SOLD FOR $5,193,000
· Closed April 26, 2022
43 W 21ST Street #PH
MLS® #RLS10783614
Listing by Serhant
3
Bedrooms
3
Baths
2,691
Sq. Ft.
1910
Year Built
Quick Summary
Property Highlights
- Exposure: North,South facing
- Outdoor Space: Building Terrace, Terrace
- Fireplace: Wood-burning or decorative fireplace
Property Details
Listing History
| Event | Date | Price | Change |
|---|---|---|---|
| Listed | Dec 14, 2021 | $5,500,000 | - |
| Currently | May 18, 2026 | $5,193,000 | -5.6% |
Description
Stunning Duplex Penthouse with 2 Terraces & A Wood-Burning Fireplace! Welcome to this massive, pristinely renovated duplex condo in the heart of Flatiron! A wonderful 3-bedroom, 3-bathroom penthouse with approximately 2,691 square feet of magnificent interiors, plus approximately 1,400 square feet of outdoor space throughout two amazing private terraces. Ideal for modern lifestyles, the home features a grand living/dining room, huge chef's kitchen, home office/den, and a home gym. A massive skylight allows abundant sunlight to be received from the home's south and north exposures. Two HUGE private terraces are ideal for sun lounging, alfresco dining, and urban gardening. Finishing comforts include a charming wood-burning fireplace, white-washed exposed brick, oversized sash windows, gorgeous hardwood floors, key-locked elevator with direct access, central A/C and heat, Lutron lighting, and an in-home laundry room with a washer/dryer. The lower level of the home begins with an open-concept living room, dining room, and kitchen brimming with abundant natural light from the massive skylight and large windows. The living room boasts grand proportions and a beautiful fireplace, while the kitchen is equipped with a huge island, Carrara marble countertops, subway tile backsplash, custom black-and-white cabinets, and a suite of high-end stainless steel appliances from Viking and Sub-Zero. Just past the kitchen is a quiet den, also suitable for a private home office. Two bedrooms, two bathrooms, and a convenient laundry room complete this wonderful level. Both bedrooms have large reach-in closets, and both full bathrooms have stylish fixtures. A curving skylit staircase flows up to a second level with the primary bedroom and a sunny home gym/library, plus two large terraces. The primary suite opens out onto a north-facing terrace with lush planters and privacy fencing. It also features a walk-in closet and a full en-suite bathroom with a walk-in shower. The home gym/library leads out onto a planted south-facing terrace with classic Flatiron views. 43 West 21st Street is a boutique condominium located in the Flatiron District. The building is moments from a multitude of restaurants, bars, cafes, and shops, and is close to Eataly, Madison Square Park, NoMad, and Chelsea. Nearby subway lines include the 1/F/M/N/R/W. The taxes shown reflect a primary residence abatement.
Features & Amenities
Interior Features
Exterior Features
Appliances
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
137
Median Asking Price
$2.42M
Median $/Sqft
$1,788
Avg Days on Market
N/A
New This Week
10
Price Reduced
32%
Sold (30 Days)
3
Median Sale Price
$1.40M
Live data from RLS at REBNY • Updated 5/18/26, 9:41 AM EST
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Location
43 W 21ST Street #PH, Flatiron, New York 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 $1,710 per month. Confirm the exact amount with the listing broker before making an offer.
The current listed annual property tax is $64,812, or roughly $5,401 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 2,691 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 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 $5,193,000 for 2,691 sq ft, the asking price per square foot is approximately $1,930. 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 Serhant - Nicole Palermo
Listing Contact: (917) 226-2704
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 Data display by Keller Williams NYC. Data last updated on 5/18/2026 at 1:41 PM UTC