Increased levels of personal technology have made some types of work much more mobile than ever before. This creates a potential dichotomy between mobile, flexible personal workspace and static, inflexible, inelastic workplaces. As occupiers of property struggle to balance demand with the efficiency of workplaces, it becomes even more important to take stock of the suitability of the workplace in a planned and formal way. The viability of any given workspace is determined by a range of different factors over the life of a particular occupation. External factors include: ï The relationships with stakeholder groups; ï Economic and market cycles ñ current and forecast; ï Legislative, social, technological and environmental contexts. // Internal factors will include: ï Planned changes in the occupiers business; ï The operational cost base of the workspace; ï The current and future carbon profile. // The impact of these variables may be determined through a holistic appraisal that takes into account both internal and external factors. This paper: ï Proposes a detailed taxonomy for workspace; ï Identifies and quantifies the key variables that impact the operational performance of workspace in the context of the workplace; ï Defines a conceptual model for workspace and workplace appraisal.