Milton Coste

Licensed Real Estate Associate Broker

(917) 416-7433
10 Madison Square W #16D

For Sale · Listing by Sothebys International Realty

10 Madison Square W #16D

Flatiron, Manhattan

$12,500,000

Interested in this property?
Active For Sale • Condo

$12,500,000

$3,778 per sq ft

10 Madison Square W #16D

Flatiron, Manhattan

10 Madison Square West

MLS® #RLS20123271

RLS at REBNY

Listing by Sothebys International Realty

4
Bedrooms
4.5
Baths
3,309
Sq. Ft.
1915
Year Built

Quick Summary

Bedrooms 4
Bathrooms 0 full, 1 half
Living Area 3,309 sq ft
Lot Size 30,528 sq ft
Year Built 1915
Ownership Condo
HOA/Common Charges $5,488/mo
Property Taxes $86,568/yr
Neighborhood Flatiron
Floor 16 of 24

Property Highlights

  • Views: Skyline, See Remarks
  • Exposure: East,South facing
  • Climate Control: Central Air

Property Details

Type Condo
Ownership Condominium
Total Rooms 6
Baths 4 Full, 1 Half
Floor 16 of 24
View Skyline, See Remarks
Exposure East,South
Cooling Central Air
Pets Yes
Year Built 1915
Living Area 3,309 sq ft
Structure Type HighRise,MultiFamily
Furnished Unfurnished
Lot Size 30,528 sq ft
Block/Lot 00826/1101

Listing History

Event Date Price Change
Listed Oct 29, 2026 $12,500,000 -
Currently Oct 29, 2026 $12,500,000 -

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
Sep 16, 2026 Unit 8G 3 BR $5,350,000 $2,273
Aug 18, 2026 Unit 2C 2 BR $3,050,000 $2,128
Aug 12, 2026 Unit 2F 3 BR $6,500,000 $2,719
See every sale in this building

Description

Enjoy spectacular protected views of Madison Square Park and the Flatiron Building from an impeccably crafted 3,309 square foot, 4-bedroom, 4.5-bathroom loft-like corner home. Apartment 16D is enviably sited high atop the prestigious 2016 residential conversion of the 1915 limestone and brick landmark designed by William Van Alen, of Chrysler Building fame. The thoughtful floor plan was conceived by noted American architect and designer, Alan Wanzenberg. There has been no other park-facing unit of this size available for resale on the top 6 floors of 10 Madison Square West. An Entry Gallery and Hallway finished in Venetian plaster lead to the expansive corner Great Room (22'9 by 37'2), distinguished by stunning views of Madison Square Park and the surrounding iconic limestone buildings. The adjacent Chef’s Kitchen is well-appointed with classic white SieMatic cabinetry, Bianco Carrera marble, top-of-the-line appliances by Sub-Zero, Wolf and Miele and features a windowed Dining Area and a Breakfast Bar. The Primary Suite is comprised of a sumptuous Bedroom overlooking the park, 3 large custom-designed walk-in closets, and a lavish Primary Bath which includes a double vanity, soaking tub, and separate stall shower and is finished with Carrara marble walls, radiant heated floors and Dornbracht fixtures. Each of the 3 generously proportioned secondary Bedrooms enjoy open southern skies and feature en suite bathrooms and generous closets; the fourth also includes a walk-in closet. A Powder Room and Utility Closet with a side-by-side washer and vented dryer complete this exceptional home. All the state-of-the-art windows have been fitted with custom electronic window treatments. Services include a full-time Doorman, Concierge, Porter and an on-site Resident Manager. Amenities include a 10,000 square foot Residents’ Club with a Fitness Center managed by The Wright Fit, a 60 foot lap pool and hot tub, Yoga, Pilates and high energy studios, with a spa treatment room, locker rooms with private steam rooms and saunas, a Children's Playroom, bike storage and a second floor Courtyard Garden designed by award-winning landscape architects, Matthews Nielsen. Operating Assessment of $1,393.99 is billed monthly. Showings permitted by appointment with 48 hours' notice, 1:00PM - 4:00PM on Mondays, Wednesdays, and Thursdays.

