Traditionally, land is common, and a family gets the ok from the community to occupy a certain amount of land for family use. That land is passed on from father to son, providing the son stays on the land and works it. However, the son is fully within his rights to give a loan of the land to his sister or so, and go and work somewhere else. So, the land stays within the family, and is divided up between them when somebody passes away. In true Greek style, nothing is written down, no contracts, no money changes hands (officially anyway) and nobody indeed knows anything. And the big boys come in with contracts and rules and regulations. The Greek will take the money, but the contracts, rules and regulations mean nothing to him. He is not a crook, they literally do mean nothing to him and he will put up a fight if anybody tries to implement rules and regulations. A law lecturer in the university of Athens once told me that every single law in the Greek legislature can be applied on totally opposite situations and fully legalise both situations. And then the rest of Europe wonders why this place is chaos? It isn't to us, just don't try to get your heads around the way things work here.
Unless in government, no Greek will do another Greek, that is the unspoken law. No Greek will do anybody, providing whoever anybody is behaves, lives and works with the community on the terms of the community. Try and impose terms, and you are looking for a world of long term hassle. That is the main reason why every attempt to regulate this place fails miserably.