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NEVADA HOME INSPECTOR LICENSE EXAM QUESTIONS AND CORRECT ANSWERS (VERIFIED ANSWERS) PLUS RATIONALES 2025
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1. What is the primary purpose of a vapor barrier in a crawl space? A. Prevent heat loss B. Reduce moisture migration from the ground C. Block insects from entering D. Support floor insulation A vapor barrier limits ground moisture from entering the crawl space, reducing the risk of mold, rot, and structural damage. 2. What is the minimum clearance between a home's siding and the finished grade? A. 2 inches B. 4 inches C. 6 inches
D. 8 inches Six inches helps prevent water splash-back and moisture damage to the siding.
3. In Nevada, how often must a licensed home inspector renew their license? A. Every year B. Every 3 years C. Every 2 years D. Every 5 years Nevada requires home inspectors to renew their license every two years and meet continuing education requirements. 4. What is the purpose of a GFCI outlet? A. Prevent circuit overload B. Provide surge protection C. Prevent overheating D. Protect from electrical shock in wet areas GFCI outlets shut off power quickly when a ground fault is detected, reducing shock risk in bathrooms, kitchens, and outdoor locations. 5. A double-tapped breaker is generally considered: A. Acceptable in all load panels B. A defect unless the panel is rated for it C. Safe if labeled D. Not under the inspector’s scope Double tapping is usually a defect unless the breaker is designed for it; it can lead to loose connections and overheating.
D. It is stained Horizontal and wide cracks may indicate lateral pressure and structural instability.
10. Which of the following is a requirement in Nevada for home inspection reports? A. Include market value B. Guarantee findings C. Be written and include identified defects D. Be notarized Nevada requires written reports identifying observed defects and conditions at the time of inspection. 11. What is the typical slope required for proper roof drainage? A. 1: B. 1: C. 2: D. 3: A slope of 1:12 is typically the minimum for low-slope roofs to shed water effectively. 12. Aluminum branch wiring is considered a hazard due to: A. Corrosion B. Rodent attraction C. Expansion and contraction leading to loose connections D. Its cost
Aluminum expands and contracts more than copper, which can loosen connections and pose fire hazards.
13. In HVAC systems, what is the function of the condensate line? A. Deliver refrigerant B. Measure airflow C. Drain moisture from the evaporator coil D. Filter air The condensate line removes moisture condensed by the evaporator coil to prevent overflow. 14. Where is the best location for a carbon monoxide detector? A. In the kitchen B. In the attic C. Near bedrooms and fuel-burning appliances D. Near plumbing lines Carbon monoxide is deadly and should be monitored where occupants sleep and near combustion sources. 15. What is "flashing" on a roof? A. A type of tile B. The roof underlayment C. Material used to prevent water penetration at joints D. A ridge vent Flashing seals joints and transitions on roofs, preventing leaks around chimneys, vents, and valleys.
The IRC requires at least 6 feet 8 inches of headroom clearance above stairs. 2 0. Which item is MOST likely to indicate a serious roof problem? A. Discolored gutters B. Debris in valleys C. Soft decking under shingles D. Missing paint on fascia Soft decking suggests water damage or rot beneath the roofing material.
21. When is it acceptable for an inspector to perform a destructive inspection in Nevada? A. With client approval B. Only with written permission and proper licensing C. During any inspection D. If the inspector suspects termites Destructive inspection is outside a standard home inspection unless the inspector is licensed and has written consent. 22. What is the typical lifespan of a tank-style water heater? A. 20–25 years B. 5–7 years C. 8– 12 years D. 30 years Most tank water heaters last between 8–12 years, depending on maintenance and water quality.
23. What condition does a “spongy” bathroom floor typically suggest? A. Loose tile B. Water damage or rot beneath flooring C. Settlement D. Old subflooring Sponginess underfoot suggests moisture-related damage, often from leaks. 24. Which insulation has the highest R-value per inch? A. Fiberglass batt B. Cellulose C. Closed-cell spray foam D. Rock wool Closed-cell spray foam has a high R-value per inch and also serves as an air barrier. 25. A TPR (temperature-pressure relief) valve on a water heater must: A. Be capped B. Drain to the attic C. Discharge to an appropriate location without restriction D. Be optional TPR valves must safely discharge to prevent injury or damage in case of overpressure. 26. What does a home inspector in Nevada need to do before performing an inspection? A. Contact the previous homeowner
