You will have to confirm this with your builder or check it out yourself; however, I am told that the reason houses hit by lightening all burn to the ground is that our natural gas lines run through our attics and when lightening hits our roofs and starts burning, the plastic couplings on the gas lines melt and whooooooooosh.
So, I guess, if our house is hit by lightening, the first thing to do is shut the gas line off....before you retrieve your belongings.