Casa de Viñas is a renowned 20-acre vineyard in the Livermore Valley, located at 7565 Tesla Rd, owned and meticulously farmed by industry veteran Julio Covarrubias. Known for producing high-quality fruit, this vineyard supplies premium grapes for Cabernet Sauvignon, Cabernet Franc, Merlot, and Malbec to acclaimed local wineries like Steven Kent Winery, Mitchell Katz Winery, and Rosa Fierro Cellars.