D. Plumbing defects Home inspectors do not appraise or assign value to the property.
30. A home’s attic shows dark staining on roof sheathing with a musty odor. This likely indicates: A. Termite activity B. Dust accumulation C. Mold or mildew growth from poor ventilation D. Normal aging Mold from moisture buildup is common in attics with poor airflow or blocked vents. 31. What type of plumbing pipe is no longer allowed in most modern building codes due to failure risk? A. CPVC B. PEX C. Polybutylene (PB) D. ABS Polybutylene pipes have a history of leaking and are banned in many jurisdictions. 32. The HVAC system is blowing warm air in cooling mode. What is one likely cause? A. Dirty ductwork B. Low refrigerant levels C. Improper filter size
D. Frozen thermostat Low refrigerant leads to inadequate cooling performance in air conditioning systems.
33. Which roofing condition is considered a major defect? A. Granule loss B. Exposed nail heads C. Sagging ridge line D. Staining on underlayment A sagging ridge can signal structural problems with roof framing or support. 34. What material is commonly used for modern residential sewer lateral lines? A. Galvanized steel B. Lead C. PVC or ABS D. Cast iron PVC and ABS are lightweight, corrosion-resistant, and widely used for residential waste plumbing. 35. An inspector notices a deck ledger board is attached with only nails. What is the proper evaluation? A. Acceptable if galvanized B. Defect – bolts or lag screws are required C. Acceptable with blocking D. Not part of the inspection Nailed ledger boards can pull away from the structure; bolts or lag screws are required for safety.
B. Promote airflow C. Reduce moisture intrusion and pest entry D. Allow for landscaping Keeping siding above grade reduces the risk of rot and pests entering the structure.
40. Nevada requires home inspectors to carry what type of insurance? A. Health B. Errors and omissions (E&O) C. Flood D. Title Nevada mandates E&O insurance to protect clients and inspectors from legal claims. 41. How should a home inspector report a condition that may require further evaluation? A. Omit it if unsure B. Try to repair it C. Recommend a specialist or qualified contractor D. Wait until after the sale Home inspectors identify issues but refer to specialists when detailed evaluation or repairs are needed. 42. The service drop connects: A. Water to the house B. Electrical utility lines to the house
C. Gas to the meter D. Sewer to the street The service drop is the overhead line that brings electricity from the utility pole to the residence.
43. When inspecting a furnace, the inspector should note: A. BTU rating B. Manufacturer's history C. Proper venting and signs of rust or backdrafting D. If it's electric Venting problems can result in carbon monoxide leaks or combustion issues. 44. If the garage firewall is breached, the inspector should: A. Report it as a major hazard B. Recommend patching with appropriate fire-rated material C. Note it as a cosmetic issue D. Ignore it Garage-to-home firewalls must be intact to prevent the spread of fire; breaches require repair. 45. What is a common sign of foundation settlement? A. Dirty crawl space B. Diagonal cracks over doors and windows C. Soft carpeting D. Dusty walls Diagonal cracks above openings often indicate shifting or settling in the foundation.
C. A type of plumbing D. Common in HVAC Knob and tube wiring lacks grounding and insulation durability; it’s considered obsolete.
50. The purpose of a weep hole in a brick veneer is to: A. Add design detail B. Drain moisture from behind the wall C. Allow air into the home D. Anchor the wall Weep holes are small openings that let trapped water escape from behind the brick to prevent rot and mold. 51. A sump pump in a basement is used to: A. Filter water B. Insulate the basement C. Remove accumulated groundwater D. Add pressure to plumbing Sump pumps help keep basements dry by pumping out water that collects in a basin. 52. When should a home inspector operate a shut-off valve? A. Always B. Never unless authorized or in emergency C. If it looks new D. If it’s for gas
Shut-off valves should not be operated by inspectors unless absolutely necessary or authorized, to avoid damage.
53. Which of the following is a tripping hazard on exterior walkways? A. Discoloration B. Vertical displacement over 1/4 inch C. Weeds D. Settled soil Any vertical rise over 1/4 inch is considered a trip hazard under most standards. 54. An inspector finds moisture around a chimney in the attic. The likely cause is: A. A leaky pipe B. Flashing failure C. Wind D. Interior condensation Flashing is commonly the source of water intrusion around chimneys. 55. A residential stair railing is required when there are: A. 2 risers B. 4 or more risers C. Only when exterior D. Any deck Code typically requires handrails on stairs with four or more risers.