California's Multigenerational Living Trend Spurs ADU Boom
In California, the trend of multigenerational living is driving a significant increase in the construction and sale of accessory dwelling units (ADUs). According to a report by Realtor.com, over 6% of active property listings in 2025 were designed for multigenerational families, featuring terms like 'granny flat' and 'in-law suite.' This shift is largely attributed to rising housing and childcare costs, prompting families to cohabit. The report highlights that nearly 4 million owner-occupied households in the U.S. are multigenerational, with California cities like Los Angeles and San Diego leading in such listings. These properties, while priced at a premium, are in high demand, reflecting a broader trend towards co-living arrangements. 
