Exterior house painting costs depend on several factors: the size of the house, the number of stories, the surface condition, homeowner preferences, and location-specific variables. Essential materials include paint, primer, caulk, brushes, and rollers. Both painters and contractors provide their expertise, impacting project costs. Estimating involves considering materials, labor rates, and factors like the size of the house or any special requirements. Paint manufacturers and hardware stores offer materials, while paint calculators and estimating tools simplify planning and budgeting.