By the late 1950's NHH had outgrown its original premises and work began on developing a new campus for NHH at Breiviken, just outside the city centre. In 1963 the school moved to the new campus, an event which in many ways marked the transition to a new period which was characterised by a rapid increase in the number of students as well as teachers. The new campus provided a huge increase in capacity and the annual intake of students increased from 60 to over 200. In total there were now 304 students and 67 staff.

An important feature of this period was the growth and development of the faculty. The new facilities made it possible to employ many new, talented people and the importance of research as well as teaching was strengthened. Many successful graduates went to the US to study for doctorates and came back to NHH with international experience and a more research based focus. Many faculty members took advantage of sabbaticals to study and continue their research overseas, many textbooks were published and the volume of publications in international journals increased significantly. A driving force behind this expansion and internationalisation of research was Professor Karl Borch.
Foreningnen for NHH i Bergen helped facilitate this boom in research with significant contributions to the costs involved in attending conferences and seminars and in taking overseas sabbaticals. It was during this time that Professor Jan Mossin's seminal paper Equilibrium in a Capital Asset Market was published in Econometrica, contributing significantly to the development of the Capital Asset Pricing Model (CAPM), and that Nobel laureate Finn E. Kydland went from NHH to Carnegie Mellom in the US to study for his doctorate. Most of the US educated doctorial graduates came back to NHH to teach and continue their research, but some stayed in the US and a few (like Kydland) returned to NHH only to later go back to the US to continue their work.

As the faculty grew and developed so did the academic offerings, with several advanced level courses established. In 1963 the name of the Handelsdiplom degree was changed to Siviløkonom, with graduate receiving the same title. A master level programme, Høyere avdelingstudium (HAS), was introduced in 1972 as a preparation for Siviløkonom students wishing to continue on to doctorial studies; and in 1973 Professor Dag Coward established a master level programme for students wishing to specialise in auditing, accounting and the financial management of firms, the Høyere revisorstudium (HRS). The HRS degree also provides graduates with official qualification to work as an auditor in Norway. In 1975 the Siviløkonom degree course was extended to a four-year programme. NHHK also expanded its offerings with evening courses introduced in 1963.
As well as continuing to develop the education programmes offered to students, research has remained a central part of NHH. In 1973 Senter for anvedt forskning (SAF - Centre for Applied Research) was established and in 1975 Industriøkonomisk institutt (IØI - Institute of Industrial Economics, subsequently the Institute of Business Economics) was established as a research unit under the Ministry of Industry.

The 1960's and 1970's were an active time for NHHS. As with much of the western world, politics became an important part of student life at NHH, but the students also continued their focus on social and networking activities. The new premises provided much more space for the development of student activities, with many new groups being established and the new Klubben in the basement becoming the social hub for student life. In 1963 one of the distinctive features of today's NHHS was established, the brass band Direksjonsmusikken.
The on-campus Hatleberg student accommodation opened in 1964, making it much more convenient for students to live, work and socialise together on campus and strengthening the sense of community amongst NHH students. By 1973 the number of students had increased to 945, with 174 members of staff. NHH was already beginning to expand beyond the new building by 1975, and NHH started to take over space in the Merino building, a disused building next to the campus.
Continue on to 1980-2000: Specialisation and international expansion.