1. A computer-implemented method for identifying duplicate property listings in a data store, comprising: retrieving a first set of summary data values derived from a first subset of images and a second set of summary data values derived from a second subset of images, a summary data value being configured to uniquely distinguish an image associated with a rental property from other images associated with other rental properties; comparing, using a computer resource, each summary data value in the first set of summary data values with each summary data value in the second set of summary data values; incrementing an image count responsive to a match between the summary data values in the first and the second sets of summary data values; retrieving first listing attributes associated with a first property listing data file associated with the first subset of images and second listing attributes associated with a second property listing data file associated with the second subset of images; incrementing an attribute count responsive to a match between a first listing attribute and a second listing attribute; correlating the image count and the attribute count to an image threshold count and an attribute threshold count to derive a correlation value indicating that one or more portions of the first property listing data file is similar to one or more portions of the second property listing data file; and initiating generation of a control signal configured to cause the computer resource to perform a corrective action.