Lucy Guo, the world’s youngest self-made woman billionaire, has turned heads by purchasing a $30 million mansion in Los Angeles. The tech mogul’s major real estate move underscores her continued rise in influence and wealth.

Residents of a luxury condominium on New York City’s Billionaires’ Row are accusing developers of concealing dangerous defects within the building. Lawsuits have been filed against Macklowe and CIM Group as owners report structural flaws and safety concerns.

The Fisher Island home of Russian real estate billionaire Dmitry Zelenov, who died under unusual circumstances in France, has sold for $14.82 million. The sale marks the end of an era for the luxurious property amid ongoing legal battles over his estate.