A very rare thing to happen indeed Leon,, your bothers friend would/should be stoked, as you know I done decades of lightning and never jagged one like this yet, even now still rare considering every man and dog has a camera out during a storm
I digress and ponder if that house frame is wood or steel (being blue, could be treated ?) Either way, which would come off 2nd best if lightning hit it,, guess a few timbers be replaced easily than hunting the exact pieces of steel after they melt and bend, maybe