The 68,000-square-foot building will include 172 replacement recovery housing beds, 44 new treatment beds and 84 new recovery housing beds. Crews aim to complete construction in late 2028.

The groundbreaking marks a tangible step in the city's broader effort to expand treatment capacity and recovery housing as San Francisco continues to grapple with overdose deaths and a persistent shortage of beds for people seeking care. The project replaces existing recovery housing beds while adding new treatment and housing capacity on the island, which has been the focus of a long-term redevelopment effort.

City leaders have framed the investment as part of a larger strategy to address addiction through expanded treatment infrastructure. Details on the project's cost and funding sources were not immediately available.

The new facility is expected to significantly increase the number of beds available for people in recovery and those needing treatment, though the full complement will not come online until the project is finished. Until then, the city's existing recovery housing and treatment system will continue to operate at current capacity.

The groundbreaking comes as San Francisco and other Bay Area counties work to build out behavioral health infrastructure amid heightened public attention to addiction and overdose prevention. The Treasure Island site is one of several projects aimed at expanding the region's treatment and recovery options.