A property’s boundaries may not line up correctly on a map if the map source contains a geocoding error. RPR uses a variety of sources to provide geocoding for properties, and on occasion the geocoding is incorrect. Not all areas have the underlying data required to produce parcel-centerpoint or rooftop-level geocoding accuracy. This is especially true in the case of new developments and rural areas.
If a map you are viewing doesn't display parcel boundaries (the outlines of a property), RPR generally will not display accurate map pins for the area. In such areas, our geocoding engine uses available street centerline and house address range data to interpolate locations. This can result in the clustering or overlaying of map pins.
RPR reports map errors to our providers, such as Microsoft's Bing maps, but such errors can take time to be corrected. RPR does update underlying geocoding data each month, but the import process updates a property's geocode location only when assessment data is updated.
Please also note that you can adjust a map pin that is placed incorrectly. Learn more: http://support.narrpr.com/entries/20518176-can-i-correct-a-map-pin-that-is-located-in-the-wrong-place