511 8th Avenue is an 1899 building in Park Slope converted into four condos, a block from Prospect Park and about four minutes from the 7th Avenue F and G. The first two homes, both three-bedrooms, listed in October 2026, and the larger one comes with two private outdoor spaces.
Where Things Stand
The offering plan was submitted to the Attorney General on March 26, 2026, and the first two homes listed on October 20, 2026. As of November 1, 2026, both are available, neither is in contract yet, and the other two homes haven't been publicly listed. This is the same sponsor who is developing 361 Union Street, another project I'm tracking. Join my early access list below and you'll hear when the next home lists, before it reaches StreetEasy.
The Numbers So Far
As of November 1, 2026, from the public listings:
Available now: Residence 1, a three-bedroom, two-bath duplex of 2,302 square feet, including a lower-level recreation room nearly 56 feet long, with a 318-square-foot private courtyard and a 240-square-foot private yard
Asking price: $3,400,000, about $1,477 per square foot, with common charges plus taxes of about $1,715 per month
Available now: Residence 2, a three-bedroom, two-bath home of 1,301 square feet with a private storage room in the basement
Asking price: $2,595,000, about $1,995 per square foot, with common charges plus taxes of about $1,230 per month
In contract: none yet
Available home: Residence 1, 3 bed, $3,400,000
Available home: Residence 2, 3 bed, $2,595,000
I can share details on the homes here that aren't publicly listed yet. Send me a note.
Buying in a New Development?
New construction works differently than a resale: offering plans, sponsor contracts, closing costs and timelines all have their own rules.
A Closer Look at the Building
The 1899 building, in a landmark district, has been fully renovated inside into four homes, and it's a walk-up. Residence 1 is the standout: a duplex with the bedrooms set toward the rear, a side courtyard and a rear yard, and a long lower level that works as a playroom, gym or media room. Residence 2 puts the primary bedroom at the opposite end of the home from the living space.
Both have white oak floors, custom kitchen cabinetry with a large center island, a Fisher and Paykel appliance package, and an in-unit washer and dryer.
Want floor plans? Send me a note and I'll share them.
Park Slope Highlights
Park Slope is the Brooklyn neighborhood most people picture when they picture Brooklyn: brownstone-lined streets, Prospect Park at your doorstep, and two of the borough's best commercial avenues. 8th Avenue is one of its quietest, grandest streets, one block from the park.
The F and G at 7th Avenue, about a 4-minute walk
The 2 and 3 at Grand Army Plaza, about 12 to 15 minutes on foot
Prospect Park, one block east
The 7th Avenue shops and restaurants, a block west
Katie's Take
I track every new development in Brooklyn, and here's how this one compares: the two listed homes average about $1,736 a square foot, right in line with 34 Garfield Place (about $1,738), which sold out in under four months, and nearby 501 8th Avenue (about $1,722). The average hides a wide spread, though: Residence 2 is asking close to $2,000 a foot, near the top of Park Slope, while the duplex works out to under $1,500 because its footage includes the lower level. If you'll really use a big recreation room and two outdoor spaces, Residence 1 is the stronger value per foot.
Want to see it in person? Let's talk.