National Home Inspector Examination study plan
NHIE · Give each week a clear focus.
8 weeks · About 7 hours per week
Structural Systems
Trace the path of structural loads from roof to footing and explain how each transfer point can fail
Classify the five common foundation types and state two inspection clues that identify each
Distinguish cosmetic from structural cracking by width, direction, and displacement
Diagnose the ten most common floor, wall, and roof framing defects from written descriptions alone
Write a defect-observation sentence for each framing issue using neutral, condition-based language
Your checkpoint
A one-page defect reference table covering 20 structural conditions, each with the visual clue, likely cause, and recommended action, plus a 40-question self-written structural quiz scored at 80% or better on a second attempt
Mechanical Systems
Sequence the components of a forced-air heating system and state the failure symptom of each
Compare combustion-air, draft, and venting requirements for Category I versus Category IV appliances
Identify the safety defects that require an immediate hazard callout in gas, oil, and electric heating equipment
Explain the operating cycle of a compression-refrigeration cooling system and predict symptoms of low charge, restriction, and airflow starvation
Describe the inspection limits for concealed HVAC components and the correct reporting language for those limits
Your checkpoint
A written 25-item HVAC defect log with the reported condition, the safety classification (immediate hazard, repair, monitor), and the correct narrative wording for each
Electrical Systems
Trace service entrance to branch circuit and label each component with its inspection function
Distinguish grounded, grounding, and bonding conductors and explain what each protects
Identify the conditions that mandate an immediate hazard report, including exposed live parts, missing knockouts, and improper panel bonding
Test three receptacles and two GFCI/AFCI devices using only written procedures and record the correct interpretation of each result
Apply the correct deferral language when panel interiors, covers, or dead fronts limit the inspection
Your checkpoint
A completed 30-question electrical self-test with every wrong answer rewritten as a corrected rule statement, plus a one-page panel-inspection checklist
Plumbing Systems
Map a complete potable water supply path and a complete DWV path, naming the function of each fitting
Explain trap seal protection, venting, and the fixture conditions that break a seal
Diagnose the standard water-heater defects including TPR valve discharge, venting, and seismic or expansion provisions
Distinguish a supply leak symptom from a drain leak symptom using only reported observations
State the inspection limits for water supply, waste lines, and private well or septic components
Your checkpoint
A two-column plumbing diagram hand-drawn from memory with 15 labeled components, plus a timed 50-question mock across Domains 1 through 4 scored at 75% or better
Roofing
Identify the six common roof coverings and describe the correct flashing detail at each penetration and transition
Diagnose the difference between a covering defect and a deck or structural defect from a written description
Evaluate site drainage, grading, and hardscape conditions against slope and clearance standards
Explain the inspection and reporting limits for walking a roof and the alternatives when access is unsafe
Write condition statements for exterior wall cladding, trim, and window defects without speculating on concealed damage
Your checkpoint
A 20-item roofing and site condition inventory, each written as a complete report narrative with location, observation, implication, and recommendation
Interior & Insulation and Ventilation
Classify interior finish defects by cause: moisture, movement, installation, or occupant damage
Trace the air and moisture movement path through a wall assembly and identify where the vapor retarder belongs in each climate
Identify the ventilation requirements for unconditioned spaces and the signs that ventilation is inadequate
Distinguish insulation defects that affect performance from those that are cosmetic
Apply the correct reporting language for conditions that are concealed, inaccessible, or outside the standard of practice
Your checkpoint
A written comparison of two attic scenarios, one correctly ventilated and one not, listing the observable evidence for each, plus a 40-question combined interior and insulation quiz scored at 80%
Professional Practice (report writing, standards of practice, business)
Draft a full inspection report narrative for a mock property containing at least one defect from each domain
Structure findings using a condition, implication, recommendation format and separate safety hazards from maintenance items
Identify the boundaries of the standard of practice and list five systems or components that are routinely excluded
Explain the purpose and limits of a pre-inspection agreement, a limitation notice, and the client's duty to read the report
Rank a set of sample findings by severity and justify each ranking in one sentence
Your checkpoint
A complete 12-section mock inspection report for a single property with at least 20 findings, correctly classified and formatted
Structural Systems & Mechanical Systems & Electrical Systems & Plumbing Systems & Roofing & Exterior and Site & Interior & Insulation and Ventilation & Professional Practice (report writing, standards of practice, business)
Complete three timed full-length practice exams under exam-day conditions and record per-domain accuracy
Re-drill every domain scoring below 75% using targeted rewrite of missed concepts
Recite the safety-hazard triggers for all four system domains without reference material
Rehearse the report-writing format one final time on a fresh set of findings
Finalize an exam-day plan covering timing per question, flagging strategy, and a review pass
Your checkpoint
A domain-by-domain score sheet from three timed mocks with all domains at or above 80% accuracy, plus a written one-page exam-day timing plan
Milestones
Week 2: Explain the load path and the heating and cooling cycle out loud in under five minutes each without notes
Week 4: Score 75% or better on a timed 50-question mock covering Domains 1 through 4, the heaviest content block
Week 6: Score 75% or better on a timed 50-question mock covering Domains 5 through 8
Week 8: Score 80% or better in every domain across three full-length timed practice exams