a computer - implemented method permits a service provider to provide to a customer a map that accurately depicts a selected trait present at the site of and in the vicinity of selected real property . the trait may relate to flooding characteristics , air quality , median income , average home value , or other qualities at and near the site , and the map may emanate from , and be subject to change by , an issuing entity , such as fema , epa , a multiple listing service , a bank or other such entity . the service provider electronically obtains the location of the site on a georeferenced street or similar first map . by electronically relating the first map to a second georeferenced map that depicts the trait , the site is located on the second map , which may thereafter be electronically stored and furnished to the customer , along with certain information regarding the trait or other matters , such as advertising or demographics . following a change to the second map , the service provider georeferences the changed map , electronically locates the site thereon , and furnishes same to the customer along with information such as that informing of the consequences of the change or other matters .