328 12th Street is a three-home condo conversion in the South Slope, where an existing three-story house is being gut renovated and enlarged upward and back. It's the kind of small, garden-equipped project that gives buyers a brand-new home on a classic Park Slope rowhouse block.
Where Things Stand
The offering plan for 328 12th Street was submitted to the New York State Attorney General on March 4, 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, which points to acceptance around the end of 2026. Join my early access list below and you'll hear about pricing and launch timing before it reaches StreetEasy.
What We Know So Far
Three residences in a renovated and enlarged house
About 5,696 square feet of total floor area on the building permit after the enlargement, so homes likely average about 1,900 square feet
Likely family-size homes of three bedrooms or more; the final mix comes with the plan
A garden is part of the plan
Offering plan submitted March 4, 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
With three homes, this is about as small as a condo building gets. The renovation adds height and depth to the existing house, so the homes should be well above the Park Slope new development average in size. The garden will most likely go with the lowest home.
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. 328 12th Street sits in the South Slope, close to both avenues.
The F, G and R at 4th Avenue-9th Street, about a 6-minute walk
The F and G at 7th Avenue, about 6 minutes
The 5th and 7th Avenue shops close by, with Prospect Park within about a 20-minute walk
Katie's Take
I track every new development filing in Brooklyn, and 328 12th Street has one of the largest likely home sizes among Park Slope's pending filings, at roughly 1,900 square feet each across just three homes. For context, 34 Garfield Place sold out its four large homes, averaging about 2,300 square feet, in about four months at around $1,738 a square foot. Large condos in Park Slope don't sit long, so if you need townhouse-size space without buying a townhouse, follow this one closely as acceptance nears.
Your next Brooklyn home may be closer than you think. Let's talk.