4S Ranch/Del Sur/Santaluz
Black Mountain Ranch is a suburban community in the northeastern part of the city of San Diego, California. Black Mountain Ranch encompasses 5,100 acres (21 km2) and is located north of Rancho Peñasquitosand Torrey Highlands, south of the Santa Fe Valley, east of Fairbanks Ranch and Rancho Santa Fe, and west of 4S Ranch.
The development of Black Mountain Ranch took over 17 years to complete and was led by Fred Maas, a local San Diego businessman with a background in politics and sustainable building practices.
Black Mountain Ranch primarily consists of two separate housing developments known as Santaluz and Del Sur. Santaluz is the area in the southern half of Black Mountain Ranch while Del Sur comprises the northern half.
Primary access to the community is via Camino Del Sur (from State Highway 56 via Interstate 5), Carmel Valley Road, San Dieguito Road (from Rancho Santa Fe) and Camino Del Norte (from Interstate 15).