If you're going to do any part of the painting or prep work on your own, you must know that the first step in preparing a surface is washing it. Since dirt can affect the smoothness of a surface area -- and therefore paint's adhesion to it -- use soap to remove any dirt or stains. Make sure there's no soap left on the walls when you're finished; also make sure to remove any gloss with sandpaper and vacuum up the leftover dust.
Stucco is a specialized material that requires extensive preparation work (cleaning, caulking, filling in cracks, etc.). Additionally, paint suitable for rolling or brushing over stucco varies greatly depending on location and climate conditions. Some stucco paint varieties will chip and peel away in certain climate conditions, so painting professionals won't recommend them. These factors make stucco one of the more expensive siding materials to cover. You can expect to pay anywhere from $900 (~500 sq. ft.) to $3,000 (~1,500 sq. ft.) to have stucco revitalized with paint, depending on how much is needed to cover the home exterior.
