Mr Erdogan has been labelled a ‘sultan’ for using the palace, which is twice the size of French palace Versailles.
“The so-called sultan has built this for himself in a country where three million people are without work,” the leader of the opposition Republican People’s Party Kemel Kilicdaroglu told The Telegraph.
The palace spans more than 289,000 square metres and is larger than the previous Guinness World Record holder, the home of the Sultan of Brunei.
The extravagant presidential compound was constructed in a national park in breach of court orders, further angering opposition and environmental groups.
As well as building the new palace Mr Erdogan also splashed out on a private bespoke Airbus at a cost of more than $200 million.
Mr Erdogan has been unapologetic about the hefty palace price tag, which Turkey’s Finance Minister confirmed cost $711 million to build, more than double the number originally quoted.
“No one can prevent the completion of this building. If they are powerful enough, let them come and demolish it,” he told a meeting of the ruling AK Party in March.