Features & Amenities

Interior Features

Breakfast Bar Entrance Foyer High Ceilings Soaking Tub Sauna Walk In Closets Common On Floor In Unit See Remarks Window Treatments

Exterior Features

Building Courtyard Building Garden

Building Amenities

Bike Storage Cold Storage Common Playroom Concierge Elevators Fitness Center Sauna Steam Room Yoga Studio Sauna

Appliances

Dryer Dishwasher Washer

Building Information

Building 10 Madison Square West
Building Data View Compliance & Permits
Total Units 125
Stories 24
Structure HighRise,MultiFamily

Financial Details

Common Charges $5,488/mo
RE Taxes $86,568/yr ($7,214/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

118

Median Asking Price

$2.87M

Median $/Sqft

$1,900

Avg Days on Market

N/A

New This Week

4

Price Reduced

25%

Sold (30 Days)

12

Median Sale Price

$1.95M

Live data from RLS at REBNY • Updated 10/29/26, 12:33 PM EST

Similar Listings in Flatiron

View All

Location

Loading map...

10 Madison Square W #16D, Flatiron, New York County

Floor Plans

Floor Plan 1

Building Information

Official NYC property records for this building

1915
Year Built
111 years old
24
Floors
122
Residential Units
C5-2
Zoning District
Condominiums

Tax & Assessment

Assessed Value: $73,683,944
Land Value: $7,380,004
Exemptions: $0

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

Lot Area: 22,471 SF
Building Area: 282,140 SF
Built FAR: 12.56
Allowed FAR: 10

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 $5,488 per month. Confirm the exact amount with Milton Coste before making an offer.

The current listed annual property tax is $86,568, or roughly $7,214 per month. Verify the current assessment with your attorney before closing.

This property has 4 bedrooms and 4 full bathrooms and 1 half bathroom.

The listed interior living area is 3,309 square feet. Verify dimensions independently during due diligence.

According to MLS records, the building was constructed in 1915, making it approximately 111 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 $12,500,000 for 3,309 sq ft, the asking price per square foot is approximately $3,778. 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: RLS20123271
First Listed: 10/29/2026
On Market: 10/29/2026
Price Changed: 10/29/2026
Contract Date: 10/29/2026

Listing Courtesy of Sothebys International Realty - Roberta Golubock

Listing Contact: (212) 606-7704

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 at REBNY

RLS Data display by Keller Williams NYC. Data last updated on 10/29/2026 at 4:33 PM UTC

See it in person

Milton Coste - NYC Real Estate Broker

Milton Coste

Licensed Real Estate Associate Broker

Keller Williams NYC

View Bio →

Sale history, taxes, violations and comps for this unit

(917) 416-7433 WhatsApp Email Milton
Hablo Español

Flatiron Market Update

12 sales last 30 days · $2.87M median · 9.8 months supply

Read Full Report

New listings in this building

Quick Facts

Status Active Type Condo Neighborhood Flatiron Borough Manhattan
County New York
Floor 16 of 24
Year Built 1915
First Listed 10/29/2026
Living Area 3,309 sqft
Common Charges $5,488/mo
Annual Tax $86,568

Monthly Costs Estimate

Down Payment 20%

$2,500,000

Interest Rate Loading...

Source: Freddie Mac PMMS

Loan Term 30 years

Est. Monthly Payment

$0

Principal & Interest $0
PMI (under 20% down) $0
Common Charges $5,488
Est. Taxes $7,214
Total Monthly $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 $10M to $14,999,999 at 3.25%, applied to the whole purchase price. It is due in cash at closing and cannot be financed.

Estimated mansion tax at asking

$406,250

Run the numbers on a different offer price

Estimate based on the asking price. Confirm your own obligation with your real estate attorney.

Back to Search

Find more properties

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?

Are you already working with an agent? (optional)

Your info is secure and never shared.

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.

Call Text Email