Milton Coste

Licensed Real Estate Associate Broker

(917) 416-7433

Under Contract – Backup offers may be accepted

29 W 21st Street #4

Pending · Listing by Compass

29 W 21st Street #4

Flatiron, Manhattan

$3,245,000

Interested in this property?
Pending For Sale Condo

$3,245,000

$1,559 per sq ft

29 W 21st Street #4

Flatiron, Manhattan

MLS® #RLS10946205

RLS at REBNY

Listing by Compass

2
Bedrooms
3
Baths
2,082
Sq. Ft.
1910
Year Built

Quick Summary

Bedrooms 2
Bathrooms 3
Living Area 2,082 sq ft
Year Built 1910
Ownership Condo
HOA/Common Charges $2,236/mo
Property Taxes $34,488/yr
Neighborhood Flatiron
Floor 4 of 7

Property Highlights

  • Exposure: North,South facing
  • Climate Control: Central Air
  • Character: Pre-war building (1910)

Property Details

Type Condo
Ownership Condominium
Total Rooms 5
Baths 3 Full
Floor 4 of 7
Exposure North,South
Cooling Central Air
Pets Yes, CatsOk, DogsOk
Year Built 1910
Living Area 2,082 sq ft
Structure Type MultiFamily
Flooring Hardwood
Furnished Unfurnished
Parcel # 0823-1704
Block/Lot 00823/0000

Listing History

Event Date Price Change
Listed Jan 27, 2023 $3,245,000 -
Currently Aug 21, 2026 $3,245,000 -

Description

Iron Lofts is Flatiron’s newest boutique development with just 6 full-floor, classic condominium lofts in the neo-industrial heart of the Ladies’ Mile Historic District. Fully renovated and carved from a landmarked 1909 Renaissance Revival apparel building, this new portfolio of statement homes warmly embraces its history, punctuated by Scandinavian design principles of simplicity, function and textural blends. 2082 square feet of architectural perfection begin with a private key-lock elevator that leads to the gracious entry foyer and onward to a grandly-proportioned living area. Wide-planked floors of smoked oak stretch to oversized south-facing windows and continue paneling the walls beneath adjustable recessed cove lighting. An open kitchen offers top-of-the-line appliances from Miele and Sub-Zero and are tastefully incorporated into locally-milled cabinetry. Spacious bedrooms including a lavish primary suite, each include serene en-suite baths and generous closet space outfitted with custom millwork. A third full bathroom accommodates guests, attired in penny tile, granite, and glass. Additionally, a perfectly proportioned home office, den or media suite offers separation and privacy. All homes include private laundry rooms with sink and linen storage. Central air conditioning. Oversized new windows. 24-hour remote monitoring and secure package delivery is coordinated via virtual lobby attendant, offering convenience and security with the utmost of discretion. Moments from Fifth Avenue shopping, transit, and Madison Square Park. A special and rare offering of timeless elegance. The Complete Offering Terms are available in an offering plan available from Sponsor. File no. CD-210292. Equal Housing Opportunity.

Features & Amenities

Interior Features

Double Vanity High Ceilings Recessed Lighting Soaking Tub Walk In Closets Common On Floor Common Area In Unit Flooring: Hardwood

Building Information

Building Data View Compliance & Permits
Total Units 6
Stories 7
Structure MultiFamily

Financial Details

Common Charges $2,236/mo
RE Taxes $34,488/yr ($2,874/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

85

Median Asking Price

$2.40M

Median $/Sqft

$1,839

Avg Days on Market

N/A

New This Week

1

Price Reduced

35%

Sold (30 Days)

15

Median Sale Price

$2.49M

Live data from RLS at REBNY • Updated 8/20/26, 10:53 PM EST

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Location

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29 W 21st Street #4, Flatiron, New York County

Floor Plans

Floor Plan 1

Building Information

Official NYC property records for this building

1925
Year Built
101 years old
2
Floors
2
Residential Units
R5B
Zoning District
Two Family Dwellings

Tax & Assessment

Assessed Value: $81,540
Land Value: $16,980
Exemptions: $0

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

Lot Area: 2,547 SF
Building Area: 1,600 SF
Built FAR: 0.63
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 $2,236 per month. Confirm the exact amount with Milton Coste before making an offer.

The current listed annual property tax is $34,488, or roughly $2,874 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 2,082 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.

Pets are permitted at this property. Contact Milton Coste for weight limits or breed restrictions.

At the current list price of $3,245,000 for 2,082 sq ft, the asking price per square foot is approximately $1,559. 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) 416-7433
MLS® ID: RLS10946205
First Listed: 10/26/2023
On Market: 1/27/2023
Pending Since: 10/26/2023
Contract Date: 1/26/2023

Listing Courtesy of Compass - BRIAN L BABST

Listing Contact: (646) 456-0034

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 8/21/2026 at 2:53 AM UTC

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Flatiron Market Update

15 sales last 30 days · $2.40M median · 5.7 months supply

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Quick Facts

Status Pending Type Condo Neighborhood Flatiron Borough Manhattan
County New York
Floor 4 of 7
Year Built 1910
First Listed 10/26/2023
Living Area 2,082 sqft
Common Charges $2,236/mo
Annual Tax $34,488

Monthly Costs Estimate

Down Payment 20%

$649,000

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 $2,236
Est. Taxes $2,874
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 $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

$48,675

Run the numbers on a different offer price

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

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