You’re kidding right? That place is freakin’ awesome :-)
Plus, you knock it down and the coastal commission might let you build a subterranean shack in ten years of wrangling.
Apparently you've never lived in a place like this. It's aged. It's ugly. It's unusable.
To renovate and leave it looking like it does would cost an arm and a leg. It would still be cheaper to tear it down and rebuild it just like it is than to renovate.