Our free calculator uses up-to-date, trusted data to estimate typical subcontractor costs for a House Exterior Painting project. For a basic 125 square feet project in zip code 47474, the benchmark cost to Paint a House Exterior ranges between $1.16 - $2.43 per square foot* . To estimate costs for your project: 1. Set Project Zip Code Enter the Zip Code for the location where labor is hired and materials purchased.