The SIMTA site is located in the Liverpool Local Government Area. It is 27 kilometres west of the Sydney CBD, 17 kilometres south of the Parramatta CBD, five kilometres east of the M5/M7 Interchange, two kilometres from the main north-south rail line and future Southern Sydney Freight Line and 600 metres from the M5 motorway.
The SIMTA site covers approximately 83 hectares and is currently operating as the Defence Storage and Distribution Centre (DSDC).
The MIC (Federal Government) site is adjacent to the SIMTA site, west of Moorebank Avenue. This site covers 220 hectares and was previously the School of Military Engineering.