OPA is located at the Seattle Municipal Tower, 700 5th Ave, 17th floor. In-person hours will be Monday-Thursday, 9am-4pm. The 17th floor is not open to the public, please stop by the information desk on the 4th floor so they can alert us that you are here. You can access the 4th-floor lobby on the corner of 5th Ave and Columbia. If you prefer to make an appointment, contact us at opa@seattle.gov or call (206) 684-8797.