Dublin, who recently took part in Celebrity MasterChef as a contestant, has been presenting Homes Under The Hammer since 2015.
His new firm’s first auction is set to take place next month.
Dublin told the press: “I am launching my own auction house, Lot 9, with the first auction on October 28 at Hotel Football in Manchester.
“I’ve been into property since 1992 and this is a business I’ve wanted to do for a long time.
“My main work is for the BBC and BBC Radio but this is a passion project between business partners and we’ve decided to go for it.”