I agree. It's definitely a Shingleback (Tiliqua rugosa) and looks to be the eastern subspecies T. rugosa asper. It's out of its natural range and possibly a dumped or escaped pet (as mentioned) or possibly picked up on the road and transported to this ill-suited coastal district. Either way, it's wholly unsuited to humid coastal regions such as this, so unless rescued will probably inevitably succumb to ill-health.
You're welcome Paul. It's probably in the lizards best welfare to have it rescued by a wildlife carer, such as someone from WIRES. It's been quite dry lately but as soon as the wet weather hits, it'll probably get a respiratory infection, which without treatment may prove to be fatal.