Although many people have been forced to work remotely due to the pandemic, occupancy patterns in office buildings were already rapidly changing due to technological advances, enabling workers to work remotely or "telework". While having more workers telework could potentially lower an organization's need for real estate and associated costs, this style of work is not implemented in the most efficient way since many buildings still consume significant amounts of energy even if occupancy is low. Additionally, spaces are acquired assuming maximum occupancy, and cleaning and maintenance schedules do not change with respect to occupancy level, therefore wasting resources. Most services provided -from ventilation to cleaning and space -are (or should be) a function of occupancy. Yet occupancy is seldom measured in a comprehensive way such that the data can be widely used to improve building operations. There is a wide variety of applications I wish to thank members of the Building Performance Research Centre for projecting an essence of comradery and community through regular virtual seminars, discussions, and events; I am thankful to be part of such a tight-knit, diverse, and knowledgeable group.