Del Sur

Del Sur/Black Mountain Ranch is a suburban community in the northern part of the city of San Diego, California. Black Mountain Ranch encompasses 5,100 acres and is located north of Rancho Peñasquitos and 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 Interstates 5 or 15), Carmel Valley Road, San Dieguito Road (from Rancho Santa Fe) and Camino Del Norte (from Interstate 15). There is a city park, South Village Neighborhood Park, near Willow Grove Elementary School off Camino del Sur. There is also the Black Mountain Ranch Open Space Park off Carmel Valley Road, east of Camino del Sur. The area is served by Poway Unified School District (PUSD) and includes Del Sur Elementary School (opened 2008), Willow Grove Elementary and Del Norte High (opened 2009).