Which factor does not influence the exterior appearance of the building?

The factor that does not influence the exterior appearance of a building is solely based on location. While location may provide context for certain design decisions or requirements, it is not a direct influence on the aesthetic characteristics of the building itself. For example, a building's style or materials might adapt to the climate and cultural influences present in the location, but those adaptations stem from other factors like environmental conditions, architectural style, and client preferences.

In contrast, environmental conditions can dictate the materials used (such as weather-resistant finishes), architectural style informs the overall design approach and aesthetic (utilizing various elements like symmetry, shape, and ornamentation), and client preferences play a crucial role in shaping how the building looks based on individual tastes and needs. These factors actively contribute to the visual identity of a structure, whereas location, while important, does not inherently dictate what the building will look like.