Architects are licensed professionals who use art and science to design and build structures. Residential architects use their skills to specifically build residential properties, such as apartment complexes and houses, for individual housing purposes. Architects are authorized experts who use workmanship and science to plan and construct structures. Private engineers utilize their abilities to explicitly assemble private properties, for example, high rises and houses, for individual lodging purposes. These experts must finish an engineering program at the single man's or ace's dimension, just as a temporary position, and pass a national permitting examination.