Grass Valley is located off Huebner Road near Evers Road near Leon Valley. Displayed below are homes for sale in Grass Valley, a neighborhood in Leon Valley near San Antonio, TX 78238 served by the Northside ISD. Schedule a showing from the detail page of each of these Grass Valley real estate listings in Northwest San Antonio, and more. Receive email alerts whenever new Grass Valley homes hit the market that match your specific search criteria.