The NYTimes has an excellent piece on Greece’s broken property system:
In this age of satellite imagery, digital records and the instantaneous exchange of information, most of Greece’s land transaction records are still handwritten in ledgers, logged in by last names. No lot numbers. No clarity on boundaries or zoning. No obvious way to tell whether two people, or 10, have registered ownership of the same property.
As Greece tries to claw its way out of an economic crisis of historic proportions, one that has left 60 percent of young people without jobs, many experts cite the lack of a proper land registry as one of the biggest impediments to progress. It scares off foreign investors; makes it hard for the state to privatize its assets, as it has promised to do in exchange for bailout money; and makes it virtually impossible to collect property taxes.
… less than 7 percent of the country has been properly mapped, officials say. Experts say that even the Balkan states, recovering from years of Communism and civil war, are far ahead of Greece when it comes to land registries attached to zoning maps — an approach developed by the Romans and in wide use in much of the developed world since the 1800s.