Charlie Sheen bought a mansion for Brooke Mueller in the same neighbourhood as Denise Richards.

The 'Anger Management' star reportedly purchased the Beverly Hills home for the mother of his four-year-old twins Max and Bob - and he had already bought a house for Denise, with whom he has daughters Sam, nine, and eight-year-old Lola.

An insider told ''Brooke insisted that Charlie buy her a house in Mulholland Estates too ... She said it wasn't fair that Denise got a house and she didn't.''

Charlie's second wife Denise was granted custody of Max and Bob, from his marriage to Brooke, and his third ex-wife - who is going through rehab after being placed on an involuntary psych hold earlier this year - is said to be delighted at her new home.

The source added: ''After Brooke and Charlie divorced, it was always her goal to get another house in Mulholland Estates.

''She loved living there when she was married to Charlie, because it offers privacy and tons of celeb neighbors, including Paris Hilton and guitarist Slash.

''She couldn't afford to buy a house there on her own and wouldn't have been able to move back into the neighborhood if Charlie hadn't stepped up.''