These are the addresses advertised on their website(s) as at...

These are the addresses advertised on their website(s) as at 07/04/18:

https://intiger.com.au/contact-us/
Integrity House
67 Howe Street,
Osborne Park, WA 6017

https://boom.intiger.com.au/Home/Contact
Suite 9
330 Churchill Avenue
Subiaco WA 6008
AUSTRALIA


As per the Ann, looks like they may have moved Boom-HQ within Subiaco and down the road to:
Barringtons House
283 Rokeby Road
Subiaco WA 6008