Contact us: Private investigators

Due to facility issues, this licensing program has limited operations. There may be delays in responding to requests. We apologize for the inconvenience. We’re working toward resuming all business operations as soon as possible.

Private investigator agencies

  • Phone: 800.451.7985
  • Fax: 360.705.6699
  • Email: BLS@dor.wa.gov
  • Mailing address:
    State of Washington
    Business Licensing Service
    PO Box 9034
    Olympia, WA 98507-9034
  • Physical location:
    Business Licensing Service
    6500 Linderson Way SW
    Tumwater, WA 98501
    Driving directions (www.mapq.st)

Armed private investigators, unarmed private investigators, and certified trainers

  • Phone: 360.664.6611
  • Fax: 360.570.7888
  • Email: security@dol.wa.gov
  • Mail forms with payments to:
    Private Investigator Program
    Department of Licensing
    PO Box 35001
    Seattle, WA 98124-3401
  • Mail correspondence with no payments to:
    Private Investigators
    Department of Licensing
    PO Box 9649
    Olympia, WA 98507-9649
  • Physical location
    Department of Licensing
    405 Black Lake Blvd SW
    Olympia, WA 98502
    Driving directions (www.mapquest.com)

Office hours

Monday through Friday
8:30 a.m. to 4:30 p.m.

Holiday closures
HolidayOffice closed…
New Year’s DayFriday, January 1, 2016
Martin Luther King Jr. DayMonday, January 18, 2016
Presidents’ DayMonday, February 15, 2016
Memorial DayMonday, May 30, 2016
Independence DayMonday, July 4, 2016
Labor DayMonday, September 5, 2016
Veterans DayFriday, November 11, 2016
ThanksgivingThursday, November 24, 2016
Native American Heritage DayFriday, November 25, 2016
ChristmasMonday, December 26, 2016

Related information

Washington Healthcare Finder
Good To Go!
Access Washington – official state government website