To become a licensed PI in Washington, you need to be at least 18, secure employment or a written job offer from a licensed PI agency, complete a minimum of 4 hours of pre-assignment training covering required topic areas and pass a written test, submit your application through the DOL’s online licensing portal, and pass the state exam. Armed PI applicants must be at least 21 and meet CJTC firearms proficiency requirements.
Washington’s private investigator licensing process runs in the opposite direction from most states. You don’t get licensed and then look for work — you find the job first, then apply for your license. The state requires that you have employment or a written offer from a licensed PI agency before the Department of Licensing will process your application. That employer relationship is part of the process from the start.
PI work in Washington spans the full range of investigative services: fraud investigation, loss prevention, personal protection, skip tracing, and domestic matters. Demand is strongest in the Seattle, Spokane, and Tacoma metro areas, with opportunities in both established agencies and independent practice.
You must have a private investigator license in Washington if you’re providing investigative services, escort or bodyguard services, or property loss prevention services on behalf of a licensed agency. If you’re working independently or opening your own agency, you’ll need an agency license in addition to your individual license. PI license requirements vary by state — what Washington asks for is distinct from neighboring states like Oregon and Idaho.
All PI licenses in Washington are issued by the Washington State Department of Licensing. To get licensed, you’ll need to meet the eligibility requirements, secure your position with a licensed agency, submit your application, and pass the state exam.
Step 1. Meet Washington State Basic Eligibility Requirements
To qualify for a private investigator license in Washington, you must:
- Be at least 18 years old (21 if applying for armed PI status)
- Be a U.S. citizen or resident alien. Note: Washington updated this terminology in the 2026 legislation, effective June 11, 2026. Verify current requirements with DOL before applying.
- Have employment or a written offer of employment from a licensed Washington PI agency
- Not have been convicted of a crime that the DOL director determines directly relates to your capacity to perform PI duties
Washington issues four types of PI licenses. Here’s what each covers:
| License Type | Who It’s For |
|---|---|
| Private investigator agency | Anyone establishing their own agency providing investigative, personal protection, or loss prevention services. Agency principals must also pass a state exam or demonstrate at least three years of investigative experience (2,000 hours per year) |
| Unarmed private investigator | Standard license for PIs who do not carry a firearm |
| Armed private investigator | For PIs who are at least 21 years old and have met the firearms proficiency requirements established by the Washington State Criminal Justice Training Commission (CJTC) |
| Certified trainer | Licensed PIs with at least three years of experience who are certified to conduct pre-assignment training |
All four license types require a minimum of 4 hours of pre-assignment training covering the following topic areas (per WAC 308-17-300). Time can be distributed across topics as needed, provided the four hours are devoted solely to these subjects:
- Legal powers and limitations
- Evidence
- Report writing
- Courtroom testimony
- Confidentiality/privilege
- Federal, state, county, and municipal court systems
- Common sources of public information
- Frequent activities in violation of criminal statutes
- Privacy laws and electronic surveillance
- Fair Credit Reporting Act and permissible purposes of reports
After completing training, all candidates must pass a written test of at least 30 multiple-choice questions covering the training topics. All questions must be answered correctly before a candidate is eligible to apply for licensure. The test must be verified and signed by a certified trainer.
Step 2. Apply Directly to a Private Investigator Firm in Washington
Washington is different from most states in that you don’t need a license to start looking for work. In fact, the licensing process can’t move forward without a job offer in hand. That means you can start applying to agencies before you’ve completed any training or submitted any paperwork to the state.
An associate’s or bachelor’s degree in criminal justice, law, or a related field is strong preparation for Washington’s pre-assignment training requirements, the state exam, and the investigative work itself. A degree isn’t required to get licensed, but the coursework covers the legal framework — privacy law, evidence, court procedure — that the exam draws from directly.
If you want to carry a firearm, decide before you apply. Armed PI applicants must be at least 21 years old and meet the firearms proficiency requirements established by the Washington State Criminal Justice Training Commission (CJTC). If you’re applying through an agency, the agency can coordinate the firearms application and fee on your behalf. If you’re going independent or opening your own agency, you’ll handle that submission yourself.
Step 3. Complete the Washington Licensing Application and Pay the Application Fee
Washington PI license applications are submitted through the DOL’s online licensing portal at professions.dol.wa.gov. Paper form 689012 is no longer accepted. You’ll need to create or log into a SecureAccess Washington (SAW) account to access the portal before you can submit.
Current fees are as follows:
| License / Fee Type | Amount |
|---|---|
| Agency (unarmed principal) | $600 |
| Agency (armed principal) | $700 |
| Unarmed private investigator (new) | $220 |
| Armed endorsement (added to the new applicant fee) | $110 |
| Annual renewal | $193 |
| Certified trainer exam | $25 |
| License print fee (mail request; free if self-printed online) | $5 |
For fingerprinting, use a card that’s produced or endorsed by Washington State to avoid processing delays. Getting your prints taken professionally at a sheriff’s or police office is the most reliable approach — it reduces the chance of a rejection that would require you to start over.
