FILE - This Aug. 18, 2016, file photo shows Banning Ranch, including what remains of an oil-extraction operation, on what is believed to be the biggest piece of privately-owned vacant land on Southern California's coast in Newport Beach, Calif. California's Supreme Court ruled on Thursday, March 30, 2017, that an upscale coastal city failed to adequately consider the environmental impacts of a plan to build homes on a large swath of land overlooking the Pacific Ocean. The court found that the city of Newport Beach should have considered environmentally sensitive habitat areas when drafting a review of a hotly-contested proposal to develop the 401-acre parcel known as Banning Ranch. (AP Photo/Nick Ut, File)