Update on our addition! It has walls!
The walls you see here will enclose a “vide sanitaire,” basically a heated closet space, so that this corner of the kitchen will be just as well insulated as the rest of the home. And it will give us a nice big space for basement storage, or a place for the boys to hide!
The spray paint on the wall will be the door between the (eventual) basement bedroom and the closet space. I don’t know about you, but this is exactly the kind of space that 5-year old me loved to play in!