Last updated on Jul 16, 2026
407 Keap Street
Well-maintained pre-war HDFC cooperative in Williamsburg featuring renovated kitchens, in-unit washers/dryers, and hardwood floors. Income-restricted building with low maintenance fees, pet-friendly policies, and prime access to L and G trains. Currently, 1 apartment is for sale.
All Apartments For Sale
- All Apartments For Sale (1)
- Recent Sales (2)
- All Units in Building (27)
Unit #
Beds
Baths
Size
Price / Ft2
Price
Listed on
Days on Market
2 beds
1 bath
$699,000
Jul 9, 2026
7 days
{"mask_id":"fLBlhXQnkFa","listing_id":"3277989","portfolio":[],"saveDeleteStatus":2,"token":"57bc30ef5b1072a376114edc30981db302c9affc60e0a5e1-407a42604cfe1835aa2837cb1703d5bdb3fec16c"}
#5:
$699,000 - 2 beds
#5:
$699,000 - 2 beds
Unit #
Beds
Baths
Size
Closing Price
Price / Ft2
Asking Price
Sold on
Overview of 407 Keap Street
407 Keap Street is a well-maintained pre-war HDFC cooperative located in the heart of Williamsburg, New York City. The building features a variety of apartment layouts, including two-bedroom and one-bathroom units, with many apartments showcasing high ceilings and hardwood floors. Residents enjoy modern amenities such as renovated kitchens equipped with stainless steel appliances and in-unit washers and dryers, while some units also offer private outdoor spaces. The building's low maintenance fees and a 5% flip tax make it an attractive option for both buyers and renters alike.The apartments at 407 Keap Street are designed for flexibility, with layouts that can accommodate different living arrangements, whether as a spacious one-bedroom or a two-bedroom setup. The building is income-restricted, allowing for a maximum household income of 165% of the Area Median Income, ensuring accessibility for a diverse range of residents. Its prime location offers easy access to public transportation, with the L and G subway lines just a few blocks away, making commuting convenient.
Surrounded by a vibrant community, residents are within walking distance of numerous shops, cafes, and restaurants, enhancing the appeal of living in this dynamic neighborhood. The building is also pet-friendly, allowing for a more inclusive living environment. Overall, 407 Keap Street presents a unique opportunity for those looking to own or rent in one of Brooklyn's most sought-after areas.
Doorman
None
Type
Co-op
Year Built
1910
Apartments
Floors
6
Neighborhood
Williamsburg (Brooklyn)
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.
Amenities
- Pre War
{
"key" : "AIzaSyDquABdSLhathmwfnoTcYwA1BY6coZZyZk",
"lat": 40.71111,
"lng": -73.95354,
"marker": {
"icon": "https://img3.cityrealty.com/neo/i/w/amenities/base.png"
}
}
- G
- L
- J
- M
- Z
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:
Sales History by Apartment Size
View Full Closing History
Show:
Pricing Comparison of Similar Buildings
View Detailed ComparisonEditorial Coverage
Alternate Addresses
- 347 South 1 Street
- 349 South 1 Street
- 401 Keap Street
- 403 Keap Street
- 405 Keap Street
- 407 Keap Street
- 409 Keap Street
between West 96th Street & West 95th Street
Riverside Dr./West End Ave.
Upper West Side condos from $995K near Riverside Park and the Hudson River. Occupancy 2025 | 30,000 SF of indoor/outdoor amenities.
-
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"]}