Different types of ''title'' in Turkey?
There are various types of "title" in Turkey, some of which give you only the right to occupy land or transitional/provisional rights, rather than full ownership.
'Cooperative developments' might only give you ownership of the stones and concrete from which the building is constructed, without conferring any right to live in the property or an independent legal title! In many cases, whilst they look temptingly cheap, they are beset by legal problems and difficult to register in your name with full title.
There are many areas - some in the most unlikely places - designated 'military zones', where foreigners cannot own property as private individuals. If you buy a plot of land which is designated as an archaeological site (sit alan) the Museum Service can freeze all activity on the land until it has been thoroughly investigated. You cannot even cut the grass, let alone build. Similar restrictions apply to historic buildings.
Do not be alarmed! It is perfectly possible to buy a property with good title and no legal problems. You just need to be particularly careful and get good legal advice before you commit yourself to a purchase.