Diamond Hills Financial Address: 2020 S Brea Canyon Rd, Diamond Bar, CA 91765 Phone: (909) 612-8170 Hours: Mon: 8am-5pm Tue: 8am-5pm Wed: 8am-5pm Thu: 8am-5pm Fri: 8am-5pm Loans, Financial Advisory Services Other Businesses: Diamond Hills Financial at 21015 Pathfinder Rd, Diamond Bar, CA 91765