For a basic 1 door project in zip code 47474, the benchmark cost to Paint an Exterior Door ranges between $104.85 - $239.06 per door.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. 2.ime for carefully masking or removing/reinstalling hardware not to be painted is also included. For a basic 1 door project in zip code 47474, the benchmark cost to Paint an Exterior Door ranges between $104.85 - $239.06 per door. To estimate costs for your project: