Brookfield Properties and Park Tower Group are developing the project as part of Greenpoint Landing, a waterfront development master-planned by Park Tower Group.
The stepped residential buildings are designed to look as if a single building has been torn apart and the two halves placed next to each other.
The South Tower has reached its full height of 400 feet (122 metres) and the North Tower topped out at 300 feet (91 metres).
The gap between the two buildings frames views of the Manhattan skyline across the East River.
Both towers are formed of gridded concrete panels inset with square windows that measure eight by eight feet (2.4 metres). The precast concrete panels are angled slightly, to mimic the shingles of nearby townhouses.
A total of 745 residential units will be split between the 40- and 30-storey towers in Greenpoint – a Brooklyn neighbourhood just north of Williamsburg.
Jason Long, a partner at OMA, led the firm's New York office on the Greenpoint Landing project.
"These towers, our first in Brooklyn, have reached an important milestone made possible by the perseverance of Brookfield, Park Tower Group, BBB and the entire construction and design team during an unprecedented time," said Long.
"It's exciting to see our collective efforts take shape on Greenpoint's dynamic skyline."
These housing complexes will be mixed-income, meaning 224 – or 30 per cent – of the units will be offered at affordable prices and the rest at market rate. In New York, affordable is defined as costing around a third of the median income for a family living in the city.
Greenpoint Landing encompasses a plan to develop a 22-acres waterfront site by building 5,500 residential units, along with a school and parks. Of these units, 1,400 will be affordable.
The first Greenpoint Landing building, One Blue Slip, opened in 2018 followed by Two Blue Slip in 2020. Both were designed by New York-based practice Gachot Studios. Four more towers are also under construction.
James Corner Field Operations, the practice that worked on New York's High Line park, is designing the public spaces.
Photography courtesy of Highbury Concrete. Renders courtesy of OMA.
Lead design architect: OMA
Partner-in-charge: Jason Long
Project architects: Yusef Ali Dennis, Christine Yoon
Team: Remy Bertin, Jingyi Bi, Sam Biroscak, Titouan Chapouly, Ken Chongsuwat, Marie-Claude Fares, Yashar Ghasemkhani, Anders Grinde, Wesley LeForce, Chong Ying Pai, Nathan Petty, Andres Rabano, Laylee Salek, Alan Song, Wo Hong Wu, Soojung Yoo, Steven Young, Juan Pablo Zepeda
Executive architect and unit interior designer: Beyer Blinder Belle Architects & Planners
Waterfront landscape architect: James Corner Field Operations
Interior and landscape architect: Marmol Radziner
Unit interior designer: Beyer Blinder Belle Architects & Planners
Structure: DeSimone Consulting Engineers
MEP and LEED: Cosentini Associates
Facade: Thornton Tomasetti
Lighting: Focus Lighting
Acoustics: Cerami Associates
Civil: Langan Engineering
Wayfinding and signage: MTWTF
Marine engineering: McLaren Engineering Group