Ausurv Pty Ltd phone 25 Davey St Mandurah, Western Australia 6210 map G I Cole & Associates Pty Ltd phone PO Box 441 Mandurah, Western Australia 6210 map if (!IN_DEV) { ?> } ?> Mandurah Survey Services phone Unit 6, 16 Sutton St Mandurah, Western Australia 6210 map