Milton Coste

Licensed Real Estate Associate Broker

(917) 416-7433

SOLD FOR $3,200,000

· Closed November 25, 2025

Closed For Sale Condo

$3,200,000

$1,417 per sq ft

15 W 20th Street #9A

Flatiron, Manhattan

MLS® #RLS20023247

RLS at REBNY

Listing by Compass

2

Bedrooms

3

Baths

2,259

Sq. Ft.

1906

Year Built

Quick Summary

Bedrooms 2
Bathrooms 3
Living Area 2,259 sq ft
Year Built 1906
Ownership Condo
HOA/Common Charges $2,476/mo
Property Taxes $42,684/yr
Neighborhood Flatiron
Floor 9 of 11

Property Highlights

  • Views: City Lights, City, Neighborhood
  • Climate Control: Central Air
  • Character: Pre-war building (1906)

Property Details

Type Condo
Ownership Condominium
Total Rooms 6
Baths 3 Full
Floor 9 of 11
View City Lights, City, Neighborhood
Heating Central, Forced Air
Cooling Central Air
Pets Yes
Year Built 1906
Living Area 2,259 sq ft
Structure Type MixedUse
Furnished Unfurnished
Parcel # 0822-1316
Block/Lot 00822/7504

Listing History

Event Date Price Change
Listed May 13, 2025 $3,450,000 -
Currently May 9, 2026 $3,200,000 -7.2%

Description

Renovated LOFT Condo in the heart of Flatiron. Experience luxury in the form of privacy in this rare Downtown LOFT. Living at 15 West 20th Street, 9A, you are perfectly positioned at the crossroads of Flatiron, Chelsea, and NoMad, within a meticulously well kept condo. The structure encompasses pre-war history with modern renovations, sophistication, and the architecture often present in Tribeca. Enter through your home through a private keyed elevator, the kitchen spills into a sun-filled great room with soaring ceilings, wide-plank hardwood floors, and oversized south-facing windows. The expansive dining/living room features a Heatglow gas fireplace and a built-in Sonos sound system, creating the perfect setting for both entertaining and everyday living. Southern facing light pours into the home through four tall windows. There is a versatile interior room that serves as a convertible third “anything” room, such as a studio, wine cellar, home office, library, or secondary den space. This third bonus room has central heating and cooling ducts and can be opened using transparent sliding glass doors if desired. The kitchen is fit for a chef, it’s a showstopper - with new renovation such as a white marble waterfall island, custom shaker cabinetry, top of the line appliances including a Miele gas range, wall oven, built-in coffee system, Sub-Zero refrigerator, wine cooler, Kraus fixtures and even a pot filler over the stove. Also important to note, the oven vents out, allowing for the smells of cooking to move out of your main living space. Two serene north facing bedrooms are each designed with luxury en-suite bathrooms, adorned with marble tile, Kohler fixtures, and Toto toilets. Because 9A is situated on a very top floor of the building, the bedrooms have views of the sky and better light than any other position in the building. The primary bedroom suite offers a five-piece bath with soaking tub, glass-enclosed shower, double vanity, and water closet. A third full bathroom with a standing shower, a discreet laundry room with Miele washer/dryer, and a two-zone central A/C system complete this thoughtfully designed home. Both bathroom vanities were refinished, and the primary bathroom stone was recently freshly polished and sealed. Built in 1906 and redeveloped by Extell Development, 15 West 20th Street — known as The Altair Condominium — is an exclusive boutique building with only 17 residences. The 11-story structure boasts a two-story rusticated limestone base, beige-brick exterior, and ornate limestone bandcourses above the second and sixth floors. A distinctive dentillated cornice crowns the building, enhancing its historic appeal. Amenities include a door person from 9:00am-5:00pm every day, fitness center, landscaped rooftop with a built in herb garden and BBQ, plus 9A specifically comes with a private storage unit. Located on a tranquil block in the Flatiron District, residents are moments from Madison Square Park, Eataly, ABC Kitchen, Union Square Greenmarket, and Fifth Avenue shopping. West 20th Street and 5th Avenue are main shopping corridors, once known as Ladies Mile Historic District. With multiple subway lines nearby, this is downtown NYC living at its finest — offering privacy, convenience, and timeless style. *** Note *** Real Estate taxes are being advertised as Fully Unabated RETS. If you purchase in your name as a primary residence, you are eligible for 17.5% abatement off the shown RETs; discuss with your attorney.

Features & Amenities

Interior Features

Breakfast Bar Double Vanity High Ceilings Soaking Tub Walk In Closets Common On Floor In Unit See Remarks

Exterior Features

Private Entrance Private Outdoor Space Over60 Sqft

Building Amenities

Elevators

Appliances

Dishwasher Gas Cooktop Gas Oven Stainless Steel Appliances Wine Cooler

Building Information

Building Data View Compliance & Permits
Total Units 17
Stories 11
Structure MixedUse

Financial Details

Common Charges $2,476/mo
RE Taxes $42,684/yr ($3,557/mo)
Original Price $3,450,000
Sale Price $3,200,000
Previous Price $3,450,000

The 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 Neighborhood

Active Listings

134

Median Asking Price

$2.25M

Median $/Sqft

$1,761

Avg Days on Market

N/A

New This Week

14

Price Reduced

31%

Sold (30 Days)

11

Median Sale Price

$2.16M

Live data from RLS at REBNY • Updated 5/9/26, 10:52 AM EST

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Location

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15 W 20th Street #9A, Flatiron, New York County

Virtual Tour

Floor Plans

Floor Plan 1

Building Information

Official NYC property records for this building

1949
Year Built
77 years old
3
Floors
60
Residential Units
R5
Zoning District
Walk-Up Apartments

Tax & Assessment

Assessed Value: $4,446,450
Land Value: $706,500
Exemptions: $4,446,450

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

Lot Area: 52,330 SF
Building Area: 45,117 SF
Built FAR: 0.86
Allowed FAR: 1.5

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 $2,476 per month. Confirm the exact amount with the listing broker before making an offer.

The current listed annual property tax is $42,684, or roughly $3,557 per month. Verify the current assessment with your attorney before closing.

This property has 2 bedrooms and 3 full bathrooms.

The listed interior living area is 2,259 square feet. Verify dimensions independently during due diligence.

According to MLS records, the building was constructed in 1906, making it approximately 120 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 $3,200,000 for 2,259 sq ft, the asking price per square foot is approximately $1,417. 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: RLS20023247
First Listed: 5/12/2025
On Market: 5/13/2025
Price Changed: 11/29/2025
Closed: 11/25/2025
Contract Date: 4/1/2025

Listing Courtesy of Compass - Teresa Marie Alessandro

Listing Contact: (914) 980-4262

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 5/9/2026 at 2:52 PM UTC

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