From I405 N :
Take exit 26 (Bothell/ Mill Creek). 
Go south 2 miles on right

From I405 S :
Take exit 24, Beardslee Blvd.
Turn right onto NE 195th St. Stay straight. Turn right onto Bothell Way NE (WA-527) Go 0.3 miles on left

From I-5 :
Take I-5 to Lake City Way NE.
Follow WA-522 East about 7 miles.
Turn left onto Bothell Way NE (WA-527)
Go 0.3 miles on left