This study consists of five parts: Methodology, Thesaurus, History of Dilbeek, Application of method on the case of Dilbeek and Appendix. The methodology handles the selection criteria, valuation, typology and demarcation of the heritage compositions. These aspects are described in relation to heritage policy. They are illustrated with examples from the case study of Dilbeek. The thesaurus proposes different types of heritage compositions, related to different levels of scale.