About of property was later purchased from McLean, just before his death, by the University of Toronto for about $650,000 in 1963, as part of the university's regional expansion. The groundskeeper of the land would continue to reside in the Highland Creek valley for the next 29 years. McLean's additions to the Miller Lash House, which would eventually become the residence of the campus's principal, were modernized and of surrounding land north of the estate were also acquired. The University of Toronto established the Scarborough College as part of the institution's collegiate university system and declared the campus as a branch of the Faculty of Arts and Science. D. C. Williams was appointed as the principal of Scarborough College and the planned Erindale College, as well as vice-president of the university. The college's faculty, consisting of 16 members, was also established and headquartered at the main campus in Downtown Toronto. First classes were held at Birchmount Park Collegiate Institute and Old Biology Building at the St. George campus. Designed by John Andrews, the first building of the campus began construction the following year. Due to delays in construction after a strike among workers, the Scarborough College opened in temporary classes at the main campus to 191 full-time students in 1965. The first building was completed in time for the following academic year.