The Apprentice house is in Highgate and Hampstead Heath where luxury properties are known to raise over £40m, while the eight bedroom Xfactor house is 30 miles away in Hertfordshire’s Hadley Wood.
The prize for winning the Apprentice is £250,000, less than the cost of renting out the property for the duration of the series, as it costs around £15,000 per week.
Russell Quirk, chief executive officer of eMoov.co.uk, said: “Simon Cowell is likely to the win the battle of the TV ego’s and viewing figures, but in property terms, Lord Sugar is streets ahead.
“With a quarter of a million pound up for grabs and the backing from one of the most successful entrepreneurs in the country, the luxury mansion lifestyle might soon be a reality for the winner of Apprentice 2014. “
Previous properties used for the show include two £11m mansions on Lincoln’s Inn Field in Holborn and London’s Baywater, while the 2011 Richmond house was worth £7m.
Sir Alan Sugar returned for a new series double bill this week.