When you buy properties valued above 250.000 USD, you apply to (Tapu Office) General Directorate of Land Registry and Cadastre, you demand to obtain Turkish Citizenship. After the application, they check the appraisal report and bank transfer documents. Tapu Office gives approval for citizenship in between 3 and 7 days time. With this citizenship approval, it is possible apply to the Immigration Office desk on the same day without waiting for an appointment for a contemporary residence permit. With the approval and residence permit, it is possible apply finally to General Directorate of Population and Citizenship on the same day. After tapu application, all process is followed in a special Citizenship Information Office in Istanbul and Ankara. They finalize citizenship acquisition within 30 days.
It takes time within 30 days. The government has opened a special Citizenship office to reduce time.