Homeowners no longer need council approval to build a granny flat on any size block in Western Australia following reforms aimed at tackling the housing crisis.
Planning approval is not required for structures up to 70sqm and they can be built on any sized lot without the need for an extra car bay in most cases.
Planning Minister John Carey said the changes would enable more people to build ancillary dwellings but rules still apply.
"COVID has radically reshaped our housing market and as a government, we're taking it seriously and we're throwing everything at it," he told reporters on Tuesday.
"That means we have to be creative in our thinking and look at red tape that can be removed and that's what we're doing with granny flats."
An exemption must be obtained before building, along with a building permit, which Mr Carey said would ensure the structures were properly built.
"Granny flats can be an affordable, efficient and suitable housing option, including for rental properties and elderly family members seeking to downsize and remain in the community they love," he said.
Previously, a minimum lot size of 350sqm was required for an ancillary dwelling.