Leveraging your SOLD listings is your best ROI. Make a plan and work your plan, get the foot traffic from people walking the neighborhood and driving the neighborhood and online exposure from targeted campaigns. Once you have a listing you will have a for sale sign, then you will have a sold sign. Make sure to sell the sold postcard to the area, have your clients do a video testimonial saying how great your were, target that online to the same area and get your online exposure there. Do a campaign with the video testimonial and then you have it all. You will have foot traffic, driving traffic, print material and online material. That is how you leverage your sold listings.