Natural light. Natural light is often in short supply in a basement. In this picture, the kitchen was placed by the lone window to maximize sunlight in the prep area. Also, many building codes require a second way to exit the basement if the space is going to be finished. Get more light and satisfy code requirements by installing an egress window and window well. An egress window is big enough for a person to exit through it, and the well allows more light into your basement. To avoid water problems, have a drain installed at the bottom of the well.