From Hwy 880:
take A Street going east towards the hills. Go about 2.25 miles and turn right onto Foothill Blvd (right after Main St), go one block and turn right onto B Street and go about ½ a block and turn right into the parking lot driveway just beyond the Masonic building.

From Hwy 580 coming south:
Take the Hayward exit which will put you onto Foothill Blvd.  From the first stoplight (at Maddux Rd & Foothill Blvd), go about 1.3 miles to B Street (right after A Street) and turn right onto B Street and go about ½ a block and turn right into the parking lot driveway just beyond the Masonic building.

From Hwy 580 coming west from Pleasanton:
When you get to Castro Valley, take the Strobridge Ave exit, and turn right onto Stanton Ave, go 1 block and turn left onto Castro Valley Blvd, go under the freeway and turn left onto Foothill Blvd. Go about 1.3 miles to B Street (right after A Street) and turn right onto B Street and go about ½ a block and turn right into the parking lot driveway just beyond the Masonic building.