The 'Bodies' singer was spotted entering the property in his Range Rover on Thursday (March 22), reports TMZ.
The Holmby Hills estate in Los Angeles is listed at $23.9 million. Jackson was renting the house from Ed Hardy CFO Hubert Guez at the time of his death in 2009.
The property is 17,000 square feet, containing seven bedrooms and 13 bathrooms.
Robbie Williams currently owns a Beverly Hills property, which he paid $16 million for back in 2008.
The Take That singer had previously hinted that his track 'Morning Sun' was dedicated to Michael Jackson, but he later revealed that it was actually about himself. He also mentions the late singer briefly in his hit 'Rudebox'.
Williams will front Soccer Aid 2012 when it returns on Sunday, May 27 at Old Trafford, Manchester.
Watch Robbie Williams talk about Michael Jackson below: