Milton Coste

Licensed Real Estate Associate Broker

(917) 416-7433
39 W 23rd Street #21A
Interested in this property?
Active For Sale Condo

$10,150,000

$3,178 per sq ft

39 W 23rd Street #21A

Flatiron, Manhattan

Flatiron House

MLS® #RLS20090493

RLS at REBNY

Listing by Compass

4

Bedrooms

4

Baths

3,194

Sq. Ft.

2021

Year Built

Quick Summary

Bedrooms 4
Bathrooms 4
Living Area 3,194 sq ft
Year Built 2021
Ownership Condo
HOA/Common Charges $5,944/mo
Property Taxes $82,140/yr
Parking Garage
Neighborhood Flatiron
Floor 21 of 22

Property Highlights

  • Parking: Private garage

Property Details

Type Condo
Ownership Condominium
Total Rooms 8
Baths 4 Full
Floor 21 of 22
Pets Yes, CatsOk, DogsOk
Year Built 2021
Living Area 3,194 sq ft
Parking Garage Available
Parking Features Garage
Structure Type HighRise
Flooring Hardwood
Furnished Unfurnished
Parcel # 0825-1137
Block/Lot 00825/1137

Listing History

Event Date Price Change
Listed May 12, 2026 $10,150,000 -
Currently May 12, 2026 $10,150,000 -

Description

This full-floor 4 bedroom residence spans 3,194 square feet and embodies the refined, nature-inspired design of COOKFOX Architects. Offered as a resale, it presents a unique opportunity to acquire one of the building’s most sought-after layouts, complete with 222 square feet of planted, irrigated outdoor loggias. A private elevator opens directly into a gracious entry gallery, leading to a dramatic corner living and dining room framed by floor-to-ceiling windows with sweeping 360-degree views. The corner kitchen, surrounded by four oversized windows, is beautifully appointed with custom oak, lacquer, and ribbed glass cabinetry with brass detailing, Calacatta Lincoln marble counters and backsplashes, a large island, and a pantry, alongside a suite of premium appliances. The residence features four well-proportioned bedrooms and four luxurious bathrooms, including a serene corner primary suite positioned along the east and north exposures. This private retreat is complete with a large walk-in closet, windowed dressing room, and a five-fixture spa bath outfitted with a custom vanity, heated marble floors, a six-foot Kohler soaking tub, glass-enclosed shower, and separate water closet. Additional bedrooms and bathrooms are equally refined with Watermark oil-rubbed bronze fittings and elevated finishes throughout. Additional in-unit features include custom automated shades, bespoke millwork and built-ins, central heating and cooling, a dedicated laundry room with vented dryer, refuse closet, and abundant storage. The home is available to be purchased furnished. Note: Some photos have been virtually staged for illustrative purposes only. Spanning 23rd to 24th Street, Flatiron House is comprised of two architecturally distinct buildings connected by a lush planted garden and glass walkway, offering a suite of amenities designed by COOKFOX. Residents enjoy an attended lobby, a fitness center with terrace, landscaped gardens, a residents’ lounge, and a game room. Ideally positioned at the crossroads of Chelsea and Flatiron, and just moments from Madison Square Park, the location provides effortless access to some of Manhattan’s finest dining, shopping, cultural institutions, and transportation

Features & Amenities

Interior Features

Common On Floor Common Area Flooring: Hardwood

Exterior Features

Building Garden

Building Amenities

Concierge Fitness Center

Building Information

Building Flatiron House
Building Data View Compliance & Permits
Total Units 44
Stories 22
Structure HighRise

Financial Details

Common Charges $5,944/mo
RE Taxes $82,140/yr ($6,845/mo)

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

132

Median Asking Price

$2.25M

Median $/Sqft

$1,775

Avg Days on Market

N/A

New This Week

11

Price Reduced

33%

Sold (30 Days)

11

Median Sale Price

$2.27M

Live data from RLS at REBNY • Updated 5/12/26, 1:56 PM EST

Similar Listings in Flatiron

View All

Location

Loading map...

39 W 23rd Street #21A, Flatiron, New York County

Floor Plans

Floor Plan 1

Building Information

Official NYC property records for this building

1982
Year Built
44 years old
1
Floors
M1-2
Zoning District

Tax & Assessment

Assessed Value: $554,400
Land Value: $208,350
Exemptions: $0

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

Lot Area: 9,250 SF
Building Area: 10,250 SF
Built FAR: 1.11

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 $5,944 per month. Confirm the exact amount with the listing broker before making an offer.

The current listed annual property tax is $82,140, or roughly $6,845 per month. Verify the current assessment with your attorney before closing.

This property has 4 bedrooms and 4 full bathrooms.

The listed interior living area is 3,194 square feet. Verify dimensions independently during due diligence.

According to MLS records, the building was constructed in 2021, making it approximately 5 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.

Pets are permitted at this property. Contact the listing broker for weight limits or breed restrictions.

At the current list price of $10,150,000 for 3,194 sq ft, the asking price per square foot is approximately $3,178. 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: RLS20090493
First Listed: 5/12/2026
On Market: 5/12/2026
Price Changed: 5/12/2026
Contract Date: 4/10/2026

Listing Courtesy of Compass - Carl Gambino

Listing Contact: (646) 465-1766

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 5/12/2026 at 5:56 PM UTC

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?

Your info is secure and never shared.

Call Text Email