As an experienced custom painting and home improvement company in Yorktown and Williamsburg, Virginia, we get one question A LOT when it comes to home interior painting. That is, how much does it cost to paint the WHOLE interior of my home? This answer does not describe the cost for doing a few rooms or most of your house. This answer is if you are painting all of the rooms in your house, excluding the garage. As always, the answer can vary, but my goal is to go over the cost of whole house interior painting, options within whole house interior painting, how to save money and an example of why completing a whole house interior paint job is better than completing room by room.