First to let them know you can and have helped others through this difficult time, you are an option to unload a possible burden.

SFR has more supply and is easier to unload and diversify.

Same for general building material (e.g. lumber, drywall, etc.).

Purchase price: $30,000 Cash invested: $6,000 Found a landlord that is looking at unloading his properties.I am trying to figure out how to purchase everything he has.He is selling a few each year, so I am trying to figure out the deals.

I do get quotes for foundation materials/labor, lumber, framing, siding, siding labor, doors, windows, driveway, and roofing before starting though.

We have our bins ready to go when the dumpster gets to us. 27 gallons is a good size because one person can still move them if they're half-filled with plaster debris/demoed tile/concrete rubble, 3/4 filled with drywall or other chopped up sheet goods, or fully filled with random cleanout crap/lumber.

I know a property owner who lives outside the US and wants to unload his duplex and I'm trying to find a way to buy it.

With skyrocket lumber, flooring, paint price rises it does not go a long way. 

Attic area is partially done (no electrical, plumbing, etc, just the basically the lumber is put down but that could be turned into a one bedroom,kitchen,bathroom rental space as well, but again I was told not to put anything decent in there if I buy it.)

The seller knew he had a dog to begin with, and was more than happy to unload it on you.