What is a type of sign that requires a building permit?

A building permit is typically required for all types of signs due to their potential impact on safety, aesthetics, and local zoning regulations. Wall signs, roof signs, and canopy/awning signs are all considered structural elements that can affect the character of a building and its surroundings.

Wall signs are attached to the building facade and can alter the visual footprint of the property. Roof signs are placed on the roof structure, which may affect the building's height and overall skyline. Canopy/awning signs are often part of a temporary structure and can influence pedestrian traffic and visibility. Each of these sign types must conform to specific building codes and zoning laws, which is why a permit is necessary to ensure compliance with local regulations and safety standards.

Thus, since each of these sign types requires scrutiny to ascertain compliance with relevant codes, the choice indicating that all of the options require a building permit is accurate.