Across California and beyond, the housing crisis is no longer abstract, it’s personal. Families are doing everything they can to support aging parents nearby, help adult children priced out of rent or buying their homes, stay financially stable, and ensure seniors can age in place without isolation.

In backyards from Monterey to Sonoma, a new solution has emerged — the Accessory Dwelling Unit (ADU).

These small but fully independent homes are transforming the way Californians think about family, finances, and the future. With just a few hun- dred square feet, an ADU can create a safe place for a parent, an affordable launchpad for a young adult, or a reliable stream of rental income that eases mortgage pressure.

To understand how this movement is reshaping neighborhoods — and what actually happens behind the scenes — I sat down with William Anderson, Project Manager at Perpetual Homes, the state’s largest private ADU builder.

When asked how homeowners typically arrive at the decision to build an ADU, Anderson didn’t hesitate. “In almost every case, it starts with wanting to help someone — a parent, a child, a grandchild, or even themselves,” he said. “People don’t come to us because they want more square footage. They come to us because they want housing options.”