I was asking about this a few weeks ago and here's the answer:
Question marks over what to do with $200m Bullsbrook ‘Centre for National Resilience’ quarantine facility Quote:A Commonwealth-funded $200 million quarantine facility in Perth’s north looms as an expensive white elephant with Premier Mark McGowan admitting he is unsure what to do with the compound once construction is complete in the middle of the year.
Announced last August — well over a year into the COVID pandemic — the Bullsbrook “Centre for National Resilience” was intended to largely replace a network of CBD hotels used to quarantine returning interstate and international travellers.
What a colossal waste of 200 million dollars - just like Annastacia's "Wellcamp" facility in Queensland.
Quote:What to do with it, that is the $64 million question,” he said.
“Maybe there is some use we can put it to outside of a pandemic or a disaster (but we haven’t quite landed on what that is yet.
“We’re seeking feedback from people as to what it can be used for.”
“It’s not in the heart of the city. So you know, in terms of backpackers or something, it can’t really be used for that.
“It’s out in Bullsbrook near RAAF Base Pearce so we’re trying to think what else can be done with it.
Oh, gee... think hard, Mark.

Here, I'll give you a one word clue -
MONKEYPOX.
But, by the time this thing is completed Monkeypox will probably be spreading throughout the WA population if it isn't already.