In 2016, Gwyneth Paltrow bought 2.4 acres in Montecito for $4.9 million and rebuilt from scratch; 6 years later, her 14,000-square-foot solar-powered home used graywater system

Gwyneth Paltrow built a large estate in Montecito during a severe California drought. Her new home incorporated solar panels and a graywater system for water conservation. This construction project took six years to complete and cost millions of dollars. Such sustainable features are becoming more common in wealthy coastal communities. High-profile builds help normalize these technologies for broader adoption by homeowners.