Hello how may I help you? I have a cat how much space does it need? Cats don't need much space, they do well being indoor pets. How much space I would need indoors? A dedicated area of a few hundred square feet would be more than ample. So it stays inside? Yes, it is best for your cat to stay indoors unless you are monitoring him or her. Ok, thank you for your help. My pleasure. Do you have any other questions? No, thank you for your time. You're welcome