Brookshire vineyard is located at Brookshire ranch, a 565-acre property of wild oaks, native grasses, and habitat for area wildlife. The northernmost vineyard blocks are made up of Los Robles clay loam with gravelly, very deep, and well-drained soils formed in material weathered from basaltic and andesitic rock. The southern blocks rest on soils of red hill clay loam series of 37-50% gravel, intermixed with tuff particles and fractured rhyolite. Julien selected four blocks from which to make Brandon Gregory red wines. The remainder of the fruit grown at Brookshire vineyard is sold to wineries in the Napa and Sonoma wine regions.

Helena Vista Vineyard sits on the 621-acre helena vista ranch, the majority of which is native and undeveloped. Land preparation for a 22-acre vineyard began in 2021, and a planting of cabernet sauvignon, cabernet franc, petit verdot, and syrah followed in 2022.

The western vineyard blocks are made up of the suther-laughlin loam series, a mixed series of topsoil sitting on weathered sandstone and typically found in the knights valley hillsides. East vineyard blocks are planted on a gravelly alluvial fan made up of the cortina loam series.

The Brandon Gregory Estate portfolio will include future wines produced from select blocks of the Helena Vista Vineyard.