This happened in a 50k people town where my father is from in 1982 with a BIG flood that destroyed the town land registry documents (among a lot of the town). Since he's a lawyer, had first hand experience and I was always curious I asked many things about this a while back. Basically, what happened is that they rebuilt it from proof of ownership and testimonies of the people. You can never get to 100% recovery like that, but everyone knows who their neighbor is, at least in a town that is small like this.
So they rebuilt it first from first hand proof, then by testimonies, with a period of counter claims available IIRC. For sure there were some false claims, but given the magnitude of the disaster, this is the best solution within that context.
So they rebuilt it first from first hand proof, then by testimonies, with a period of counter claims available IIRC. For sure there were some false claims, but given the magnitude of the disaster, this is the best solution within that context.