Southern California homeowners build ADUs for various reasons. Whether you’re considering housing family members or seeking additional income, ADUs offer flexible solutions that enhance your property’s functionality and value. Notably, a 2021 survey by Generations United found that 26% of Americans live in multigenerational households, up from 7% in 2011, indicating a growing trend toward such living arrangements. ADUs provide a practical means to accommodate this shift, offering independent yet connected living spaces for aging parents or extended family members.