Residential Building Inspector B1General Administration, Legal, and EnforcementHard
A local jurisdiction has adopted the 2021 International Residential Code (IRC) with local amendments. A builder is constructing a new home and refers to an older edition of the IRC (2015 IRC) for specific requirements, believing it to be current. An inspector discovers a discrepancy where the 2015 IRC allows a certain construction method, but the adopted 2021 IRC with amendments prohibits it. Which standard must the inspector enforce?
- AThe builder's chosen code, as long as it ensures basic safety.
- BThe 2015 IRC, as it was a nationally recognized standard.
- CThe most conservative (strictest) of the two codes to ensure maximum safety.
- DThe 2021 IRC as adopted by the local jurisdiction, including amendments.
Show answer & explanationAnswer & explanation
Correct answer: D. The 2021 IRC as adopted by the local jurisdiction, including amendments.
The inspector must always enforce the code edition and any local amendments officially adopted by the local jurisdiction. These adopted codes supersede any prior editions or unadopted standards.
Why the other options are wrong
- A. The builder cannot choose which code to follow; the jurisdiction's adopted code is mandatory.
- B. An older, unadopted code is not enforceable, even if nationally recognized.
- C. While safety is paramount, an inspector must enforce the adopted code, not choose arbitrarily between standards or interpret 'conservatism'.
Adopted Code
The specific edition of a model building code (e.g., IRC) that has been formally enacted into law by a state or local jurisdiction, along with any local amendments.
- The sole enforceable standard for construction.
- Supersedes prior editions or unadopted standards.
- Includes all local amendments.
Memory trick: The adopted code is the law, no other code applies.