Which of the following is a condition under which the Building Code Commission may require an official to comply with certain regulations?

The Building Code Commission is established to oversee and enforce compliance with building regulations. One of its key functions is to address disputes related to compliance with the building code. When a disagreement arises concerning whether certain regulations have been followed, the commission can step in to clarify and require that officials adhere to specific regulations in order to resolve the dispute fairly and efficiently. This ensures that all parties involved in the construction or renovation process can have confidence in the adherence to building standards and regulations.

The other scenarios outlined in the options do not directly establish a condition under which the commission would mandate compliance in the same authoritative or procedural manner. For instance, while requests from applicants or the public may hold some weight, they do not inherently create a necessary obligation for the commission to enforce regulations. Similarly, a formal complaint can lead to investigations, but it does not automatically mean that compliance is required; it depends on the nature and validity of the complaint. Thus, the context of determining disputes is unique in its authority and relevance to compliance measures by the Building Code Commission.