Three main career paths typically chosen by the design professional include residential, commercial and specialized design. Residential design primarily involves the design of personal living environments while commercial design deals with public and work environments. Typical residential specialties can include kitchen and bathroom design, renovation for physically challenged, model homes, or residential historical restoration. Commercial interior design specialties include corporate and executive office, healthcare, retail facilities, institutional, transportation, and hospitality and entertainment venues. Design professionals may also pursue career opportunities in such specialized technical design areas as lighting, codes, product design, or product representative.