Not only in Turkey but also in any country before you invest some money and buy any kind of property you must research every detail. It is important to negotiate with the owner of property, make an agreement, open a bank account and register your name to that property in land registry. 

          It is not easy to control everything so better to work with a lawyer who knows these issues. When you give POA (power of attorney) your Turkish lawyer represents you depending on which authorities you gave. While they represent you, they can not maliciously do anything bad for you as it will jeopardize their occupation. You will be safe and secure by a person who knows related things on this issue.

         Each country has right to place restrictions on non-citizens who want to buy properties, as it is placed in Turkey. Before buying a property it must be the first thing that you searched whether you are eligible for buying it or not. After that you must control the property whether it is the one you aim to buy and legally built. Finally you will make an agreement and buy apartment so that you can secure your rights.