However, there may be more than just retail business structures within the six block area. All classes of properties lying within the distance shoppers can reasonably be expected to walk to and from retail outlets could include a block of homes or an industrial facility. The commercial properties would be assessed because surveys would illustrate that retail sales depend upon adequate parking for customers. It could also be demonstrated that residential properties (homes), would be excluded because users of those properties might not reasonably be expected to "benefit" from the parking structure. Depending upon various scenarios, industrial properties might similarly, not "benefit", from a parking structure.