I know of one law firm in the UK (obviously more) who dealt with the estate in UK (UK Will) and property in Turkey, this person did not have a Turkish Will, the house was sold and monies went to the probate account in the UK for the executors to deal with. The estate is then actioned according to the Last Will and Testament of the UK.
The UK firm with furnish the Turkish Embassy with all relevant papers ratified from the UK. It is however, still a lengthy procedure.
I will search for the law firm details and ask them if I am allowed to post.