ICC EXAM PRACTICE TESTS

I am an ICC-Certified Building Official, and before that I built houses. These are the practice tests I wish had existed when I sat for my own inspector and plans examiner exams: two full-length timed tests for each ICC certification exam, at the real question count and the real time limit, with the question mix weighted to the content outline ICC publishes for that exam — and every answer explained by the section, table or defined term that carries it.

They cover 29 exams across the inspector, plans examiner, fire, code enforcement and Certified Building Official tracks, most of them on both the 2021 and the 2024 code years. Every course is hosted on Udemy; the links below go straight to it.

First, the code year

ICC offers most of its national exams on two code years at the same time, and your exam bulletin names one of them. Pick the practice course for that year. The 2021 and 2024 editions are different books: the 2024 IRC moved stairways from R311.7 to R318.7 and put carbon monoxide detection where stairways used to be, the 2024 IBC shuffled the accessibility features in Section 1110, and the 2024 IECC moved its residential fenestration and air-leakage sections to new numbers. A course written to the wrong year will send you to the wrong page on exam day, which is the one thing an open-book exam punishes.

The exceptions on this page are the NEC-based E2, which runs on NEC editions (2020 and 2023), and the CBO and Fire Marshal legal and management modules, whose questions come mostly from the administration texts rather than from a code year.

How the tests are built

Every question was written against the full text of the code it cites, then run through the same checks a plans examiner would run on a submittal: the cited section has to exist in that edition, the cited text has to actually support the keyed answer, and any number in an answer has to appear in that section. Table questions were checked row and column. No question keys to an appendix or to a value the model code leaves to the jurisdiction. Where a section carries a condition — new construction versus alteration, a Group R versus a Group B occupancy, an exception that only applies under a size — the question states the facts so the condition is clear.

The tests do not claim a passing percentage, because ICC reports a scaled score. What they give you is the habit that passes open-book exams: knowing where to look.

The combination cards

ICC's combination inspector certifications are earned by passing the four trade exams: B1, E1, M1 and P1 for Residential Combination Inspector, and B2, E2, M2 and P2 for Commercial Combination Inspector (confirm the current requirements with ICC before you plan a sequence). Most people take them one at a time. On the residential side the order hardly matters, because B1, P1 and M1 are all written to the same book, the IRC. On the commercial side, building first is the usual path, then plumbing and mechanical, then electrical. Plans examiners usually come from the inspector side, and the Certified Building Official modules sit on top of all of it.

ICC exam FAQ

Practice tests written by Brent J., an ICC-Certified Building Official. These are independent study aids, not affiliated with, endorsed by, sponsored by or approved by the International Code Council. International Code Council, ICC and the I-Code names are registered trademarks of the International Code Council, Inc.; the National Electrical Code and NEC are registered trademarks of the National Fire Protection Association. Completing a practice course does not confer any certification. Course links open on Udemy in a new tab.

Studying the residential code? The free permit quiz and the IRC cheat sheets cover the sections inspectors get asked about most.