After World War II, the Academy expanded its offerings, adding a tertiary department in 1947 and transitioning to a 4-year collegiate program.

In 1961, the institution was renamed Holy Angel College (HAC), under the leadership of Don Juan D. Nepomuceno.

The university's growth continued, with expansions in both physical infrastructure and academic offerings, including graduate programs and technical courses.

HAU gained numerous accreditations and recognitions over the years, including the prestigious Philippine Quality Award (PQA), international accreditations from the International Assembly Council for Business Education (IACBE) and the Accreditation Commission for Programs in Hospitality Administration (ACPHA), and multiple certifications from the ASEAN University Network Quality Assurance (AUN-QA) for several programs, including BS Psychology, Criminology, Architecture, and Information Technology.

On March 21-22, 2024, CKS spearheaded the First International Conference on Kapampangan Cuisine and Food Tourism at HAU.

'The future of Kapampangan food is bright,' said chef Jam Melchor, Philippine Culinary Heritage Movement founder.