143 Acres. Seven Buildable 20-Acre Lots. Last Of Its Kind In The Santa Ynez Valley. Zaca preserve is an untouched, pristine parcel of rolling oak woodlands and grasslands, the only approved and potential ranchette style subdivision located in the Santa Ynez Valley Wine Country of Santa Barbara County, totaling 143 acres and including up to 7 (seven) 20 acre estate ranchette lots.