[Charlespg]

I know this seems like a dammed fool question but have they ever considered fire bunkers or building underground ?

A earth and concrete house or barn with heavy fireproof shields that could be closed over the doors and windows might be able to withstand the bushfire

[naturalman1975]

Yes, they have - but only a few people have ever done it. It’s probably a good idea and it will be raised and examined at the coming Royal Commission into the fires.