Last updated on Apr 3, 2026
121 West 78th Street
Historic 1886 Guastavino townhouse featuring five unique apartments with Moorish-Romanesque details, fireplaces, and private outdoor spaces. Prime Upper West Side block near Central Park, offering pet-friendly living with vibrant community charm.
{"id":4482,"saveDeleteStatus":2}
All Apartments For Sale
- Recent Sales (1)
- All Units in Building (16)
Unit #
Beds
Baths
Size
Closing Price
Price / Ft2
Asking Price
Sold on
Overview of 121 West 78th Street
121 West 78th Street is a charming co-op townhouse located in the heart of the Upper West Side, designed by renowned architect Rafael Guastavino and completed in 1886. This self-managed building consists of five unique apartments, each showcasing Moorish motifs blended with Romanesque and Queen Anne styles, featuring the famous Guastavino Arch. The building is situated on a street recognized as one of the best blocks in NYC, fostering a vibrant community with organized block parties and proximity to Central Park and various cultural attractions.The apartments at 121 West 78th Street offer a variety of layouts, including split two-bedroom and duplex one-bedroom options. Common features include wood burning fireplaces, exposed brick walls, and private outdoor spaces such as terraces. The interiors are designed for comfort and functionality, with ample closet space, renovated bathrooms, and large windows that provide abundant natural light. The building also includes shared laundry and storage facilities in the basement, enhancing convenience for residents.
Residents enjoy a pet-friendly policy at the discretion of the board, making it an appealing choice for pet owners. The location is ideal for those who appreciate a vibrant urban lifestyle, with easy access to dining, shopping, and transportation options, including multiple subway lines. The nearby American Museum of Natural History and Central Park offer additional recreational opportunities, making this building a desirable residence for those seeking a blend of charm and modern amenities.
Doorman
None
Type
Co-op
Year Built
1900
Converted:
1979
Apartments
Floors
5
Neighborhood
Broadway Corridor (Manhattan)
Min Down
20%
Fly around the building!
Maps &
3D Aerial Views
View school info, local attractions, transportation options & more.
Experience amazing 3D aerial maps and fly throughs.
{
"key" : "AIzaSyDquABdSLhathmwfnoTcYwA1BY6coZZyZk",
"lat": 40.78187,
"lng": -73.97682,
"marker": {
"icon": "https://img3.cityrealty.com/neo/i/w/amenities/base.png"
}
}
- 1
- B
- C
- 2
- 3
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)
Sales Summary
Show:
Pricing Comparison of Similar Buildings
View Detailed Comparison
between Second Avenue & Third Avenue
Lenox Hill
Gracious Upper East Side condos with Central Park and skyline views. Exquisite half- and full-floor homes by Rafael de Cardenas
-
Search
NYC Apartments for Sale NYC Apartments for Rent New Development Condos Condo & Co-Ops Rental Buildings Sell Your Apartment -
Market Data
Market Reports & Research NYC Real Estate Sales Stats Recent Sales Search NYC Closed Sales CityRealty Indices -
Market Insight
Features Top 10 Lists Rental Building Offers Our Magazine 6sqft Carter's View -
CityRealty
Promote Yourself on CityRealty Contact Us -
My Account
Sign In Sign Up
Get the CityRealty Newsletter
6sqft delivers the latest on real estate, architecture, and design, straight from New York City.
Like us on Facebook to keep up with the trends and
latest news around New York City real estate. Follow us on Twitter to keep up with the trends and
latest news around New York City real estate. Follow us on Instagram. Follow us on Linkedin.
6sqft delivers the latest on real estate, architecture, and design, straight from New York City.
Like us on Facebook to keep up with the trends and latest news around New York City real estate. Follow us on Twitter to keep up with the trends and
latest news around New York City real estate. Follow us on Instagram. Follow us on Linkedin.
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.
CityRealty is committed to ensuring digital accessibility for individuals with disabilities. We are continuously working to improve the accessibility of our web experience for everyone, and we welcome feedback and accommodation requests. If you wish to report an issue or seek an accommodation, please contact us at accessibility@cityrealty.com.
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.
CityRealty is committed to ensuring digital accessibility for individuals with disabilities. We are continuously working to improve the accessibility of our web experience for everyone, and we welcome feedback and accommodation requests. If you wish to report an issue or seek an accommodation, please contact us at accessibility@cityrealty.com.
An equal housing opportunity 
{"1":[40.775,-73.94,"East Side","_es"],"2":[40.79,-73.99,"West Side","_ws"],"11":[40.76,-73.98,"Midtown","_m"],"3":[40.736,-73.99,"Downtown","_d"],"13":[40.711309,-74.01,"Financial
District\/BPC","_fd"],"4":[40.682676,-73.973007,"Brooklyn","_b"],"12":[40.8444,-73.9376,"Upper Manhattan","_um"],"5":[40.7477089,-73.930411,"LIC \/ Queens","_qns"],"18":[40.8889782,-73.9025,"The Bronx","_bx"]}
District\/BPC","_fd"],"4":[40.682676,-73.973007,"Brooklyn","_b"],"12":[40.8444,-73.9376,"Upper Manhattan","_um"],"5":[40.7477089,-73.930411,"LIC \/ Queens","_qns"],"18":[40.8889782,-73.9025,"The Bronx","_bx"]}