I don't think there's such thing as "total loss of neighborhood" in terms of home insurance. Your plumbing is still there. The land, streets & footpaths are still there; power can be restored to streets quickly, and a huge amount of employment and activity is generated in your devastated area.
The missing part I'm unsure about is where people live while their house is rebuilt. In a trailer on the property might be an option if you can't afford to rent somewhere else during that time? Perhaps the state can waive rates, or some other benefit to allow fire victims to afford rent while they rebuild their homes.
I’m sure it is possible to get coverage that would help you in this case but that goes beyond a standard home insurance policy.