Sixteen-year-old Oliver Grajewski of Pittsburg, center, uses a cordless drill to help build five childrenÕs playhouses at the Walnut Creek Kaiser campus, Saturday, May 3, 2025 in Walnut Creek. Affordable housing continues to be one of the most challenging issues facing Bay Area residents, so in addition to contributing $400,000 to build the 42-unit affordable housing community Esperanza Place in Walnut Creek, Kaiser Permanente has built 5 childrenÕs playhouses on the Walnut Creek Medical Center Campus. These playhouses will be donated to families in need at A ChildÕs Place Daycare in Antioch, We Care Children in Concord, and the Boys and Girls Club, according to a Kaiser press release. (D. Ross Cameron for the Bay Area News Group)

HGTV on-air personality Rachel Taylor, right, gives a helping hand to volunteers Michael Wright and Manjeet Wheat during Saturday’s building get-together project.

Former Golden State Warriors forward Adonal Foyle greets fan Erica Williamson of We Care Services for Children at Saturday’s event.

Habitat for Humanity volunteers and Kaiser Permanente employees work together to build five childrenÕs playhouses at the Walnut Creek Kaiser campus, Saturday, May 3, 2025 in Walnut Creek. (D. Ross Cameron for the Bay Area News Group)