Locations
These are public spaces, you can just go there without joining the social group. Also check out places to play in the U.S. (from Southwest Badminton Association)
Resources
- Worldbadminton.com https://www.worldbadminton.com/whereToPlay/unitedStates/index.html
- Where to Play Badminton in San Francisco Bay Area http://www.badmintonconnect.com/map/san-francisco-bay-area
- Badminton Clubs in California and the US: http://badmintonclubs.org/california-clubs
- Discussion board with places to play http://www.badmintoncentral.com/forums/index.php?forums/usa-west.82/
- Discussion board focused specifically on playing in San Francisco http://www.badmintoncentral.com/forums/index.php?threads/free-open-gyms-in-san-francisco.34929/
San Francisco Badminton Social Group 