Robbie Williams Interested in Michael Jackson's Death House?

Our spies saw Robbie roll up to the house Thursday afternoon in his Range Rover. The house was just listed -- again -- this time the asking price is $23.9 million.

We know anyone who looks at the estate has to pre-qualify ...meaning they have to show they can afford the steep purchase price.

As for Robbie, a London newspaper estimates his 2011 net worth at $149 mil. Robbie currently owns a home in the Beverly Hills area -- he paid $16 mil back in 2008. And he bought a house down the street and uses the land as a soccer field. Now that's rich.

As for the Holmby Hills estate -- Michael was renting it from Hubert Guez, the CFO of Ed Hardy. The house is 17,000 square feet, with 7 bedrooms and 13 bathrooms.