150 Prospect Park West is a six-story 1921 elevator building directly across from Prospect Park, and an offering plan has been filed to make it 30 condos. It's a conversion of an existing building rather than new construction, and the sponsor entity is 150 PPW Residences LLC. I live in a building like this that was converted in 2006, and I think these are real opportunities for prewar charm blended with modern conveniences. New condos with an elevator directly on the park are extremely rare.
Where Things Stand
The offering plan for 150 Prospect Park West was submitted to the New York State Attorney General on November 26, 2025, 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, and this one is now past 11 months. Conversions of existing buildings can run on their own timeline: in many NYC conversions, residents already living in the building get a window to buy their own apartment before it's offered to the broader market, so not every home may be available at once. Join my early access list below and you'll hear about pricing and launch timing before it reaches StreetEasy.
What We Know So Far
30 residences across six floors, about 35,300 square feet in all
A mix of one-, two- and three-bedroom homes
An elevator, bike storage, private storage and laundry
Offering plan submitted November 26, 2025
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
At 30 homes with an elevator, 150 Prospect Park West is a much larger building than the brownstone conversions that make up most of Park Slope's pipeline. The building dates to 1921 and is being reimagined as condos, with the park as its front yard. The accepted plan will spell out the renovation scope, finishes and how the homes will be offered.
Park Slope Highlights
Park Slope is the Brooklyn neighborhood most people picture when they picture Brooklyn: brownstone-lined blocks, Prospect Park at your doorstep, and the shops and restaurants of 5th and 7th Avenues. 150 Prospect Park West sits directly on the park, which is about as good as a Park Slope address gets.
The F and G at 7th Avenue, about a 4-minute walk
The F, G and R at 4th Avenue-9th Street, about 15 minutes
Prospect Park across the street, with the Long Meadow, playgrounds and the Grand Army Plaza Greenmarket close by
Katie's Take
I track every new development filing in Brooklyn, and 150 Prospect Park West is one of only two elevator buildings among Park Slope's pending filings, and the only one on the park. Most of what's selling in the Slope right now is four or five homes in a converted house, at about $1,449 to $1,941 a square foot, so a 30-home elevator building on Prospect Park West sits in a different category. There will be real choice at launch, but I'd expect the park-facing homes to go first, so get on the list early if a park view matters to you.
Your next Brooklyn home may be closer than you think. Let's talk.