The pro-Kurdish Peoples' Democratic Party (HDP) will also announce its candidate on Friday, its co-leader Sezai Temelli said, with its ex-chief Selahattin Demirtas in the frame despite being in jail since November 2016. "Our candidate is the people's candidate, our candidate is a man of the people", Yildirim said, as he named Erdogan.
Ince said Erdogan's new presidential palace, which opened in 2014 to sneers from the opposition, should be handed over to the youth and made a "home for science".
The AK Party and MHP are allied for the June 24 presidential and parliamentary elections.
Last month, Erdoğan moved up the presidential and parliamentary elections to more than a year early.
After the elections, a new presidential system agreed in an April 2017 referendum which critics claim gives the head of state authoritarian powers will come into force.