Milton Coste

Licensed Real Estate Associate Broker

(917) 416-7433

SOLD FOR $883,000

· Closed December 21, 2020

434 W 20th Street #9
Closed For Sale Co-op

$883,000

434 W 20th Street #9

Chelsea, Manhattan

MLS® #RLS10662042

RLS at REBNY

Listing by Compass

1

Bedroom

1

Bath

N/A

Sq. Ft.

1855

Year Built

Quick Summary

Bedrooms 1
Bathrooms 1
Year Built 1855
Ownership Co-op
Maintenance $1,216/mo
Neighborhood Chelsea
Floor 5 of 5

Property Highlights

  • Views: City
  • Exposure: South,West facing
  • Outdoor Space: Rooftop

Property Details

Type Co-op
Ownership Stock Cooperative
Total Rooms 3
Baths 1 Full
Floor 5 of 5
View City
Exposure South,West
Cooling Central Air
Pets Yes
Cross Street Ninth Avenue/Tenth Avenue
Year Built 1855
Architectural Style Prewar
Parcel # 0717-0061-00434-000-0000009
Block/Lot 717/61

Listing History

Event Date Price Change
Listed Sep 20, 2007 $883,000 -
Currently May 5, 2026 $883,000 -

Description

Mint condition one bedroom with extra-high ceilings, wood-burning fireplace, and HUGE ROOF TERRACE. This bright top-floor home offers so much to love! The entryway has two closets plus mud-room space, as well as a long gallery wall. The open kitchen, with lots of cabinets and counter space also features a breakfast bar. In the living room, the 10-foot high ceiling, a skylight, and two big windows make it feel bright and spacious, while a wood-burning fireplace will make it cozy. French doors lead into the peaceful bedroom with a southern exposure, tree-top views, a walk-in closet, and extra storage. The en suite marble bath also faces south with a large window in the shower that floods the room with light. The whole apartment is cooled by two split unit A/Cs and there's even a dedicated storage unit in the basement. But the best is yet to come ... climb the spiral staircase and emerge onto a gorgeous ROOF TERRACE that's nearly as big as the apartment itself! This amazing outdoor space offers 360 degree views of the city skyline, space for lounging and dining, and is equipped with electricity and water. Mere photos can't do it justice; this is one roof deck you need to see in person! 434 West 20th Street is a boutique brownstone coop in the heart of Chelsea, with just seven units, situated on a tree-lined street filled with brownstones. Pets and washer-dryers are allowed, but no subletting and no pied-a-terres.

Features & Amenities

Interior Features

Entrance Foyer Building Washer Dryer Install Allowed Fireplace

Exterior Features

Rooftop

Appliances

Dryer Washer

Building Information

Financial Details

Maintenance $1,216/mo
Sale Price $883,000

Chelsea is the epicenter of New York’s contemporary art world and a hub for innovative architecture. Home to the High Line and Chelsea Market, the neighborhood mixes industrial history with modern luxury. The real estate market here is dominated by high-end condominium developments designed by world-renowned architects, alongside historic pre-war lofts and historic townhouses in the Chelsea Historic District.

Chelsea Live Market Data

View Neighborhood

Active Listings

313

Median Asking Price

$1.84M

Median $/Sqft

$1,775

Avg Days on Market

N/A

New This Week

31

Price Reduced

26%

Sold (30 Days)

35

Median Sale Price

$2.05M

Live data from RLS at REBNY • Updated 5/5/26, 2:07 PM EST

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Location

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434 W 20th Street #9, Chelsea, New York County • Near Ninth Avenue/Tenth Avenue

Building Information

Official NYC property records for this building

1945
Year Built
81 years old
13
Floors
8764
Residential Units
R7-2
Zoning District
Elevator Apartments

Tax & Assessment

Assessed Value: $790,924,050
Land Value: $117,450,000
Exemptions: $0

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

Lot Area: 2,675,000 SF
Building Area: 8,942,176 SF
Built FAR: 3.34
Allowed FAR: 3.44

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 monthly maintenance are $1,216 per month. Confirm the exact amount with the listing broker before making an offer.

This property has 1 bedroom and 1 full bathroom.

According to MLS records, the building was constructed in 1855, making it approximately 171 years old.

This listing is a co-op (stock cooperative). Buyers purchase shares in a corporation rather than real property, and the board must approve all sales.

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

To schedule a private showing, contact Milton Coste at (917) 416-7433 or mcoste@kwnyc.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: RLS10662042
First Listed: 9/20/2007
Price Changed: 2/5/2021
Closed: 12/21/2020
Contract Date: 8/27/2020

Listing Courtesy of Compass - Jane Calvin

Listing Contact: (347) 645-7649

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 5/5/2026 at 6:07 PM UTC

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