Construction and Demolition Wastes (CDWs) constitute a waste fraction, which is quantitatively at least as high as municipal solid waste in Greece and other countries. This paper presents the current situation on CDW management in Greece and focuses on the results from the operation of a pilot processing plant. CDW was collected from construction crews at several demolition sites, which included: the demolition of old residential buildings damaged due to an earthquake in September 1999 in Northwest Attica; the construction of 1000 new residential buildings. The operation of the plant is described and an analysis of its operation is provided.