Founded in the 1970s in Sonoma County, Chateau St. Jean became one of California’s pioneering wineries for vineyard-designated and appellation-focused Cabernet Sauvignon. The winery built its reputation by sourcing fruit from diverse sites across the state, blending coastal influence, inland warmth, and varied soil types to craft balanced and approachable expressions of California Cabernet. Known for a polished yet restrained style, Chateau St. Jean emphasized structure and regional character at a time when California Cabernet was gaining international recognition.