On November 4, HACSB and its partners celebrated another milestone in the transformation of the Arrowhead Grove community: the groundbreaking of Alder Square, the fourth phase of redevelopment at the site. Previous phases of redevelopment added 322 new homes to the community, replacing 252 original 1940’s Public Housing units beginning in 2016. Alder Square will add 92 new apartment homes, including 14 mobility-accessible and 10 hearing-accessible units, and an on-site manager’s unit, for individuals and families earning between 30% and 80% of the area median income. Like previous phases, Alder Square is developed in partnership with its development partner, National CORE. HACSB’s Executive Director, Maria Razo, is proud of the enduring partnership between the Housing Authority and National CORE. “Our partnership has grown into a truly collaborative relationship, and we are united by our shared commitment to create high-quality affordable housing and thriving communities for the residents we serve. Together, we’re proving that affordable housing can be transformative,” Razo said.
HACSB would like to thank the many partners who have supported this project, including National CORE, San Bernardino County, the City of San Bernardino, the U.S. Department of Housing and Urban Development, Congressman Pete Aguilar, the California Department of Housing and Community Development, the California Strategic Growth Council, the California Community Reinvestment Corporation, Hudson Housing Capital, California Climate Investments, and Capital One.
Construction of Alder Square is expected to finish in late 2027.

Groundbreaking ceremonies for Alder Square. Photos by Davis Barber/Video Services, for HACSB. November 4, 2025.