Welcome to 103 Joralemon Street, four condos in a gut-renovated 1900 building in the Brooklyn Heights Historic District, steps from Borough Hall. The New York State Attorney General has accepted the offering plan, so estimated pricing is now on file.
The sponsor, Mortar Group, has developed fifteen other projects around the city, including 100 Gold and 41 Newel, and this is its most prestigious address yet.
Where Things Stand
The New York State Attorney General accepted the offering plan for 103 Joralemon Street on August 7, 2026. Acceptance means the sponsor has filed its full disclosure with the state, including the price schedule, the projected building budget and the projected first closing, and can now sign contracts. Units are not publicly listed yet. Acceptance doesn't mean sales are about to start: construction runs on its own timeline, so the launch depends on how far along the building is. Join my early access list below and you'll hear about the sales launch before it reaches StreetEasy.
What the Offering Plan Shows
These are estimates from the sponsor's offering plan as accepted on August 7, 2026. Prices and costs can change through amendments before sales launch.
Four residences: three full-floor three-bedroom homes and a two-bedroom garden duplex
Estimated pricing: three-bedrooms from $2,995,000 to $3,295,000; the two-bedroom garden duplex at $3,495,000
Estimated monthly costs: common charges plus real estate taxes are estimated at $2,177 to $4,440 per month
Projected first closing: early 2027
All figures are estimates from the offering plan and subject to change.
New to offering plans? The offering plan is the legal document that creates the condo and lays out every detail of the purchase, including the sponsor's estimates. Reach out with any questions about how it works.
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
Three of the homes each take a full floor, and the two-bedroom garden duplex comes with a private patio and yard plus lower-level space. One upper home has a private terrace and the top-floor home has a private roof terrace. Inside, the plan calls for white oak floors, quartzite counters, a Bertazzoni range, a Monogram refrigerator and a Bosch washer and dryer in every home, along with VRF heating and cooling and cellar storage. It's a walk-up, with no elevator.
Brooklyn Heights Highlights
Brooklyn Heights is the borough's most historic neighborhood and home to New York City's first designated historic district. Tree-lined streets of 19th-century townhouses, the Promenade and its harbor views, and quick access to Downtown Brooklyn and Lower Manhattan make it one of the most enduring addresses in the city.
The N and R at Court Street, about a 4-minute walk
The 2, 3, 4 and 5 at Borough Hall, about 6 minutes
The A, C and F at Jay Street-MetroTech, a short walk away
The Promenade, Montague Street and Brooklyn Bridge Park, all close by
Katie's Take
I track every new development filing in Brooklyn, and this one stands out because new condos almost never come to the Brooklyn Heights Historic District. Full-floor three-bedrooms estimated from about $3M, most with private outdoor space, are rare in this neighborhood, and with only four homes in the building, there won't be many chances at one.
Your next Brooklyn home may be closer than you think. Let's talk.