 PM UTC

See it in person

Milton Coste - NYC Real Estate Broker

Milton Coste

Licensed Real Estate Associate Broker

Keller Williams NYC

View Bio →

Sale history, taxes, violations and comps for this unit

(917) 416-7433 WhatsApp Email Milton
Hablo Español

Park Slope Market Update

26 sales last 30 days · $1.79M median · 4 months supply

Read Full Report

New listings in this neighborhood

Quick Facts

Status Active Type Condo Neighborhood Park Slope Borough Brooklyn
County Kings
Floor 1 of 4
Year Built 1920
First Listed 11/4/2026
Style WalkUp
Living Area 1,797 sqft
Common Charges $476/mo

Monthly Costs Estimate

Down Payment 20%

$519,000

Interest Rate Loading...

Source: Freddie Mac PMMS

Loan Term 30 years

Est. Monthly Payment

$0

Principal & Interest $0
PMI (under 20% down) $0
Common Charges $476
Total Monthly $0

Estimates only. Consult a lender for exact figures.

Mansion tax applies at this price point

New York State charges the buyer a mansion tax on residential purchases at $1,000,000 or more. At this asking price the tier is $2M to $2,999,999 at 1.25%, applied to the whole purchase price. It is due in cash at closing and cannot be financed.

Estimated mansion tax at asking

$32,438

Run the numbers on a different offer price

Estimate based on the asking price. Confirm your own obligation with your real estate attorney.

Back to Search

Find more properties

Buying a Condo? Start Here

Co-op vs. Condo: Which Is Right for You?

Ownership structure, board approval, financing: the full comparison.

Read article

Condo Due Diligence Checklist

What to review before signing: financials, reserve fund, offering plan.

Read article

How to Read a Condo Offering Plan

Decode the offering plan before you commit to any new development.

Read article

NYC Mansion Tax: 2026 Guide

How the tiered mansion tax works for purchases over $1M.

Read article

Interested in this property?

Are you already working with an agent? (optional)

Your info is secure and never shared.

You're contacting Milton Coste, a buyer's agent. Before any private showing, New York brokerage rules require a short non-exclusive agreement. Milton walks you through it before you sign anything. Broker commissions are not set by law and are fully negotiable. How working together works.

Call Text Email