Locate the studs. Drill clearance holes and screw the shelves to the studs with 2-1/2-in. wood screws. Put a rubber bumper on the frame to protect the door.
Install a Shelf and Clothes Rod
Just go to your home center and get standard closet rod brackets, a closet rod and a precut 12-in.-deep melamine shelf. Also pick up some drywall anchors, or if you have concrete, some plastic anchors and a corresponding masonry bit. Fasten shelves to the wall and add the closet rod for instant laundry room storage.