Hello how may I help you? How large of an apartment do I need to have a cat? How old is your cat I havent got one yet. I would like to know if my place is large enough first. Will your cat be an indoor cat or an outdoor cat? It will have to be indoors A cat can do well in small places just be sure to provide plenty of toys and activity outlets for it ok great. can two cats fit in an average apartment? If they have known each other and have gotten along for a long time they should be fine and be able to keep each other company Ok. Thank you. do not put two unknown cats together You are welcome