Saltwater corrodes firefighting equipment and may harm ecosystems, especially those like the chaparral shrublands around Los Angeles that aren’t normally exposed to seawater. Gardeners know that small amounts of salt – added, say, as fertilizer – does not harm plants, but excessive salts can stress and kill plants.
Rebuilding is a likely ambition. Forest growing back around homes is not going to make insurance affordable. Community solar where deforested is good use of land both for climate, and insurability. Solar displaces more CO2 than trees with 200w replacing 10 trees. For Corn ethanol, solar produces 40 times more heat energy, and 160 times more EV power relative to the ICE engine use, not that LA hills are corn ethanol candidates.