Most buildings aiming to create an indoor air quality policy focus on operational efficiencies like preventing stuffiness or adjusting temperatures but the best place to start with an IAQ policy is to consider all factors, both outdoor and indoor environments. This includes outdoor climate, the age of the building, the design and operational practices, the patterns of occupants, energy performance and all building systems as well as the technologies used. Add to these some other actionable strategies like contaminant source control, occupant awareness, and health and safety legislation.