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? Take the example below, for instance. See the difference a roof cleaning, house wash with gutter polishing and driveway cleaning made? The homeowner will easily recoup the cost of an exterior cleaning project and due to the home's increased curb appeal. The benefit to you and your seller are obvious.