Suppose that an interior designer is asked to decorate a casual living room for a family of four. The first step is to meet with the family. The designer will measure the room and find out how the family wants to use it and how much money they can spend on decorating it. This will affect the kind of furniture they buy and the way it will be arranged. If they do a great deal of entertaining, for example, they will need more seating than they would otherwise. If they have books, a sound system, or video-game equipment they want to use in the room, the designer will have to devise shelves to hold these items.
Next the designer draws a plan of the room, putting in doors and windows, and marks the plan to show where the furniture will be placed. The plan is done to scale. That is, if the scale is 1 inch (2.54 centimeters) to 1 foot (30 centimeters), every foot (30 centimeters) of the room's dimensions will be shown as 1 inch (2.54 centimeters) on the plan. The furniture is shown in the same scale.
The plan reflects the room's traffic pattern—how people will probably move through the room—as well as its use. The furniture should be arranged so that the space in the room is used in an appealing way—so that pieces are not crowded together or spaced too far apart. Furniture placement must also be functional. For example, side tables should be near chairs. The designer also determines the room's focal point. If it has a fireplace or a good view through a window, chairs and sofas will be placed so that people can enjoy these things. With a computer-aided design (CAD) program, a designer can use computer graphics to show a client a three-dimensional view of how the finished room might look.
When the family has approved the plan, the designer helps them decide on the style of furniture and the color scheme of the room. They may want a country look, a contemporary look, or an Asian look. Or they may prefer a mixture of styles. Then the designer helps the family choose pieces that fit the room's scale as well as its style.
The next step is to design a background—wall and floor coverings, fabrics, and window treatments—that works with the style chosen for the room. Wallpaper or wood paneling on the walls might suit a country look, for example. The designer may even add ceiling beams to complete the look. On the other hand, glossy painted walls and mirrors might go well in a contemporary room. The floor covering may be wood with area rugs in front of the sofas and chairs, or wall-to-wall carpeting. Formal draperies might suit one room and casual, wooden shutters another.
The designer will also devise the lighting for the room. There must be strong lamps near sofas and chairs for reading. Spotlights and track lights can be used to highlight a work of art or to wash a wall with light. If the lights are controlled by dimmers, they can be changed from soft to bright to meet the requirements of the moment.
The final step is to add accessories to the room. Accessories include paintings, vases, candlesticks, and other personal things.