Bathroom remodeling in Columbus usually means either a small older bath or a larger subdivision bath, both living through humid summers and a freeze on the outside wall. Plaster at the tub rim lets go. A fan pushed into a hot attic loads that attic with moisture and can feed an ice dam on the next freeze. Moving the toilet depends on a drain that may cross a finished basement ceiling. Say if the footprint can stay.
Older baths are narrow, often with a painted window and a surround wet from behind for years. Newer baths have longer drains and windows that were flashed in a hurry. A formed pan and a tiled shower stop water in different ways. The slope to the drain is not a suggestion. A soft floor beside the tub means joists. Some additions hang a bath on a wall that freezes every thaw cycle.
Steam has to get outdoors. A fan that recirculates fails when Columbus nights are already heavy. The duct should not end above the insulation. Ask whether a continuous membrane is going on the walls or only the panel people will see. A valve that wanders belongs in the same scope as the tile. Basement baths need a drain story an upstairs bath can ignore, including what happens when the floor drain is already busy in a storm.
Grab bars need backing in the frame. A curbless shower may mean cutting the floor, which is a bigger structural cut over a slab than over a basement. Say who uses the room. Leave the fan in the work or humid weeks will mark the new corners. A narrow door into an older bath is part of access, not a detail for later.
Say tub, shower, or the whole room, and say older plaster or newer subdivision. Mention a soft floor before finishes. The inland thaw will find any gap you leave at an outside wall. Call the number on this page.