Base Transceiver Stations (BTS), are mobile communication network components. Establishment of these sites as elements that have physical dimensions and own unique features, imposed unfortunate consequences on the urban areas. The intensity of these effects is much more than what was expected through ignoring urban planning principles and rules. Minimizing the number of BTS stations through site sharing approach between different operators is one of the most important strategies in reduction of adverse effects of those sites. In this research, to evaluate possibility of applying this approach in Tehran city, based on data types, first we used ArcGIS software to study current status of network deployment of three active mobile operators in Tehran, and then we evaluated the site sharing approach to organize sites deployment systems according to the network technical requirement. Data analysis based on possibility of sites relocation, considering operators nearby sites distance and using existing sites, then neighbor sites in distance less than 50 m, 50 to 100 m, 100 to 150 m and 150 to 200 m identified. Research findings shows that theoretically and potentially for nearby sites in less than 50 m distance, it is possible to reduce 432 sites to 215 sites, for nearby sites within 50 to 100 m, from 156 sites to 76 sites, for nearby sites within 100 to 150, from 186 sites to 90 sites and for nearby sites within 150 to 200 m from 224 sites to 106 sites, and overall for all nearby sites within less than 200 m distance, it is possible to reduce 998 sites to 487 sites. Considering technical specifications of sites network, relocating of sites with less distances is more feasible and finally in practice, relocating many of the listed sites is possible.