The interim changes to planning rules come into force on Thursday, with the government expecting an influx of applications.
It will also start community consultation to shape long-term changes designed to enhance the region's resilience and reduce the impact of any future flooding events or declared emergencies.
Planning Minister Nick Champion said the government had moved quickly to improve planning rules and help affected communities get back on their feet as soon as possible.
"It's critical we learn lessons from the devastating flood event and build back better to mitigate future risk," the minister said.
The interim rules allow for floor levels to be increased from 2.5 to three metres above ground and for the maximum height of buildings to rise from 7.5 to eight metres.
They also call for roller doors to be installed on all four sides of any enclosed area to ensure the free passage of floodwaters.
A streamlined assessment process for sheds, carports and garages located behind a riverfront dwelling will also be used.
An estimated 4000 properties were inundated along the Murray over summer, with the majority requiring a complete rebuild or significant repairs.
In some areas, water levels rose to heights not experienced for more than half a century.
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