Mr. Andreas Psathas is a PhD Candidate at the School of Architecture of the National Technical University of Athens. He holds a Diploma in Rural and Surveying Engineering (N.T.U.A.) and is a member of the Registry of Certified Valuers of the Ministry of Economics. Since 2004 he has participated in several scientific unions and committees and has been a member of the Assembly Presidium of Technical Chamber of Greece (2013), and of the Scientific Committee of Expert Witnesses and Real Estate Valuers (2015). He worked at the Trans Adriatic Pipeline (TAP), from 2014 until 2015, as Land Easement and Acquisition Manager, for EON Technologies. From August 2007 until August 2013 he was a member of the Body of Sworn-in Valuers of Greece, and he participated as an expert, in the major road concession projects, in other co-financed projects and in the estimation of the property of several Real Estate Investment Companies. He has also worked as a self-employed engineer and as an associate in many technical offices, contributing to several studies.