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King County Administration Building

500 Fourth Ave.
Seattle, WA 98104

Public transit

A number of public transportation options are available:

Driving directions

From the south

  1. Take I-5 Northbound
  2. Take exit 164A, following signs to James Street.
  3. Take James Street exit
  4. Turn left on James Street
  5. The building is on James between Fourth and Fifth Avenues
  6. Arrive at 500 Fourth Ave. (entrances on Fourth and Fifth) 

From the north

  1. Take I-5 Southbound
  2. Take exit 165A toward James Street
  3. Continue on 6th Avenue
  4. Turn right on James Street
  5. The building is on James between Fourth and Fifth Avenues
  6. Arrive at 500 Fourth Ave. (entrances on Fourth and Fifth) 

From I-90 west

  1. Take I-90 Westbound
  2. Take exit 2C right, I-5 Northbound
  3. Take exit 165A toward James Street
  4. Continue on 6th Avenue
  5. Turn right on James Street
  6. The building is on James between Fourth and Fifth Avenues
  7. Arrive at 500 Fourth Ave. (entrances on Fourth and Fifth) 

Parking and electric vehicle charging stations

  1. Goat Hill parking garage (entrance on Jefferson Street between Fifth and Sixth Avenues; street address is 415 6th Ave. across the street from Chinook Building); for pricing, please call 206-652-0849. King County employees receive discounted parking here.
    • EV charging stations are located on level P7 (six stations as of 12/2017).
  2. Seattle Public Library parking garage
  3. Lots surrounding the Courthouse;
  4. Metered street parking.

Admin Building agencies

Admin Building services

  • Job applications, human resources (County)
  • Licenses - vehicle, business, marriage, taxi cab
  • Property assessments
  • Property tax info, payments
  • Real estate recording
  • Senior citizen tax exemptions
  • Vehicle tabs & renewal
  • Voter registration

Office hours

  • Most agencies open to public
    8:30 a.m. to 4:30 p.m.
    Please check agency sites for specific hours.
  • Building hours
    6 a.m. to 5:30 p.m.