I’m not saying that clear-felling and mowing for 50m all around is a good idea - much less the right idea. I don’t. It’s just that it’s what’s generally accepted as what’s necessary to eliminate the risk that your place will go in the next big one.
The $50,000 fine guy was on both the SMH and Age’s websites this morning. You can probably find it with minimal searching. It’s not an irrational decision.
People have said that a 30m radius is good enough, but a number of places in the current fire were this far from the treeline and got lit up by embers.
My mother who lives on NSW’s Central Coast has trees up to the house, but bought a sprinkler system for the roof as a counter-fire measure. Considering that her gutters are full of branches and leaves, I can’t imagine that it’ll be all that much use.
The rational answer is to treat your house as unfortunately expendable - insure it, update the insurance every couple of years to make sure that it’ll cover a full rebuilding, and then in an emergency be prepared to leave it and all its contents behind. Keep your irreplaceable items (copies of photos, important documents that you never use but need to have, etc. as well as a copy of your ID like an expired driver’s licence or your passport) in a safety deposit box in Melbourne.
It’s worth noting that although the winds, heat and dryness made it ineffectual this time around, if you know what you’re doing “stay and fight” is typically a valid option. Where people usually get caught in a bushfire is because they haven’t known what they’re doing when they stay and fight, abandon the house when it’s already ablaze (or close to it) and get cooked on the way to or in their car. If you prepare properly and evacuate ASAP, you might waste a day each season when you unnecessarily abandon ship, but you’ll live and you can come back.
If you want to live in the bush, there are some realities that come along with that. But if you do enough planning, and you’re willing to live with the costs that come along with it, you shouldn’t have to sacrifice the things that brought you bush in the first place.
That said, your neighbours may not want to take the same precautions.