A building hoist can be used both indoors and outdoors, depending on the specific design and construction. Outdoor hoists are typically built to withstand weather conditions and are more robust, while indoor hoists are designed for controlled environments. The choice between indoor and outdoor use is determined by factors such as the building's structure, the materials being lifted, and the environmental conditions. Outdoor hoists may require additional features like weatherproofing and corrosion resistance, whereas indoor hoists focus on efficiency and ease of use within a protected setting.