At its third meeting, held in Karlsruhe, Germany on 17-19 June 2002, the Working Party on Decommissioning and Dismantling (WPDD) held a Topical Session on Buildings & Sites Release and Reuse. Presentations during the topical session covered key aspects of the release of buildings and sites and provided the basis for exchange of information and experience. This document is the proceedings of the topical session.