A leading interior design professional brings together elements of architecture, psychology, aesthetics, and product design to create a cohesive whole, while utilizing a wide variety of skills in their work. You'll also need to master many areas important to your job, such as how floor plans work and local building codes that can limit your design options. Most interior designers focus on one area of ​​expertise because they can become familiar with the different skills required for the job. For example, someone who designs airports will likely be working primarily with airports and similar structures. This is because it takes a lot of time to become familiar with airport requirements and most of that knowledge cannot be transferred to others. loft apartment. In a broader sense, interior designers may focus on commercial design, including various buildings such as schools, hospitals, and government buildings, or they may focus on residential spaces.