Pantelis Theodore Papakonstantinou was born in 1948 in Pagrati. His mother was a refugee, originating from Antalya, Anatolia (Mikra Asia) and his father was a second generation Athenian, originating from mountainous Roeino Arcadias. He studied in the 3rd Primary school of Pagrati, known as “Dragatsi”, and completed his secondary and high school studies in the 1st Secondary and High school of Aigaleo. In 1966 he enters the School of Civil Engineering of the National Technical University of Athens in terms of a scholarship and graduates in 1971. He served in the Navy as reserve officer from 1971 to 1974, and, after his service time was over, he worked for about two years in big engineering companies, gaining valuable experience in important projects. In the meanwhile, he starts his own business. His office deals with private projects and designs of public projects too. In 1979, he was elected Municipal Councilor of Aigaleo Municipality and in 1982, President of the Municipal Executive Board. From 1982 to 1987, he serves as member of the Management Board of Emporiki Bank’s affiliate of “Greek Company of General Operations”, which managed the shipyard of Perama (formerly owned by Andreadis). From 1983 to 1987, he works as consultant for the Local Union of Municipalities and Regions of Attica on the project “Operation for Urban Reconstruction“ which was introduced by the late Antonis Tritsis. From 1987 to 1989, he works as consultant for the Prefect of West Attica, concerning urban designing issues. From 1995 to 2008, he is an independent contractor of Emporiki Bank, focusing on commercial value assessments and evaluations of any properties. He is married to Eleni and has 3 children: Despoina, Katerina and Theodore.