Washington Private Investigators and Investigation Agencies
Following are private investigators and investigation agencies in the state of Washington. Before hiring a detective or agency, contact the appropriate state licensing authority to confirm current license information.
Washington Department of Licensing, Public Protection Unit
405 Black Lake Boulevard
P.O. Box 9649
Olympia, WA 98507-9649
Hire a Private Investigator in Washington
The following list is in alphabetical order and is by no means a ranking. We encourage you to evaluate each detective’s services and select the most appropriate provider based on your individual needs. Take the time to review their website (if available) and call several different investigators to ask questions and get price quotes. To learn more, read our article Tips for hiring a P.I.
Advanced Investigative Concepts
Owner: Marvin Wilson
10900 NE 4th St Suite 2300 Washington 98004 2761
- Background investigations
- Matrimonial Checks
- Infidelity Checks
- Process Service
- Locates ( Legal)
- Overseas offices in Asia
F.R. Investigations, PLLC
Owner – Roger D. Montgomery / President
1402 Lake Tapps Pkwy. E. #104-323, Auburn, WA 98092
Telephone – 253-804-0263
FAX – 1-8660406-6504
The premier investigative agency in the Pacific Northwest specializing in domestic and civil cases. Washington State private investigator license # 1039. Roger Montgomery is the President of Washington Association of Legal Investigators.
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Owner: Alan Halle
35th Ave NW WA 98332
License # 1615
Criminal and Civil Defense, Surveillancem Process Service
International Counterintelligence Services, Inc. of Washington
Washington Private Investigator, celebrating 40 years in business! We have private investigators on call 24 hours a day/seven days a week available for a free consultation. You can call our local Washington phone number at (206) 515-2000 or toll free (800) 828-9198. If you are seeking an investigation we have the exact specialist for you. We are licensed, insured, bonded and have been serving clients in and outside of the state since 1967. Visit our website or call for our extensive list of investigators and credentials. International Counterintelligence Services, Inc.® (ICS™) License No. 2725
700 NW Gilman Blvd. # 463, Issaquah (Seattle), Washington 98027
Owner – Steven Gudin, Director
Telephone – 425-313-1776
Seattle Tacoma Washington Private Investigator Detective Surveillance & General Investigations, Information, Intelligence, Counter surveillance & Counterintelligence, WA License # 1661, NV License # 847
Northwest Loss Prevention Consultants
Washington License 2672. Member of WALI, Greater Seattle Chamber of Commerce, BNI, Washington Restaurant Association. Employee investigations, criminal, pre-employment background, skip tracing, attorney services, mystery shopping services, criminal and civil investigations.
Owner – James Powers, Principal Investigator
1517 S. 27th Street, Renton (Seattle), Washington 98055
Telephone – 425-235-0989
FAX – 425-226-4267
Specialist in Surveillance, Domestic Infidelity, Missing Persons, Locates, Video/Digital Documentation, Process of Service, Insurance, Worker Comp, Attorney Services, and General Investigations. WA License #601825062-1686, CA License #25093.
Seattle Private Investigator – Confidential Detective Agency
P.O. Box 467 Mercer Island, Washington<
Owner – S. Chesterfield / Principal
Telephone – 206-251-2839
We specializes in Infidelity Investigations, Criminal Background Checks, and Armed Executive Protection services. Washington State P.I. Agency license #2214. Bonded.
Security Management and Integration
Owner – Cecil Avery
1423 East 29th St, Suite 317, Tacoma Washington 98404 USA
Telephone – 2537225832<
FAX – 2537225961
SMI investigations are extensive, detailed, and fully develop issues as to character and trustworthiness of the business or personnel being investigated. SMI technical surveys provide a organization a comprehensive view of how to protect it vital communication plan through analysis of phone, fax, face-to-face, computer intercepts, secure communication and facility implementation. SMI understands that technical countermeasures is more that locating eavesdropping devices, but a total ontology of espionage of a company’s vulnerabilities to sophisticated attacks that include honey traps (spies), social engineering, blackmail, and hacking and recommends approaches to protect overall security of your communication plans.
Owner – Kevin Steward, Principle
3316 Harbor View Dr., Langley, Washington 98260<
Steward Investigations is a licensed and bonded private investigator agency operating in Washington State, agency license #1656. Steward Investigations’ Principal Investigator, Kevin Steward, P.I. license #2988, has over 18 years of investigative experience. Primary areas of service include: Criminal Defense, Civil Litigation, Process Service, Custody Disputes, Infidelity Investigations, Witness Locates, Missing Persons, Law Enforcement Interviews, Court Testimony and Armed Investigation Services.
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