A map would be able to give a detailed location on a potential house, and provide this information to the buyer. With this they could see local amenities and local services that are provided, not to mention nearby points of interest. Also dangers like flooding would be marked on maps with lower topography markings. A person may not buy a house if certain dangers are near it, like flooding or avalanche risks. They may go elsewhere or have to pay a higher insurance rate.
Hope this helps!
