For Sale · Listing by Douglas Elliman Real Estate
340 6TH Avenue #1
Park Slope, Brooklyn
$2,595,000
340 6TH Avenue #1
MLS® #RLS20124148
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
Property Highlights
- Exposure: East,West facing
- Style: WalkUp architecture
- Character: Pre-war building (1920)
Property Details
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 |
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
Exterior Features
Appliances
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
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
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Location
340 6TH Avenue #1, 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 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) 416-7433Listing 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 Data display by Keller Williams NYC. Data last updated on 11/4/2026 at 7:43 PM UTC
See it in person
Sale history, taxes, violations and comps for this unit
Before you bid
Pre-Offer Report: 340 6TH Avenue #1
At $2,595,000, the listing leaves out what decides the offer: the recorded sale history, the tax and abatement picture, open building violations and permits, and the closed sales that set the price. Milton prepares the report from public records. No obligation.
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What happens next
- 1Milton emails you today.
- 2A short call about what you want and when.
- 3The agreement arrives electronically after the call. Then showings.
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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.
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Quick Facts
Monthly Costs Estimate
$519,000
Source: Freddie Mac PMMS
Est. Monthly Payment
$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
Estimate based on the asking price. Confirm your own obligation with your real estate attorney.
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