The tree-shaded backyard is entertainment-ready with a pool and spa, plus a built-in barbecue.Simon Berlyn
The Toxic crooner, who sold a Calabasas estate in 2023 for around $10 million, still maintains her longtime Italianate-inspired mansion in the unincorporated Hidden Valley region near Thousand Oaks that she bought back in late 2015 for $7.4 million.