Most of our downloadable data is served through the SF OpenData portal.
The City and County's Enterprise Address System (EAS) supports search by street address or Assessor Parcel Number (APN) for official addresses, refreshed nightly.
San Francisco Planning Department offers many details through this online resource, which is refreshed nightly.
City and County Department of Technology (DT), San Francisco Enterprise Geographic Information Systems Program (SFGIS) provides online access to resources through a system of servers, manages the City and County's Enterprise License Agreement with GIS vendor Esri, and an enterprise contract with aerial imagery provider Pictometry.
Seamless orthophotography, bare-earth terrain, color near-infrared, and vegetation index imagery available.
GIS data are endowed with real-world coordinates, so that what is available in one layer can typically be overlaid on another to create many new analyses.
Use SFGIS services to enable your field crews with field data collection. Points can be obtained from mobile device GPS positions or fine-tuned on a detailed photo base map. Set up your own classes attributes to collect at each point.