From the 101 freeway, exit on Van Nuys Blvd. and go south (south will be to the left if you are coming from the east on 101; south will be to the right if you are coming from the west, including from the 405/101 interchange).
Proceed south on Van Nuys to Moorpark Street and turn right. Parking lot is on your left. Note that parking is free only after 5 PM and on the weekend; weekdays before 5, you may prefer to use metered street parking.
The office is in the Hamburger Hamlet building on the corner of Van Nuys Blvd. and Moorpark Street. The lobby faces Van Nuys Blvd; take the elevator to the fourth floor and suite 404 is facing you as you come out.