A dramatic 450% rent increase at Carnegie House in Manhattan was upheld by the New York County Supreme Court this week.

A rare spot of affordability on Manhattan’s ultra-luxury Billionaires’ Row is officially going the way of the dinosaurs.

The Oracle chairman had remodeled the Pacific Heights house, which looks out at the Golden Gate Bridge and San Francisco Bay.

From sprawling terraced gardens and manicured lawns on massive estates to interiors filled with the most luxurious materials — think imported Italian marble — billionaires’ homes naturally inspire ...

At a time when high asking prices and mortgage rates have made homebuying more challenging than ever, one distinct market sector is still selling like hotcakes: megamansions that only the ultrawealthy ...

Why billionaires and luxury travelers choose Newport, Rhode Island: Inside the mansions, private clubs, real estate and social circles that define America’s original 1%.