From US 101:

1.

Exit HWY 101 at SAN JUAN HWY/CA-129 heading EAST
2. Turn SLIGHT LEFT onto SAN JUSTO ROAD
3. Turn RIGHT on PRESCOTT ROAD
4.

PICKUP/DELIVERIES:
Enter FIRST DRIVEWAY on PRESCOTT ROAD
  OFFICES:
Enter SECOND DRIVEWAY on PRESCOTT ROAD