Now, three years later, my tenant reported cracks in every room—paint cracking and full-line cracks in the bathroom, living room, and bedroom (walls, ceiling).A drywall contractor looked at it and said it’s normal wear and tear, but I’m concerned since it’s in every room.

I'm not too sure about the actual walls though.

Yes it's a huge problem.You should fix this correctly now.Open the walls and put in proper sound reducing insulation.

None of the walls I'm shifting around are structural so no issue there but from a leasable / liability stand point what are your thoughts?

I see some larger single family homes in areas that appear to be zoned R2 that, at least from a physical perspective, seem like they could work for this.

The wall street journal published a piece suggesting home prices are overprice and will likely fall. 

Sheetrock laying on the kitchen island to make walls all the way to these temp walls.

Appears the guests may have left the faucet "on" when the pipes were frozen and when no water came out, forgot to turn it "off".What may have caused the overflow of the sink is maybe the drain lines were also frozen?

Walls were not far enough along to be stabilized, so the wind knocked them down.Nov 21st - New block not delivered yet.

The Registered Agent will record the documents on your behalf so only their name and information appear on the documents.