Last updated on Apr 3, 2026

403 West 21st Street

Intimate prewar Chelsea co-op with just ten spacious apartments featuring classic details and modern amenities on a quiet tree-lined block. Steps from the High Line, Chelsea Market, and world-class dining, with low maintenance and flexible ownership policies.

Recent Sales (1)
All Units in Building (10)

Apt. 5W

2 beds

1 bath

$860,000 +7.6%

$799,000

Dec 18, 2024

View Full Sales History

Overview of 403 West 21st Street

403 West 21st Street is a charming prewar co-op located in the heart of Chelsea, featuring a boutique, turn-of-the-century brownstone façade. This five-story building houses just ten apartments, providing a sense of exclusivity and community. Residents benefit from a voice intercom system and a pet-friendly policy, making it an inviting home for both individuals and families. The building's flexible alteration policies allow for creative renovations, accommodating various living arrangements, including combinations for larger layouts.

The apartments at 403 West 21st Street are characterized by their spaciousness and classic details. Many units feature high ceilings, oversized double-hung windows, and hardwood flooring throughout. The well-designed layouts often include two bedrooms situated on opposite sides of the living area, maximizing privacy and natural light. Kitchens are equipped with modern stainless steel appliances, including dishwashers and microwaves, while bathrooms showcase stylish finishes. Notably, some apartments come with in-unit washer-dryers, enhancing convenience for residents.

Situated on a quiet, tree-lined block, the building is just steps away from a vibrant array of cultural and recreational destinations. Residents can easily access the High Line, Chelsea Piers, and numerous art galleries, restaurants, and shops, including Chelsea Market and the Meatpacking District. The neighborhood is well-connected by public transportation, with multiple subway lines and bus routes nearby, ensuring easy access to the rest of the city.

403 West 21st Street offers a unique opportunity to invest in a piece of NYC history, with low monthly maintenance fees and the potential for up to 80% financing. The building's welcoming policies for guarantors, gifting, and pied-à-terres further enhance its appeal, making it an attractive option for a diverse range of buyers.

Doorman

None

Type

Co-op

Year Built

1900

Apartments

10 (view all units)

Floors

Neighborhood

Chelsea (Manhattan)

Min Down

20%

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Area Map StreetView

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at 8th Ave and 25th 0.24 miles

at 8th Ave and 16th 0.32 miles

at 7th Ave 0.37 miles

Sales History

Price/Room (Est)

Why are we displaying the estimated price per room?

For some co-ops, instead of price per square foot, we use an estimate of the number of rooms for each sold apartment to chart price changes over time. This is because many co-op listings do not include square footage information, and this makes it challenging to calculate accurate square-foot averages.

By displaying the price per estimated room count, we are able to provide a more reliable and consistent metric for comparing sales in the building. While we hope that this gives you a clearer sense of price trends in the building, all data should be independently verified. All data provided are only estimates and should not be used to make any purchase or sale decision.

Price/Ft² (Est)

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Sales Summary

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Editorial Coverage

Maintenance Fees 101 + NYC co-ops with unbelievably-low monthlies under $1,000/month Tuesday, July 15, 2025

50 West 66th Street

between Central Park West & Columbus Avenue

Central Park West

The pinnacle of Upper West Side living. Exceptional condo residences with Central Park views and 50,000 SF of amenities. Early 2025 occupancy | 50% Sold

2 beds starting at $6,595,000
3 beds starting at $6,850,000
4 beds starting at $23,000,000
5 beds starting at $19,950,000
6+ beds starting at $85,000,000

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RLS IDX Data display by CityRealty.com, LLC. This 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. IDX information is provided exclusively for consumers' personal, non-commercial use and it may not be used for any purpose other than to identify prospective properties consumers may be interested in purchasing.

All information furnished regarding property for sale, rental or financing is from sources deemed reliable, but no warranty or representation is made as to the accuracy thereof and same is submitted subject to errors, omissions, change of price, rental or other conditions, prior sale, lease or financing or withdrawal without notice. All dimensions are approximate. For exact dimensions, you must hire your own architect or engineer and for no listing shall the number of bedrooms listed be considered a legal conclusion.

All closed sales data has been provided by the New York City Department of Finance via the Automated City Register Information System (ACRIS). No warranty or representation is made as to the accuracy of any data provided by ACRIS or any other sources.

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An equal housing opportunity

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403 West 21st Street

Overview of 403 West 21st Street

Maps &3D Aerial Views

Sales History

Why are we displaying the estimated price per room?

Sales Summary

Pricing Comparison of Similar Buildings

Editorial Coverage

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Market Data

Market Insight

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