From downtown Seattle, take I-5 south to Exit 164 (to I-90 East, toward Bellevue and Spokane).
Follow I-90 eastbound to Exit 11B (148th Avenue SE).
Follow 148th Avenue for 2.2 miles and turn left onto NE 8th Street (10th stoplight).
Go to the second traffic light and turn right onto 140th Avenue NE (there's a Shell gas station at the corner).
The WSCPA is in the second office building on your right. It is a two-story, light brown building.