The operators of the Douglas Village Shopping Centre in Cork have said it could be summer 2020 before it reopens.
Parts of the centre were severely damaged by a fire two weeks ago, which broke out in a vehicle on level one of the car park.
Demolition work on the affected sections of the building is due to begin next week.
An initial area has been identified following a structural examination, but further areas could also be demolished if required, after inspections are carried out.
In a statement posted on social media, the shopping centre operators say the extent of the rebuild will depend on the amount of demolition.
They say "the current advice we have, is that it may be summer 2020 before the centre will be rebuilt and ready to reopen."
So far 137 undamaged cars have been removed by crane from the car park, with a further ten due to be taken out over the weekend.
Forty-nine other vehicles, the vast majority of which have been completely destroyed, will remain in the centre.
It is hoped three cars on the top floor may be recovered during the demolition process.
The centre's operators said: "More on the rebuild time frame will be known once demolition is complete."