|Quoting L-188 (Reply 1):|
It isn't the condition of the wood that will rot out the house. I would worry more about the nails holding it together.
... and the electrical system, and the heat/AC systems, and the flooring, and the interior wall material.
Most of the structures that you are seeing on TV
with several feet of standing water in them are destroyed and must be torn down. If you expose a structure to inundation for a short period of time, it can be repaired. These buildings will have water in them for days, or even weeks. They are trash.