An exercise pen is perfect for housing your rabbit. It can be shaped as a 48 inch square, a rectangle, or a circle. It provides enough space for the rabbit when it is not out for exercise time. A water and food crock, litter box, and a hidey box all fit inside with room to hop and explore. A 30 inch tall pen works well for most rabbits. Some people like to rabbit proof an entire room for their rabbit to live in, instead of a pen. Below are some examples of x-pens and rabbit rooms.
Outdoor housing is dangerous and not recommended.