@John Warren - yeah, this home is down to the studs, so everything needs to be replaced.
Having never done a flooded home before, we learned something right away. Seems a lot of homeowners in this particular area (that had 4+ feet of water that took a week+ to fully recede) were unsure of whether the sheathing between the brick and the studs should be removed as many homes were mucked by untrained volunteers (like me haha - I helped muck a few in a different area in the weeks after the storm). So, a lot of people left it. Unfortunately, the sheathing that appears to be standard in these homes is almost like a drywall and should have been removed. In the home we bought, the studs, floors, etc. were clear of mold, but the sheathing that had been left was not. So, on day one we'll begin ripping that out and then remediate what's needed after. Luckily, I had a lot of wiggle room for the rehab cost based on the purchase price. But, now I am factoring extra cost into any homes we're viewing that left the sheathing.