NEW DEVELOPMENT: OPENED IN 2023
688 6th Avenue
condo located in South Slope - Greenwood Heights, between 21st Street & 22nd Street
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- Recent Sales (3) $1,467 Avg. price/ft2
- All Units in Building (3)
Overview of 688 6th Avenue
688 6th Avenue is a new development condo with 3 apartments, located in South Slope - Greenwood Heights very close to the M, 1, F, N and R subway lines.
Year Built
2023
Apartments
3
Floors
3
Neighborhood
South Slope - Greenwood Heights (Brooklyn)
Min Down
20%
3Apartments
View All Past
Sales & Rentals
in Building
Sales & Rentals
in Building
Amenities
- Walk Up
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Nearby Subways
- M
- F
- 1
- N
- R
- 2
- 3
- L
- C
- E
- 6
- Q
- 4
- 5
- A
Sales History
View Full Closing HistorySales Summary
View Summary by Apartment SizePricing Comparison of Similar Buildings
View Detailed ComparisonAlternate Addresses
- 298 21 Street
- 298 21st Street
- 688 6 Avenue
- 688 Avenue of the Americas
between Second Avenue & Third Avenue
Lenox Hill
Comfortable elegance on the Upper East Side. Whole-life amenities + complimentary 1-year memberships to Sollis Health and Omacasa | Immediate occupancy
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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. ©2025 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 
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