Efficient use of resources, including space, is critical in academic departments. Traditional space auditing simply assesses occupancy levels. We present a novel approach which assesses not just the extent to which space is used, but also how well it is used. We link space use quantitatively to key performance indicators in a research-intensive university department. A clear picture of how well each room is being used to meet a range of performance goals is obtained. Performance criteria are developed based on the survey data distributions and benchmarked against performance expectations. These criteria are applied to analyse the survey data, readily identifying underperforming space. This provides management, through a transparent process, with evidence-based information with which to facilitate change management to improve performance. (Contains 2 tables and 4 figures.)