An exemplary method includes a fiber to the premises (“FTTP”) network modeling system assigning a cost factor to each of a plurality of street segments within a geospatial polyline map of a fiber optic network service area, receiving input representative of a geospatial location of each of a plurality of FTTP demand sites, automatically determining a least cost path along one or more of the street segments for each of the FTTP demand sites to a central office included in the FTTP network in accordance with the assigned cost factors, automatically determining a demand associated with each street segment included in the plurality of street segments; and automatically determining a geospatial location and a size of a plurality of fiber distribution hubs to be included in the FTTP network. Corresponding methods and systems are also disclosed.