Foundations Underway for 450-Unit Project at 287 Flatbush Avenue Extension in Downtown Brooklyn

287 Flatbush Avenue Extension. Photo by Michael Young.287 Flatbush Avenue Extension. Photo by Michael Young.

Foundation work is progressing at 287 Flatbush Avenue Extension, the site of a five-tower, 450-unit residential complex in Downtown Brooklyn. Designed by J Frankl Architects and developed by Jacob Kohn of The Jay Group, the conjoined structures are planned to stand 27 stories and 293 feet tall, each with 90 units and two cellar levels. The property is located at the corner of Flatbush Avenue Extension and Willoughby Street.

The site was fully excavated and the buildings’ foundations have begun formation since our last update in early January, when construction had yet to break ground on the cleared lot. Crews have formed the slab and assembled bundles of rebar at the locations of the substructure’s forthcoming columns and walls. Based on the rapid pace of progress, work could potentially reach street level before the end of spring.

287 Flatbush Avenue Extension. Photo by Michael Young.

287 Flatbush Avenue Extension. Photo by Michael Young.

287 Flatbush Avenue Extension. Photo by Michael Young.

287 Flatbush Avenue Extension. Photo by Michael Young.

287 Flatbush Avenue Extension. Photo by Michael Young.

287 Flatbush Avenue Extension. Photo by Michael Young.

287 Flatbush Avenue Extension. Photo by Michael Young.

287 Flatbush Avenue Extension. Photo by Michael Young.

287 Flatbush Avenue Extension. Photo by Michael Young.

287 Flatbush Avenue Extension. Photo by Michael Young.

287 Flatbush Avenue Extension. Photo by Michael Young.

287 Flatbush Avenue Extension. Photo by Michael Young.

The rendering in the main photo looks northwest at the development from the intersection of Willoughby Street and Fleet Place. The image shows the conjoined towers surrounding the 12-story residential holdout at 112 Fleet Place, which is shaded gray. The new structure will begin with a seven-story podium clad in a uniform façade of white and black metal paneling surrounding floor-to-ceiling windows. After a shallow setback, the towers’ façades become irregular, with a framework of white paneling and balconies scattered seemingly at random across the southern and eastern faces. The walls abutting the corner holdout will be left mostly blank.

287 Flatbush Avenue Extension. Photo by Michael Young.

287 Flatbush Avenue Extension. Photo by Michael Young.

The zoning diagram below is oriented looking east and shows the five towers conjoined to form a J-shaped massing. The structures rise uniformly up to a flat parapet capped with individual bulkheads, with only one shallow setback depicted spanning across the towers’ ninth floors along the Willoughby Street- and Flatbush Avenue-facing elevations.

The Jay Group purchased six adjacent lots for $75 million from Pearl Realty Management, forming a 39,000-square-foot assemblage comprised of 104-106 Fleet Place, 159 and 166 Willoughby Street, and 287 Flatbush Avenue Extension. The deal also included $12.5 million of air rights transferred by the nearby 147 Pearl Street. Current zoning allows for the project to span up to 462,000 square feet.

287 Flatbush Avenue Extension. Diagram via NYC DOB.

The nearest subways from the development are the B, Q, and R trains at the DeKalb Avenue station.

287 Flatbush Avenue Extension’s anticipated completion date is slated for summer 2026, as noted on site.

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17 Comments on "Foundations Underway for 450-Unit Project at 287 Flatbush Avenue Extension in Downtown Brooklyn"

  1. Peterinthecity | May 21, 2025 at 8:17 am | Reply

    Brooklyn, meet Tron. Tron, meet Brooklyn.

  2. Christopher J Stephens | May 21, 2025 at 9:16 am | Reply

    Oof. The best thing about that exterior is the blank lot line wall.

  3. why does the rendering have a random black dot in the top right, made me think i had a bug on my screen

  4. The ensemble of this and that newish holdout on the corner is some tragic urban design.

  5. David in Bushwick | May 21, 2025 at 11:23 am | Reply

    I will remain hopeful that this will end up being weird but in an entertaining way.

  6. Love the steampunk wooden water tower on top.

  7. This is 275 Flatbush Avenue Extension, not 287 Flatbush Avenue Extension. I’m not sure that address exists. If you put it into Google Maps it points at that insanely expensive Mobil station that has a monopoly on the area, but it isn’t actually that address.

  8. michael iacono | May 22, 2025 at 8:13 am | Reply

    who is the GC or CM on this job site ?

  9. Andrew Porter | May 23, 2025 at 12:55 pm | Reply

    More and more, downtown Brooklyn (which I live near) is becoming an alien landscape, as the low old buildings are replaced by massive highrise redevelopment. Thank the gods for the Landmarks Preservation Commission, which has mostly prevented this mass defenestration of my neighborhood!

  10. The new construction adding the ugliness to this corner.

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