- What the WA-HI State Portion Actually Covers
- Why the "Domains" Are Statutes and Rules, Not Topic Buckets
- The Core Content Areas You Must Master
- Question Format, Timing, and Delivery
- Registration, Fees, and Eligibility Mechanics
- Who Hires WA-HI-Licensed Inspectors
- How the Scaled Score Actually Works
- Mapping a Study Plan to the Content Areas
- Frequently Asked Questions
- The WA-HI state portion has 24 scored questions with one hour allowed, plus possible unscored experimental items.
- Content areas map directly to RCW 18.280, RCW 18.235, and WAC 308-408, 308-408A, 308-408B, and 308-408C.
- Passing requires a scaled score of 70 - not 70% of questions correct.
- State-only fee is $125; combined state and national fee is $300; original licensure totals $720.
What the WA-HI State Portion Actually Covers
The Washington Home Inspector Licensing Exam (Washington State Portion) - abbreviated WA-HI throughout this site - is administered by PSI Services on behalf of the Washington State Department of Licensing (DOL). Unlike a broad inspection-skills exam, the state portion is narrowly focused: it tests your knowledge of Washington-specific licensing law and administrative rule, not general home systems knowledge. That material belongs to the separate national portion, which first-time licensure candidates must also pass.
Because this exam is legal-and-regulatory in nature, the "content areas" aren't inspection disciplines like roofing or electrical. They are the statutes and administrative code chapters that govern how Washington-licensed home inspectors must operate, report, and stay compliant. If you're coming from a background in field inspection training, this distinction matters - a lot of candidates underestimate this portion because they assume it overlaps with technical inspection knowledge. It doesn't overlap much at all.
Why the "Domains" Are Statutes and Rules, Not Topic Buckets
The examined PSI candidate bulletin (dated December 10, 2024, and available as a third-party reproduction) doesn't break the state portion into named content domains with percentage weightings the way some certification exams do. Instead, the 24 scored questions draw from a defined set of legal source documents. Treat each of these as its own content area to study individually - that's the most accurate way to organize your prep for this specific exam, and it's the approach we use throughout the WA-HI Study Guide 2026.
For a deeper look at how these areas interact with test difficulty and pacing, see our companion piece on how hard the WA-HI exam actually is.
The Core Content Areas You Must Master
RCW 18.280 - Home Inspector Licensing
This is the primary licensing statute for home inspectors in Washington. Candidates need to understand licensure eligibility, the structure of the law itself, and how it establishes DOL's authority over the profession.
- Definitions used throughout the licensing framework
- Scope of practice as defined by statute
- Grounds for denial, suspension, or revocation
RCW 18.235 - Uniform Regulation of Business and Professions Act
This chapter applies broadly across multiple DOL-regulated professions, including home inspectors. Expect questions on how disciplinary processes, unlicensed practice penalties, and general regulatory procedure apply to inspectors specifically.
- General enforcement and investigation authority
- Unprofessional conduct standards
- Interaction between this act and profession-specific statutes
WAC 308-408 - General Rules
This is the backbone administrative code chapter implementing RCW 18.280. It covers licensing procedure, education and field-training requirements, renewal cycles, and continuing education.
- 120 approved classroom hours and 40 field-training hours, including at least five complete inspections
- Field training supervised by an inspector licensed at least four years
- Two-year birthday renewal cycle and 24 CE hours per renewal
WAC 308-408A, 308-408B, and 308-408C
These sub-chapters add detail on top of the general rules - expect them to cover standards of practice, report-writing obligations, and definitions that were amended effective August 7, 2026. Because that legal effective date differs from the bulletin's publication date, make sure your study materials reflect the current version of these rules, not an outdated one.
- Standards of practice for conducting and documenting inspections
- Written report requirements (travel, meals, and report-writing time don't count toward the 40 field-training hours)
- Updated definitions and terminology effective in 2026
Key Takeaway
Don't study these four WAC chapters as a single blur. Separate 308-408 (general rules), 308-408A/B/C (standards and definitions) into distinct review sessions - they test differently on the exam even though they're related in law.
Question Format, Timing, and Delivery
The state portion is a closed-book, computer-based multiple-choice exam. You'll have one hour to answer 24 scored questions, though additional unscored experimental items may appear without being flagged as such - treat every question as if it counts.
PSI offers this exam at test centers and via remote proctoring, both requiring matching photo and signature identification. A key logistical detail candidates often miss:
- Physical calculators are provided at test centers, but not in remote sessions
- Remote scratch paper and breaks are prohibited entirely
- Current PSI appointment instructions govern exactly what's permitted at the time of your scheduled session, so confirm details before test day
For a full breakdown of scheduling windows and deadlines tied to your application approval period, see WA-HI Exam Dates 2026.
