Distributing approximately $66.3 million across three decades of targeted grantmaking, the Benbough Foundation at 2550 Fifth Ave in Hillcrest operated from 1985 through a planned spend-down completed in 2021. The foundation channeled grants toward education through organizations like San Diego Education Fund, while also investing in Balboa Park cultural institutions and UCSD research initiatives. Three focus areas guided every allocation: economic opportunity through research funding, cultural enrichment through Balboa Park partnerships, and health and welfare programming for the Diamond Neighborhoods in southeastern San Diego. Civic infrastructure along the Uptown District corridor reflected the foundation's commitment to strengthening the communities surrounding its Hillcrest headquarters. The foundation's final dispositive grants established permanent endowments at grantee organizations designed to sustain program impact beyond its planned sunset.