The nature of the work to be performed in an office space will inform the fitout layout and design. For example, different fitouts are needed for a general administrative area compared to a call centre or customer service centre.
Work practices that are flexible will affect how much space is needed, as well as the functionality of those spaces. If people do not need an allocated desk for the full spread of office hours, the number of desks can reduce and be replaced by fitout that supports other functions, such as collaboration.
The nature of work and work practices are organisational matters to be established by agencies in the planning stage of a project as part of their service delivery and human resource strategies.