1. A method comprising: receiving input that indicates boundaries of a plurality of individual habitable units; receiving input that establishes a correlation between the boundaries and a base image of a geographic area on which resides the plurality of individual habitable units; receiving a mapping between points on the base image and a plurality of spatial coordinates; based on the input, the correlation, and the mapping, determining a set of spatial coordinates for each individual habitable unit of the plurality of individual habitable units; wherein the method is performed by one or more computing devices.