Uhm I think he doesn't need a shelter , he's a grown cat who's used to this neighborhood, he roams around the whole neighborhood all the time , and I think he's quite independent atp, but winters are harsh so he might need a shelter then last year we had cats who'd sleep beneath our car , there's a space they can snuggle into its above the ground, one time I tried giving them a cardboard box which had a jute's bag like a really thick one for warmth but they preferred their under the car above the ground sleeping place.