A capability for determining an offset of a wireless access node is presented. The determined offset of the wireless access node may be used by a location determination process associated with the wireless access node and configured to determine locations of mobile wireless devices that are communicating via the wireless access node. The offset of a wireless access node may be determined by determining a known location of a device when the device communicates via the wireless access node, determining an estimated location of the device when the device communicates via the wireless access node where the estimated location of the device is determined using the location determination process associated with the wireless access node, and determining the offset of the wireless access node based on the known location of the device and the estimated location of the device.