Katty Perry is a judge on American Idol. Monica Schipper/Getty ImagesSinger Katy Perry won a $15M mansion in Montecito after a three-year legal battle.The previous owner, Carl Westcott, claimed mental incapacity from Huntington's disease post-sale.Perry seeks damages for rental losses and repair delays.After a three-year legal battle, pop star Katy Perry is now the official owner of a $15 million mansion in the celebrity enclave of Montecito, California, that previously belonged to entrepreneur and disabled veteran Carl Westcott.The singer officially acquired the property on Friday, May 17, through her LLC, DDoveB — a tribute to her daughter, Daisy Dove Bloom — according to property records seen by The Wall Street Journal.In July 2020, Perry, 39, bought the two-acre estate and eight-bedroom house from Westcott, 85.