431 7th Avenue in Brooklyn before construction began.
431 7th Avenue is a new six-story building rising on a long-vacant lot on 7th Avenue between 14th and 15th Streets, inside the Park Slope Historic District Extension. The developer, Hive Developer, has filed an offering plan for six condos in a design the Landmarks Preservation Commission approved to fit in with its older neighbors.
Where Things Stand
The offering plan for 431 7th Avenue was submitted to the New York State Attorney General on January 28, 2026, and it is awaiting acceptance. No homes are for sale yet, there is no public pricing, and reservations can't be taken.
Across the 55 Brooklyn projects I've tracked from filing to acceptance, the typical wait was about 7 months, and most landed between 5 and 9 months, so at just over nine months this one is due. Join my early access list below and you'll hear about pricing and launch timing before it reaches StreetEasy.
What We Know So Far
Six residences in the offering plan filing. Earlier city approvals showed 10 units, so the final count will be confirmed in the accepted plan.
A six-story building with about 9,046 square feet of total floor area on the building permit
Likely two-bedroom homes, based on the building's size; the final mix comes with the plan
Offering plan submitted January 28, 2026
What's next: the Attorney General's review typically takes several months, and pricing becomes public once the plan is accepted.
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 approved design uses light beige brick with terracotta accents and cast-stone detailing, with punched windows set in a steady rhythm and rear balconies with metal railings that echo the fire escapes on nearby blocks. The rooftop bulkhead is set back to keep it out of view from the street, and the ground floor was proposed for a fitness use behind a metal storefront.
It's new construction on a block where infill sites rarely come up. Finishes, layouts and building features aren't public yet and will be laid out in the accepted plan.
Park Slope Highlights
Park Slope is the Brooklyn neighborhood most people picture when they picture Brooklyn: brownstone-lined blocks, Prospect Park at the top of the hill, and the shops and restaurants of 5th and 7th Avenues. 431 7th Avenue sits in the South Slope, where the blocks are a little quieter and the park is still only a couple of blocks away.
The F and G at 15th Street-Prospect Park, a short walk away
The R at Prospect Avenue, a few blocks west
Prospect Park and the 7th Avenue shops, both close by
Katie's Take
I track every new development filing in Brooklyn, and 431 7th Avenue is one of only three ground-up buildings in Park Slope's pipeline, alongside 308 14th Street and 241 13th Street; most of the other pending filings are conversions of existing houses. The closest recent comparison, 270 14th Street, has sold three of its four homes at about $1,449 a square foot, which is a fair marker for where new construction on this side of the Slope has been landing. With the filing now past the typical review window, acceptance and a first look at pricing could come in the next few months.
Your next Brooklyn home may be closer than you think. Let's talk.