Listing/Selling a Property? Remember...First Impressions Do Matter! Is it important that the interior of a home you are showing is clean and appealing to your potential buyer? Why would the exterior be any different? Think of the difference a house wash, gutter polishing, and driveway cleaning would make. The homeowner will easily recoup the cost of an exterior cleaning project due to the home's increased curb appeal. The benefit to you and your seller are obvious.