Which building code should a contractor follow?

The correct choice is that a contractor should follow all local building codes. This is crucial because building codes vary significantly by location; local codes are established to meet the specific needs, safety standards, and regulations of a community. They take precedence over federal standards and other codes since they reflect the rules set by local authorities and address particular environmental, geographic, and demographic conditions.

While federal building codes and special codes such as the National Electrical Code and the International Building Code provide useful guidelines, they do not necessarily incorporate the unique requirements established by local municipalities. Therefore, it is essential for contractors to be familiar with and comply with the local regulations that govern construction in their respective areas to ensure both legality and safety of their projects. Additionally, not adhering to local building codes can result in penalties, project delays, or safety hazards, which underscores their importance in any construction project.