Unless it's a leaner over the top of the house, that's a ripoff, even in California.
I do my own tree work. I climb and top. My forest is in pretty good shape and getting better every year (our place is a helicopter medical evacuation site). If a fire came through here, I'd get chainsaw, drop a couple of trees near the property line, set up a 1-1/2 hose below the house, get a cup of coffee and watch it crawl through the undergrowth. A fire would be a big help to clear out the weed seed. Adjacent to my place is a eucalyptus grove. Now THAT'S a fuel bomb that would spray seed in the draft for a half mile.
As an Engineer I have always tought similarly, that proactive planning and minimal additional work would go a long way, until I realized...
That Friends of the dirt, the Sierra Club, Greenpeace, the ACLU, all conspire to prevent adequate fire fighting and bulletproof water supplies, since they are "growth inducing", and encourage more damn people to move into an area.
No water supply, no power, and the best preparation is useless.