In December 2016, BIG unveiled the first images of a concrete superstructure for Los Angeles' Arts District. The project, a mixed-use complex called 670 Mesquit, was originally projected to cover 2.6 million square feet (242,000 square meters) and include office space, residential units, and two hotels, marking BIG's first project in Los Angeles. In July 2025, nearly nine years after the original proposal, the Los Angeles City Council approved the project to be eventually built in multiple phases.
