Illinois Home Inspector License Examination Exam Prep
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Free IL-HI Practice Questions

10 exam-style questions with answers and explanations, straight from our 1,030-question bank. Tap an answer to check yourself. When you're ready, take the scored version in the free practice test.

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The IL-HI exam has 200 questions and runs 4 hours.

These 10 free IL-HI questions are organized by exam domain, so you can see how each part of the Illinois Home Inspector License Examination blueprint is tested. Reveal the answer and explanation under each question.

Domain 1: Building Science 34% of exam

Question 1

A one-story addition has an asphalt-shingle roof ending against a taller wall. Step flashing is visible along the slope, but water leaving the lowest flashing runs behind the wall cladding instead of into the gutter. Which missing detail would redirect that water?

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Correct answer: D - Kick-out flashing at the lower end of the roof-to-wall intersection.

Question 2

A second-floor bedroom window has its sill 12 feet above the adjacent exterior grade. It is being evaluated against the 2021 International Residential Code emergency escape and rescue criteria. With the sash fully open, the unobstructed opening is 22 inches wide by 34 inches high; its bottom is 40 inches above the finished floor. Which finding belongs in the report?

Show answer & explanation

Correct answer: A - The clear opening is approximately 5.2 square feet, below the required 5.7 square feet.

Question 3

Static water pressure at a house's hose bibb measures 92 psi. Each bathroom faucet has reasonable flow when used alone, but flow drops sharply when several fixtures run together. Much of the original galvanized supply piping remains. Which explanation accounts for both observations?

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Correct answer: A - Excessive static pressure can coexist with restricted flow through internally corroded piping.

Question 4

A homeowner removed the ceiling joists to create a vaulted room beneath a conventionally framed gable roof. Collar ties remain in the upper third of the rafters, and the ridge is a nonstructural ridge board. No engineered ridge beam or alternative thrust restraint was added. The remaining collar ties do not replace which critical function of the removed joists?

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Correct answer: D - Resisting outward thrust at the exterior walls through tension across the rafter feet.

Domain 2: Analysis and Reporting 38% of exam

Question 5

In a 1950s house, a GFCI receptacle replacing a two-slot outlet is labeled "No Equipment Ground." Its integral TEST button shuts off a plugged-in lamp, and RESET restores power. A three-light tester indicates an open ground, but its external GFCI-test button does not trip the device. How should these results be reconciled?

Show answer & explanation

Correct answer: B - The external tester lacks the grounding path needed for its test; the integral test can still operate.

Question 6

While a gas furnace is running, a carbon-monoxide alarm begins its CO alarm signal. No one reports symptoms, and the inspector's handheld meter reads 0 ppm near an open front door. What takes priority?

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Correct answer: B - Get everyone outside and call emergency services from a safe location; do not re-enter until cleared.

Question 7

An infrared camera shows a cool patch below a bathroom. A pinless meter set to a relative drywall scale reads 82 there and 19 on nearby drywall of the same construction. The surface is firm and unstained. Which statement accurately describes the evidence?

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Correct answer: C - The readings identify an anomaly needing corroboration, not a measured moisture percentage or a confirmed leak.

Question 8

A 19-year-old gas furnace completes a normal heating cycle. Accessible components show no observed combustion, venting, or electrical defect, and the report explains that the heat exchanger was not fully visible. The buyer asks whether the furnace must be replaced before move-in. Which reply is best supported?

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Correct answer: A - Age supports planning for replacement, but these observations do not establish that immediate replacement is necessary.

Domain 3: Business Operations 20% of exam

Question 9

Before an inspection begins, the buyer asks that a detached workshop also be inspected. The signed agreement covers the dwelling only. The inspector is qualified to inspect the workshop and has time to do so. What is the soundest way to handle the added building?

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Correct answer: C - Confirm and document the client's agreement to the workshop's scope, fee, and limitations before inspecting it.

Domain 4: Illinois Law and Rules 8% of exam

Question 10

For the November 30, 2026 renewal, an Illinois home inspector first licensed in 2024 has completed six approved Mandatory CE hours, five approved elective hours, and a one-hour Sexual Harassment Prevention course approved for elective credit. All courses and providers hold the required licenses. What should the inspector do to satisfy the CE requirements?

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Correct answer: B - Complete two more approved Mandatory hours; the prevention course already counts toward the total.

That's 10 of 1,030

The full bank has 1,020 more IL-HI questions with explanations.

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