Building levels refer to the different floors or stories within a structure, such as a house or a skyscraper. Each level is typically designed for specific functions, like living spaces, offices, or retail areas. The height and number of levels can vary greatly depending on the building's purpose and design. In architectural terms, building levels are often measured from the ground up, with the ground floor being the first level. Higher levels may include additional floors, such as basements, mezzanines, or rooftop terraces. Understanding building levels is essential for construction, safety regulations, and urban planning.