Tech entrepreneur's Sonoma ranch sells for record $38.5m

A 1,100-acre estate on Sonoma Mountain has sold for $38.5 million, marking a record price for the region. Entrepreneurs Mark and Debra Leslie transformed the undeveloped land into a self-sustaining retreat, investing $33 million in environmental restoration and farming infrastructure. The property features a contemporary main residence with sweeping views, reflecting rising demand for secluded, off-grid homes in coastal California. The sale underscores growing interest in luxury sustainable properties.