From San Francisco:
Take US 101 North from the Golden Gate Bridge.
Exit at the Marin City/Sausalito exit.
Go straight onto Bridgeway. (you will now be heading south).
Take a LEFT onto Harbor Drive at the fourth light from the 101 exit.
(You will see a sign for Bay Model Next Left in the lane divider just before the Harbor Dr intersection)

From San Rafael:
Go south on US 101 towards San Francisco.
Exit at the Marin City/Sausalito exit.
Turn LEFT onto Bridge Blvd.
Turn RIGHT onto Bridgeway.
Take a LEFT onto Harbor Drive at the third light on Bridgeway.
(You will see a sign for Bay Model Next Left in the lane divider just before the Harbor Dr intersection)

Click here for a map of the area and specific directions