Perth's lockdown will come to an end at midnight on Monday, but some restrictions will remain in place.
On Friday, the Western Australian city entered a three-day snap lockdown after a man who spent five days in the community tested positive for COVID-19.
"The lockdown will end as planned," Western Australia Premier Mark McGowan told reporters on Monday.
"Interim restrictions will come into force from midnight tonight allowing us to take a steps down approach after the three-day lockdown.
"We need to be cautious as we come out of lockdown as the virus could still be out there."
From Tuesday, there will be a 20 person limit in all private indoor and outdoor gatherings.
Schools will reopen, but secondary school students will be required to wear a mask.
Hospitality venues and retail shops will reopen but restaurants will be able to offer seated service only.
Casinos, nightclubs and indoor fitness venues will remain shut.
"I know this makes it tough for many businesses, I acknowledge that it is important we remain cautious and ease restrictions so we can get back to normal as soon as possible," McGowan said.
Masks will also be mandatory at indoor and outdoor gatherings, and on public transport.