Average Units per Acre of Newly Approved Residential Development
City Planning and Housing Departments of Silicon Valley
Silicon Valley Institute for Regional Studies
Data are from Joint Venture Silicon Valley’s annual land-use survey of all cities within Silicon Valley. The 35 cities/counties included in the FY 2016-17 Residential Density analysis are Atherton, Belmont, Brisbane, Burlingame, Campbell, Colma, Cupertino, Daly City, Foster City, Fremont, Gilroy, Half Moon Bay, Hillsborough, Los Altos, Los Altos Hills, Los Gatos, Menlo Park, Millbrae, Morgan Hill, Mountain View, Newark, Pacifica, Palo Alto, Portola Valley, Redwood City, San Carlos, San Jose, San Mateo, County of San Mateo, Santa Clara, County of Santa Clara, Saratoga, South San Francisco, Sunnyvale, and Union City. Most recent data are for fiscal year 2017 (July 2016-June 2017). Residential density was calculated as the average residential density of the participating cities. Beginning in 2014, the residential density analysis began to exclude secondary units that were approved with the primary unit.
Beginning in 2008, the Land Use Survey expanded its geographic definition of Silicon Valley to include cities northward along the U.S. 101 corridor (Brisbane, Burlingame, Millbrae, San Bruno and South San Francisco). In 2014, the Survey expanded to include all Silicon Valley cities (adding Colma, Daly City, Half Moon Bay and Pacifica).