Natts House was an old house (storage area?) that belonged to the Minazuki family that wasn't being used any more. Karen said it was ok for the PreCure girls and Coco and Nuts to use it as their hideout.

Nuts cleaned up, and turned it into a fashionable store. He even created a room for Coco too.

The second floor of Natts House was a gathering area for the five girls.