A sustainability audit of Holme Lacy College is described. The approach adopted a "triple bottom line" assessment, comprising a number of key steps: a scoping review utilising a revised Royal Institution of Chartered Surveyors project appraisal tool; an environmental impact assessment based on ecological footprinting and a social and economic impact assessment. The college has a number of unsustainable features. Its ecological footprint is equivalent to 296 ha and some 866 tonnes of CO [subscript 2] were emitted from the site over a one-year period. The social impact of the college and its staff is significant over a wide range of stakeholders and the region. The economic impact indicates that the college contributes up to 5.3 million British Pounds to the local and regional economy. (Contains 6 tables and 4 figures.)