A Certified Interior Designer is a person who engages in programming, planning, designing, and construction documentation services for interior improvement, alteration, construction or installation of non-structural, (or non-seismic), elements within a building. An Interior Designers may also submit their plans to local building departments for a permit if their plans and your project require a licensed contractor to implement them. Design is the process of communicating visually using text and images to present information. Design practice embraces a range of cognitive skills, aesthetics and crafts, including visual arts and page layout.