I'm sure there are RE meetups & groups in CLT, so try to attend a meeting to meet other investors who may offer more specific strategies or have properties they are looking to unload themselves. 

What I’m wondering is if I could list the materials bought such as lumber for subfloor, flooring, cabinets, toilets, and appliances as “Depreciation” or leave it as “Supplies”.

Then you better hope you can unload quick or else that float number will rise. 

When I need to restock one of the smaller fire pits, I cut a load of wood and put it in my dump truck and then unload it by the pit.

Garrett, go to your local lumber, doors, windows, etc. supply store (not a HD or Lowe's, of course) and ask at the front desk if they can recommend someone. 

The seller gets to unload the responsibilities of owning the property itself and starts to get a return again.

That way, even if you default, they've got a property that they can unload quickly for at least a little profit.

And another person with two acres of vacant land in San Francisco directly adjacent to a city park that can't even unload it for $350k."

I have no doubt delivered log prices are up as lumber as we know has sky rocketed but I have not seen that be a direct correlation to the delivered log price its the mill and the lumber brokers that are killing it.. 

I think it depends on the individual person's situation, but in hers, the listing is and remains expired because the realtor didn't perform (twice) and she is looking into other options to unload that place.