Current techniques to determine indoor locations of mobile devices are based on interior scans of wireless access points. The scans may be used to build a database that can model an indoor space by determining locations of the access points and their corresponding signal strengths at those locations. Typically, to create this type of database, an indoor location provider may conduct site surveys at selected locations. However, this may require surveying tens of thousands of buildings and floors to determine the location of the wireless access points. Moreover, the database can become stale and inaccurate overtime due to location changes in the access points after the surveys are complete.