This report describes the development of a standard questionnaire for use in investigating sick building syndrome (SBS) in specific cases and in research projects. The questionnaire itself is packaged with the report. It is intended to be used for screening surveys to determine the prevalence of SBS in a particular building. It may be necessary to adapt the questionnaire if it is going to be used for a specific research project or to gather data on particular potential causes of SBS. The focus has been on achieving standardisation within the United Kingdom.