They must have professional knowledge of issues affecting the physical comfort, safety and convenience of an interiors occupants. Also they must be familiar with local building codes, government regulations and have drawing and presentation skills.

Important concepts in interior design include color selection, color palettes and how they affect the perception of space and mood, spatial organization, knowledge of fabrics, finishes, design styles and trends.

Next, the schematic (planning) phase, designers work on the following activities: drawings and sketches (quick drawings) of proposed floor plans, perspectives, elevations and details. The drawings most often made by interior designers are floor plans, arc

Once the job is complete, the interior designers must get final approval and then receive payment. Photos may be taken for a portfolio and testimonials and/or references requested.