Directions to Sienna Ventures from San Francisco/101 North:
- Take 101 North across the Golden Gate Bridge.
- Travel approximately 9 miles and take the San Anselmo exit.
- Stay in the left lane and merge onto Sir Francis Drake Blvd heading west.
- Turn left at the first stop light onto Berry Way.
- Take the next left onto Drakes Landing Road and continue to the end.
- Sienna Ventures is in Building 100 A.

Directions to Sienna Ventures from the East Bay/80 West:
- Take the 580 West off ramp towards San Rafael and merge onto 580 West.
- Cross the Richmond/San Rafael Bridge and take the Sir Francis Drake Blvd. exit.
- Stay on Sir Francis Drake as it crosses under Hwy 101. Stay in the left lane.
- Turn left at the first stop light onto Berry Way.
- Take the next left onto Drakes Landing Road and continue to the end.
- Sienna Ventures is in Building 100 A.