Contact Washington State Investigators

Contact Information

For time-sensitive matters, clearly note any deadlines when contacting us.

Confidential Contact With a Licensed Washington Private Investigator

Washington State Investigators is a licensed Washington private investigation agency based in Burien and serving Seattle and surrounding Washington jurisdictions. We provide evidence-driven investigative services with a focus on discretion, lawful methods, and professional accountability.

All inquiries are treated as confidential from first contact. Investigative work, if accepted, is conducted in compliance with Washington licensing requirements and established investigative standards.

What to Include When You Contact Us

For a more efficient initial consultation, it is helpful to have the basics ready. Most consultations are brief, so a short and clear summary is usually best.

Privacy notice: Please do not transmit highly sensitive information electronically. Secure handling options can be discussed after initial contact.

Mailing Address & Service Area

Mailing Address:
1016 SW 150th St
Burien, WA 98166

We serve clients throughout Washington State, including Seattle, King County, Pierce County, and Snohomish County. On-site investigations are conducted where lawful and operationally appropriate.

Professional Standards

Investigations are conducted using lawful techniques and defensible documentation practices. Reporting may include written summaries, timelines, and supporting documentation suitable for attorney, insurance, or internal review.

Washington State Investigators does not provide legal advice. For legal strategy, subpoenas, or discovery decisions, consult qualified counsel.

Credentials & Professional Standing

Wolfgang Grasst holds Washington State Private Investigator License #4287 and carries full professional liability insurance. Washington State Investigators is an active member of the Pacific Northwest Association of Legal Investigators (PNALI) and the Washington Association of Legal Investigators (WALI) — the primary professional associations for licensed investigators in Washington State.

With 17+ years of investigative experience, Wolfgang Grasst combines professional field investigation with IT networking and security expertise to support complex matters throughout Washington State. All investigative work is conducted in compliance with Washington State licensing requirements, applicable privacy statutes, and established professional standards.

Washington State Investigators has been recognized by Expertise.com and Three Best Rated as among the best private investigators in Seattle for 2026.

Submit a Confidential Inquiry

Use the form below to submit a confidential inquiry directly to Wolfgang Grasst. You will receive a copy of your submission at the email address provided. For urgent matters, call (206) 661-0412 or SMS (425) 835-3860 directly.