Under what circumstances may the chief building official enter a property without a warrant?

The correct choice highlights that a chief building official may enter a property without a warrant specifically for maintenance inspections or to address unsafe conditions. This ability is granted to ensure the safety and compliance of buildings with the relevant codes. When there is an imminent danger or a situation that poses a risk to public safety, it is crucial for the building official to act swiftly to mitigate any potential hazards. This can include situations such as structural failures, health risks, or other safety issues that require immediate attention.

Access for maintenance inspections allows officials to conduct necessary checks and ensure that properties adhere to building regulations, ultimately safeguarding the welfare of the public. This protocol acknowledges the responsibility of officials to protect inhabitants and the community as a whole.

The other provided options do not align with the legal authority granted to a chief building official. While entering during business hours, following a complaint, or with the owner's consent may create conditions under which entry is easier or more accepted, they do not directly pertain to the immediate obligations of addressing unsafe conditions without a warrant.