Registration, Fees, and Eligibility Mechanics
Understanding the fee structure matters because it directly affects how you register and which exam version you sit for.
| Exam Path | Fee | Who It's For |
|---|---|---|
| State-only exam | $125 | Reciprocity applicants and state-only retakes |
| National-only exam | $250 | Candidates who still need the national portion |
| Combined state + national | $300 | Most first-time licensure candidates |
| Original licensure (total) | $720 | Full initial licensing cost beyond exam fees alone |
Eligibility mechanics differ depending on your path. Standard applicants must be at least 18 years old, complete 120 approved classroom hours, and log 40 field-training hours involving at least five complete inspections and written reports, supervised by an inspector with four years of licensure. That education and field training must be finished within two years before your exam application. Reciprocity candidates instead need two of the previous four years of active, good-standing licensure in a jurisdiction that meets or exceeds Washington's requirements.
Once approved, your exam application stays valid for six months, and a passing result remains valid for one year - both deadlines worth tracking on a calendar the moment you apply. For a full walkthrough of every dollar figure involved, including renewal costs, see WA-HI Certification Cost 2026, and for the full prerequisite checklist, check WA-HI Requirements 2026.
Who Hires WA-HI-Licensed Inspectors
A Washington home inspector license opens work with independent inspection firms, real estate brokerages that refer inspection services, and self-employed practice serving home buyers and sellers across the state. Because licensure is a legal requirement to practice and advertise as a home inspector in Washington, passing this exam (state and national portions combined) is the gatekeeping step before you can accept paid inspection work under your own name or firm.
If you're weighing whether the time and cost investment makes sense for your career plans, our analysis in Is the WA-HI Certification Worth It? and the practical outlook in WA-HI Salary Guide 2026 and WA-HI Jobs can help frame the decision before you commit to the education hours.
How the Scaled Score Actually Works
One of the most misunderstood facts about this exam: passing requires a scaled score of 70, not 70% of the 24 questions answered correctly. Scaled scoring means raw answers are converted through a formula that can weight questions differently, so you can't simply calculate "how many I can miss" using basic percentage math. Treat every question - scored or unscored experimental - as equally important during the exam itself, since you won't know which items are experimental.
We break down exactly what this scaled score means for your preparation strategy in WA-HI Passing Score 2026, and if you want context on how challenging this scoring model makes the exam relative to expectations, revisit How Hard Is the WA-HI Exam?. For a look at what's publicly known about outcomes, see WA-HI Pass Rate 2026.
Mapping a Study Plan to the Content Areas
Because the state portion is legal-and-regulatory rather than technical, spaced review of statute and rule language works better than memorizing inspection checklists. Break your remaining preparation weeks around the four content areas identified above rather than following a generic study template.
RCW 18.280 and RCW 18.235
- Read both statutes in full at least twice
- Note every definition and every disciplinary provision
WAC 308-408 general rules
- Map education, field-training, and renewal requirements
- Memorize the 120-hour classroom and 40-hour field-training figures
WAC 308-408A, 308-408B, 308-408C
- Focus on standards of practice and report-writing rules
- Cross-check against the August 7, 2026 amended definitions
Mixed review and timing practice
- Simulate the one-hour, 24-question format under closed-book conditions
- Review fee structure and application deadlines so logistics don't cost you points
For a condensed, single-page reference you can review the night before your test date, keep the WA-HI Cheat Sheet 2026 handy, and run full-length timed practice sets on our practice test platform so the pacing of 24 questions in 60 minutes feels routine before exam day.
Key Takeaway
Spend the most review time on WAC 308-408 and its sub-chapters - they carry the operational detail (hours, supervision, reporting) most likely to appear as specific, fact-based questions rather than general legal theory.
Frequently Asked Questions
The PSI candidate bulletin does not publish separate named domains with percentage weights. Instead, the 24 scored questions draw from RCW 18.280, RCW 18.235, and WAC 308-408, 308-408A, 308-408B, and 308-408C - treat these statutes and rule chapters as your content areas.
No. The state portion covered here tests Washington licensing law and administrative rule only. Technical inspection knowledge belongs to the separate national portion, which first-time licensure candidates must pass in addition to this state exam.
You need a scaled score of 70, which is not the same as answering 70% of the 24 questions correctly. See WA-HI Passing Score 2026 for a full explanation.
The state-only examination fee is $125. Candidates who still need both portions pay $300 for the combined state and national exam, and the national-only fee is $250.
Amended definitions and standards under the relevant WAC chapters take effect August 7, 2026 - a legal effective date separate from the December 10, 2024 bulletin publication date. Make sure your study materials reflect the current, updated rule language.