Washington State Investigators
Seattle Private Investigator | Private Investigation Services in Washington State
Washington State Investigators provides licensed, fully insured private investigation services based in greater south Seattle (Burien), serving clients throughout King, Pierce, and Snohomish counties, as well as statewide across Washington. We specialize in professional surveillance, legal evidence development, and thorough background investigations for attorneys, businesses, and private clients. For discreet, evidence-driven investigative services, call (206) 661-0412, SMS (425) 835-3860 or email info@wsipi.com for more information.
Attorneys
Attorneys need usable facts that clarify liability, damages, credibility, and leverage. We provide attorney-directed litigation support, witness location, surveillance, scene work, and evidence development for civil, family law, and other complex matters. Serving Seattle, King County, and Washington State, our investigations are built to strengthen case strategy, expose weaknesses, and deliver reliable facts counsel can use with confidence.
Civil Investigations
Civil investigations are about protecting rights, assets, and legal position with reliable proof. Whether the matter involves domestic surveillance, complex background issues, or hidden asset and wealth questions, our civil investigators develop the facts needed to clarify disputes and support civil cases throughout Seattle, King County, and Washington State for clients who need stronger answers before taking the next legal step.
Criminal Investigations
Criminal investigations require disciplined fact development to support a fair defense. Our team handles criminal defense investigation with emphasis on witness interviews, timeline review, surveillance, and evidence re-evaluation that others may overlook. Serving Seattle, King County, and Washington State, we provide professional investigative support built to expose weaknesses and clarify disputed facts about your case.
Why Choose Washington State Investigators?
WSI PI News
2020 Small Business Excellence Award
- Licensed in WA | Active credential
- Fully Insured in WA | Active COL
- 17+ Years Investigative Experience
- AAS | Networking & Security
- Background | OSINT | Research
- Civil | Criminal Investigations
- Covert Surveillance Specialists
- Crypto | Cyber Investigations
- Personal Injury Litigation Support
- Property Loss Prevention Services
- Specialty Databases | Resources
- Serving Seattle | Washington State
- Confidentiality | Integrity | Professionalism
About Washington State Investigators
Principal Investigator
Wolfgang Grasst, founder of Washington State Investigators, combines IT Networking & Security with professional investigative fieldwork to support complex matters throughout Washington State. Based in Seattle, he provides surveillance, research, digital discovery, and fact development with discretion, technical precision, practical experience, and disciplined investigative judgment built to help clients and counsel move forward with reliable facts.
Research & Surveillance
We develop facts for legal, domestic, and private matters through research, surveillance, OSINT, person locates, and hidden asset inquiries designed to uncover what others miss. By combining traditional field investigation with digital intelligence, our agency delivers actionable findings, photographic evidence, and professional investigative support built to clarify disputed issues and strengthen informed, strategic decision-making.
Investigative Resources
Our Investigative Resources Center gives visitors access to public records, background research tools, state and federal resources, and practical investigative guides designed to help them start in the right place. By organizing useful search tools and research links in one location, we make it easier to find reliable information before moving forward with a legal dispute, domestic matter, criminal case, or other serious investigative issue.What We Actually Prove in Washington Investigations
Not every case turns on the same evidence. Some matters rise or fall on timelines. Others depend on locating the right witness, documenting activity, identifying hidden business or asset ties, preserving online evidence before it disappears, or building usable facts for counsel. The goal is not to collect more information than necessary. The goal is to develop the right proof lawfully, efficiently, and in a form that is actually useful.Background, OSINT & Asset Research
Research often begins with identity questions, public-record gaps, hidden affiliations, business ties, ownership indicators, and asset leads that change how a case should be evaluated.
Litigation Support for Attorneys
Attorney-directed investigations focus on usable proof tied to claims, defenses, witnesses, scene work, online evidence, credibility issues, and reporting that can withstand scrutiny.
Evidence Preservation
Public posts, listings, and digital content can disappear quickly. Preservation work documents what existed, when it was visible, and why it matters before the record changes.
Timeline Reconstruction
Timelines help organize statements, records, sightings, transactions, online activity, and other evidence into a sequence that exposes contradictions, gaps, and leverage points.
Witness Location & Statements
Witness work focuses on lawful location efforts, identity confirmation, outreach strategy, and separating direct observation from rumor, assumption, or hindsight.
Surveillance & Activity Documentation
Strong surveillance documents activity with identity, continuity, timestamps, and context so the final result is usable rather than a random collection of clips.
When the Facts Matter, Method Matters
Public records, online searches, and partial information can point you in the right direction, but they rarely answer the full question on their own. What changes outcomes is lawful proof, careful verification, and investigative work built to withstand scrutiny. Whether the issue involves family concerns, hidden activity, litigation support, witness location, asset questions, or digital evidence, the value is not in collecting more noise. It is in developing reliable facts that help you make the next decision with clarity.
Need a Professional Investigator?
Whether you need surveillance, witness location, asset research, background investigation, litigation support, or help clarifying disputed facts, Washington State Investigators provides lawful, evidence-driven private investigation services throughout Seattle, King County, Pierce County, Snohomish County, and Washington State.
Request a Confidential ConsultationCall 206-661-0412 | SMS 425-835-3860 | Email info@wsipi.com
WASHINGTON STATE INVESTIGATORS