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Commercial Building Inspector - B2
The Commercial Building Inspector (B2) is the International Code Council's national certification exam for inspectors of commercial structures of any size or occupancy: an 80-question, 3.5-hour, open-book multiple-choice exam on the International Building Code (IBC, 2021 and 2024 code-year editions), delivered via ICC's PRONTO online proctored testing for a USD 320 exam fee and scored against a scale score of 75.
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Questions80 questions
Testing time3.5 hours (3 hours 30 minutes)
ScoringPassing score set by the Code Council and its Exam Development Committee as a scale score of 75; score reports are pass/fail (passing reports show a 'Pass' notification only)
Exam feeUSD 320 (ICC Store list price for the B2 exam; ICC members receive discounted exam pricing — member price shown at purchase via myICC)
Prep options
Study resources for B2
Independent prep
Courses and study resources
Exam overview
What to know before choosing your prep
- Who runs it
- ICC
- Category
- Building Codes & Inspection
- Current version
- Offered against two code-year editions — the 2021 and the 2024 International Building Code (IBC); candidate selects the code year at registration
- Where it applies
- United States — national
- Exam languages
- English
- Testing provider
- ICC PRONTO (Proctored Remote Online Testing Option) — the only exam format listed for B2 on the ICC Store product page
- Format
- Computer-based, open-book exam delivered via ICC's PRONTO online proctored testing (the only exam-format option offered for B2); open-book references are the code-year edition's International Building Code and related I-Codes (IEBC, ICCPC, IECC, IFC, IFGC, IgCC, IMC, IPC, IPMC, IPSDC)
- Availability
- Year-round by appointment — PRONTO online proctoring is available around the clock; candidates select a 2021 or 2024 code cycle at purchase
- Results
- Results available immediately after completion, online or at the testing site
- Remote testing
- Available
Exam structure
80 four-option multiple-choice questions (one option scored correct), open book, across seven content areas: General Administration 6% (project administration, public information and legal, plan reading), Building Planning 20%, Footings and Foundations 8%, Floor Construction 8%, Wall Construction and Coverings 21%, Roof/Ceiling Construction 6%, Public Safety and Special Construction 31% (including Means of Egress 10%)
Where rules vary
Uniform national exam (store More Information State field 'National/All'); jurisdictions adopt/recognize the credential individually, but the exam itself does not vary by state.