The phrase "basement storage" refers to keeping things in a room or area located underground in a building, typically used for storing items that are not needed frequently. Full definition
We took the quick photos when we brought it home last month and it is now in basement storage while I decide. (rusticmaple.com)
I'm inspired right now by organized spaces — whether it's just basement storage or a beautifully organized laundry room. (theinspiredroom.net)
In a clever twist on the Arte Povera credo, Pistoletto employs ordinary materials as subjects and uses the viewer as accomplices to elevate things usually found in basement storage rooms or garages into art. (heikemoras.com)