A catio can be built in any home, no matter the size. While some people build large, elaborate ones, a small window enclosure also will work if you’re short on space.
Make sure the catio is fully enclosed, so cats cannot get out and predators cannot get in.
Provide cats a view of the outdoors, and make sure there’s ventilation so that fresh air comes in. Be aware of the weather: You might need a fan in the summer or a heater in the winter.
Include plenty of toys and features your cats enjoy, such as climbing shelves, scratching posts, cat condos, trees or a water fountain.
Keep their litter box in the catio.
Make the space pleasant for humans, too. Include comfortable seating so you and your cats can enjoy the catio together.
— Kate Benjamin, founder of Hauspanther.com