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Firefighting makes the next fire worse. You need to have a theory that doesn't involve more expensive fire fighting every time someone builds a new house. This is general means defending towns and letting the mountainside burn.





This is an insurance problem more than anything else.

If insurers were allowed to and incentivized to price accurately, homes in dangerous areas (flood plains, fire hazards) would be too expensive to buy, and people... wouldn't.

Especially given that if you can't get insurance, you can't get a mortgage, which drastically limits your buyers.


I 100% agree with that, but the way pricing works is generally not sufficiently granular. You either get underpriced government backed plans, or a plan that does not take into account your actual circumstances. Eventually sufficient big data might be able to solve the pricing problem. Defensible construction will have cheap insurance and indefensible buildings will not be economically insurable. The problem is insurance is by county (lol) or by "city". Neither work in CA mountains.

> the way pricing works is generally not sufficiently granular

Is this caused by regulations or the insurers approach?

Genuinely ignorant here.


Legislation generally opposes granular insurance policies, as it is discrimination.

But in the case of home insurance, unlike health, people actually have a choice: build there or do it somewhere else.

Artificially forcing blended home insurance rates lessens the pricing signal that this particular area might be too risky to build in.

At the end of the day, it's developers and the city/county making money while offloading the risk to insurance companies and government mortgage buyers.


There have been endless lawsuits by homeowners alleging discrimination in their insurance rates. All this impairs granular risk assessment and insurance rates. A recent WSJ article was about lawsuits from homeowners who were quoted higher insurance rates because their roof was rotten and/or there were trees that could fall on their house.

The same has happened with auto insurance rates (men and women have different accident rates, so used to have different rates), and, glaringly, medical insurance rates.


Most medical insurance isn't really insurance, it's more prepaid health care.

I've seen people asking why car insurance doesn't cover oil changes the same way dental insurance covers cleanings, so be careful what you wish for, I guess.

It's discrimination when it's based on uncontrollable situations. It is not discrimination when it's based on factors one can control. And an indefensible structure in a fire zone is most certainly something you can control. Pricing it appropriately would keep builders from building them in the first place and it would get the people that have them to do what they can to make it more defensible.

The problem is people come to the legislature screaming about being charged a rate that actually reflects the risk. The legislature eventually responds by making insurance spread the costs over it's policy base. This results in people to screaming to the legislature because their rates are skyrocketing to pay for the idiots in the danger zone. The legislature eventually responds by not allowing insurance companies to charge enough--and they walk.

By the time you reach the point of the insurance companies walking you've already had many chances to fix the problem. But we never learn, people are determined to have their cake and eat it also.


Is that even feasible? How exactly would firefighters defend towns from large wildfires. They can't cut an effective fire break around an entire town.

The bigger the town the easier it gets. Towns have roads and parking lots and cmu commercial buildings that are mostly non-flammable. They also have water supplies and logistics infrastructure. Centralized defense is very feasible. Mountain roads and poor communications cause an underutilization of resources.

That doesn't seem accurate. Commercial buildings aren't necessarily in the outskirts of town. And while the buildings themselves might be slightly more fire-resistant than typical wood frame houses, they're full of flammable materials. Look what happened with the Camp Fire in 2018.

It's simply not possible to make a practical house that won't support combustion. However, we don't need to. The threat is not what happens when the house is exposed to direct fire, but what happens when the house is exposed to ignition sources. And those *can* be stopped. Build your house such that there isn't anything combustible on the outside of the house and all access points are made spark proof.

Our house is not fire engineered--but still it has very few spots that could ignite. That's simply because we have stucco walls and a concrete tile roof. There is some exposed wood but not much. Nor are the vents spark proof.

Unfortunately, concrete tile roofs aren't suitable in many places (they don't like hail) and can't be retrofit onto most houses due to the weight.


The cost of a fire break is proportional to the perimeter, the value is proportional to the area.

True in a mathematical sense but irrelevant in practice. Realistically there won't ever be enough firefighters available nearby to cut an effective fire break around an entire town while a wildfire is burning nearby. Do you have any concept of how much manual labor and heavy machinery this takes?

You know firebreaks can be cut before a fire, right?

Even in the case of an emergency firebreak, if there aren't enough firefighters to cut one large one, there aren't enough firefighters to cut lots of small ones with a greater total length.


That's one of those hilarious "peak Hacker News" comments from someone who obviously has never spent much time cutting down trees and clearing brush. There are hundreds towns at risk of wildfires. The scale of effort necessary to cut effective fire breaks around them and keep them clear every summer would be enormous. The state has nowhere near the budget for that. Do the math. And besides that there are numerous other problems including private property access and environmental impact laws that make the whole idea ludicrous to anyone who lives in the real world.



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