ICC CBO
ICC Certified Building Official (CBO)
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ExploreAbout this exam
The Certified Building Official (CBO) is a professional credential issued through the International Code Council (ICC) certification program. It is designed for people who manage or oversee building code enforcement for a jurisdiction - typically building officials, assistant building officials, and senior plan reviewers or inspectors preparing to move into that role. Earning the CBO signals that a candidate understands not only the technical codes but the legal, procedural, and managerial responsibilities that come with running a code department. The exam is delivered in multiple-choice format and is organized around five practice domains: legal and administrative provisions; permitting and plan review; inspection and field enforcement; code enforcement and violations; and department management and administration. Because the role is supervisory, questions tend to test judgment and process - how to apply code provisions lawfully, document decisions, handle appeals and violations, and administer a department - rather than calculation alone. This page is an independent study resource. We are not affiliated with, endorsed by, or sponsored by the ICC, and we do not reproduce ICC exam content. Candidates should confirm current exam logistics, editions, and reference lists directly with the ICC before scheduling. The most reliable preparation path is a careful reading of the adopted code editions, local amendments and administrative provisions, and hands-on familiarity with the permitting, inspection, and enforcement workflows a building official actually supervises.
What you'll study
About ICC CBO preparation
What is the CBO credential for?
It is an ICC professional certification for individuals who administer building code enforcement - building officials and those being groomed for that role. It is intended to demonstrate competence across legal authority, permitting and plan review, field inspection, violation enforcement, and department management, not just technical code knowledge.
What is the exam format?
The exam is multiple choice. The exact number of items, the time allowed, and the passing score are set by the ICC and are not published on this page. Check the ICC certification pages or your candidate bulletin for the current figures before you schedule.
How long is the test and what score do I need to pass?
We do not list those figures because they can change between exam revisions and we have not verified current values from an official ICC source. Treat any number you see on a third-party site as unverified and confirm it directly with the ICC before your test date.
How hard is the CBO exam?
It is generally considered a management-level exam rather than an entry-level one. Difficulty comes less from memorizing tables and more from scenario questions about legal authority, documentation, appeals, and enforcement discretion. Candidates who already supervise inspections or plan review usually find the workflow questions most familiar.
Can I retake the exam if I fail?
Retake rules, waiting periods, and any additional fees are set by the ICC and are not stated in the source material we were able to retrieve. Contact the ICC directly for the current retake policy rather than relying on older published summaries, which may no longer be accurate.
In what order should I study the five domains?
Start with legal and administrative provisions, since the statutory authority, definitions, and administrative code sections frame everything else. Then work through permitting and plan review, inspection and field enforcement, and violations, and finish with department management. That order mirrors the sequence a real permit application travels through a department.
Why do candidates fail?
The most common failure modes are studying only technical code provisions and neglecting the administrative and legal chapters, working from an outdated code edition, and never practicing scenario questions about enforcement discretion, notices, and appeals. Candidates who never read their local amendments and administrative provisions often miss a large share of judgment items.
How should I prepare?
Read the adopted code editions and the administrative provisions your jurisdiction actually enforces, including local amendments. Practice applying them to realistic permit, inspection, and violation scenarios. Supplement with ICC training or reference materials, and take timed practice questions so you can gauge pacing before exam day.
How long is the certification valid, and how do I renew?
Validity periods and renewal requirements are established by the ICC and change periodically. We have not confirmed the current term from an official source, so review the ICC maintain-and-renew documentation for the requirements that apply to the year you certify.
Is this site affiliated with the ICC?
No. This is an independent study resource. We do not reproduce ICC exam content, and our questions are original material written for practice. Always verify exam specifics, reference lists, and scheduling details with the ICC or your testing provider before relying on anything you read here.