A Solution When You Need to Install Surface Electrical Wiring is to use a Surface Conduit.
Wiring GFCI Outlets Wiring Home Electric Circuits 120 Volt and 240 Volt Outlet Circuits Wiring Light Switches Wiring 3-Wire and 4-Wire Electric Range Wiring 3-Wire and 4-Wire Dryer Cord and Dryer Outlet Not the answer you're looking for?
Some electricians will patch the holes; others leave the patching to you.
What it means: Increased risk of electrocution in wet areas, such as baths and kitchens. (Codes today require GFCIs within 4 feet of any sink and on all garage, basement, and outdoor outlets.) Danger level: High.
Don't be alarmed if the inspection turns up code violations.