For Sale · Listing by Compass
6 W 20th Street #7
Flatiron, Manhattan
$4,850,000
6 W 20th Street #7
MLS® #RLS20120388
Listing by Compass
- 3
- Bedrooms
- 2
- Baths
- 4,100
- Sq. Ft.
- 1910
- Year Built
Quick Summary
Property Highlights
- Exposure: North,South facing
- Style: Loft architecture
- Character: Pre-war building (1910)
Property Details
Listing History
| Event | Date | Price | Change |
|---|---|---|---|
| Listed | Oct 11, 2026 | $4,850,000 | - |
| Currently | Oct 11, 2026 | $4,850,000 | - |
Description
Spanning approximately 4,100 square feet, the entire seventh floor at 6 West 20th Street presents a rare opportunity to acquire an expansive, authentic live/work loft at an exceptional value. Dramatic 12.5-foot ceilings, generous proportions, and an abundance of original architectural detail establish an extraordinary foundation. Original beamed ceilings, exposed brick, and oversized steel-casement windows lend the space an unmistakable industrial character, while open northern and southern exposures invite beautiful natural light in throughout the day. The result is a light-filled, authentic loft with a remarkable sense of scale and architectural integrity—qualities increasingly difficult to find in Manhattan. Situated within the Ladies’ Mile Historic District, the distinguished building offers a connection to a storied chapter of New York’s architectural and commercial history, when the surrounding streets formed one of Manhattan’s most celebrated retail corridors. Today, the neighborhood seamlessly blends its historic character with a vibrant contemporary energy, defined by acclaimed restaurants, independent boutiques, destination shopping, and cultural attractions. Moments from Fifth Avenue’s premier shopping, Madison Square Park, and the celebrated dining destinations of Flatiron and NoMad, the property is also ideally positioned near the Union Square Greenmarket, where some of the city’s finest local farmers and purveyors gather throughout the week. A short distance away, West Chelsea’s renowned gallery district offers access to some of the world’s leading contemporary art galleries, making this an especially compelling location for collectors, artists, and those drawn to New York’s creative pulse. The result is an exceptional downtown setting that combines architectural heritage, cultural sophistication, and everyday convenience. Known more intimately as The Greenwich Building, 6 West 20th Street is a boutique, 11-story cooperative comprising just nine residences, designed and built in 1910 by esteemed architects Schwartz & Gross. The building has recently completed a series of capital improvements and infrastructure upgrades, including new passenger and freight elevators, updated electrical and plumbing systems, and a new Butterfly virtual doorman system, with a new roof nearing completion. The cooperative permits ownership through LLCs and trusts, pied-à-terre use, subletting, and pets. A full-time superintendent is on site Monday through Friday, providing attentive care for the building, while private access to an extra-wide freight elevator on every floor makes deliveries, art installations, and the movement of oversized furniture and materials exceptionally convenient.
Features & Amenities
Interior Features
Building Amenities
Building Information
Financial Details
About Flatiron
View All Flatiron ListingsThe Flatiron District is a busy intersection of history, technology, and luxury living. Named after the iconic Flatiron Building, the neighborhood is centered around Madison Square Park and is a hub for the city's 'Silicon Alley.' The real estate market is famous for its grand cast-iron loft buildings with high ceilings and expansive floor plans, alongside ultra-luxury glass towers that offer modern amenities and central Manhattan convenience.
Flatiron Live Market Data
View NeighborhoodActive Listings
121
Median Asking Price
$2.85M
Median $/Sqft
$1,941
Avg Days on Market
N/A
New This Week
10
Price Reduced
23%
Sold (30 Days)
14
Median Sale Price
$1.95M
Live data from RLS at REBNY • Updated 10/11/26, 7:43 PM EST
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Location
6 W 20th Street #7, Flatiron, New York County
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)
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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 monthly maintenance are $8,656 per month. Confirm the exact amount with Milton Coste before making an offer.
The current listed annual property tax is $0, or roughly $0 per month. Verify the current assessment with your attorney before closing.
This property has 3 bedrooms and 2 full bathrooms.
The listed interior living area is 4,100 square feet. Verify dimensions independently during due diligence.
According to MLS records, the building was constructed in 1910, making it approximately 116 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 Milton Coste for weight limits or breed restrictions.
At the current list price of $4,850,000 for 4,100 sq ft, the asking price per square foot is approximately $1,183. 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 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) 416-7433Listing Courtesy of Compass - Iv Frank Suriano
Listing Contact: (561) 358-6204
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 10/11/2026 at 11:43 PM UTC
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Sale history, taxes, violations and comps for this unit
Before you bid
Pre-Offer Report: 6 W 20th Street #7
At $4,850,000, 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
$970,000
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 $3M to $4,999,999 at 1.50%, applied to the whole purchase price. It is due in cash at closing and cannot be financed.
Estimated mansion tax at asking
$72,750
Estimate based on the asking price. Confirm your own obligation with your real estate attorney.
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