Step 4. Complete the Washington State Exam
Washington doesn’t require a degree to sit for the state PI exam, but most applicants benefit from working through an associate’s program in criminal justice or a related field. The exam tests your working knowledge of the laws and procedures you’ll operate under as a licensed PI, and the coursework directly covers what the exam draws on. For a full breakdown of state licensing exam requirements across the country, the site’s exam guide has the details by state.
The Washington state PI exam is broken down as follows:
| Exam Section | Weight | Topics Covered |
|---|---|---|
| How Washington law applies to private investigators | 45% | Privacy law, campaign finance, Washington criminal code |
| Federal laws | 30% | Federal Privacy Act, Freedom of Information Act, Federal Wiretapping Act |
| Legal procedures and definitions | 10% | Washington criminal code, civil procedures, evidence |
| Court systems | 7.5% | Judiciary structure and procedures |
| Other resources of public information | 7.5% | Code reviser’s office, computer databases, public records, and federal laws are available online |
Washington has provided the following resources to help you prepare for the exam:
The International Association of Security and Investigative Regulators (IASIR) provides information about state and local licensure requirements for security and investigative professionals.
The Council on Licensure, Enforcement, and Regulation (CLEAR) is an international organization of professional and occupational licensing professionals dedicated to issues of licensing policy and regulation.
Private Investigator Salary Information for Washington
Private investigators in Washington earned a median annual salary of $65,370 as of May 2024, according to the Bureau of Labor Statistics. The mean annual wage was $72,710. Investigators at the 75th percentile earned $82,640, and those at the top of the field — the 90th percentile — earned $100,890. Washington employs approximately 840 PIs statewide. For comparison, the national median annual wage for private investigators was $52,370 as of May 2024 — Washington sits well above that mark.
Salaries vary across the state’s major markets. The Seattle metro consistently offers the highest earning potential for PIs who’ve built a solid client base, while the Portland-Vancouver metro (which includes southwest Washington) leads on median wages.
| Area | Median Annual Salary | 90th Percentile | Employed |
|---|---|---|---|
| Washington (statewide) | $65,370 | $100,890 | 840 |
| Seattle-Tacoma-Bellevue, WA | $69,550 | $108,810 | 480 |
| Spokane-Spokane Valley, WA | $57,650 | $82,360 | 90 |
| Portland-Vancouver-Hillsboro, OR-WA | $79,110 | $113,210 | 230 |
The job outlook for PIs in Washington is strong. State employment projections show a 34% increase in PI employment between 2022 and 2032, with approximately 640 job openings per year on average — accounting for both new positions and replacements for investigators who leave the field. That’s a pace well above the national average for the occupation.
Frequently Asked Questions
Do I need a college degree to get a PI license in Washington?
No degree is required to get licensed or to sit for the state exam. That said, an associate’s or bachelor’s degree in criminal justice or a related field is solid preparation for Washington’s pre-assignment training and the state exam. The coursework covers legal powers, evidence, privacy law, and court procedure — exactly the areas the exam draws from — and it gives you a foundation that pays off in the field.
Can I apply for PI jobs before I’m licensed in Washington?
Yes, and you’ll need to. Washington requires you to have employment or a written job offer from a licensed PI agency before the Department of Licensing will process your license application. The sequence is built into the system: find the agency first, then apply for the license. You can start your job search without a license in hand, and you don’t need to complete pre-assignment training before you start applying.
What does the Washington PI exam cover?
The exam is divided into five sections: how Washington state law applies to PI work (45%), federal laws including the Federal Privacy Act and Wiretapping Act (30%), legal procedures and definitions (10%), court systems (7.5%), and other public information resources (7.5%). The heaviest focus is on Washington-specific law, so reviewing the state statutes that govern PI practice is the most productive prep. Verify current exam scheduling and administration details directly with the Washington State Department of Licensing.
How long is a Washington PI license valid, and what does renewal look like?
Washington PI licenses are valid for one year and must be renewed annually through the DOL’s online portal at professions.dol.wa.gov. The renewal fee is $193. You can renew up to 120 days before your expiration date. You can reach the DOL’s PI licensing team by phone at 360-664-1843 or by email at [email protected].
Key Takeaways
- The licensing authority is the DOL. All Washington PI licenses are issued and renewed through the Washington State Department of Licensing
- Employment comes first. You need a job or a written offer from a licensed agency before the state will process your license application
- Four license types. Unarmed PI, armed PI, PI agency, and certified trainer; each has different eligibility requirements and fees
- 4 hours of pre-assignment training required. Covering 10 topic areas, including legal powers, evidence, report writing, courtroom testimony, and privacy law, followed by a 30-question written test
- The exam is weighted toward Washington law. State law carries 45% of the exam weight, followed by federal law at 30%
- Strong job growth projected. BLS projects 34% growth in WA PI employment between 2022 and 2032, with approximately 640 average annual job openings
Ready to find a criminal justice program in Washington? Browse accredited programs that can build the legal and investigative knowledge the state exam draws on.
May 2024 US Bureau of Labor Statistics salary and job market figures for Private Detectives and Investigators reflect state and national data, not school-specific information. Conditions in your area may vary. Data accessed May 2026.