Organic farm/hire the laborHand picked cotton farm/hire the laborIf it's fenced, graze others cows and horses for a fee.Bring in some old "Stuff" to hide behind, and make it a paintball war park.Turn it into a vehicle wrecking/recycling yard.Set up hay bales and make it into an archery park, charge admission.Invest in some folding tables, chairs and tents and advertise it for quinceañera parties and wedding receptions.

 * It is pretty challenging to find some materials right now.  

Essentially it would work something like this…1) My LLC purchases the property 2) He will only charge me COST on the labor and materials (no profit or markups) which will save me around 30% on regular contract figure he gives me in my market which is very expensive 3) He will also make 300k of his own liquidity available to inject into the deal (I will put some of my own cash in and get a HML loan for the rest).

Where would you recommend advertising these?

I don't have the time, nor the energy, to buy study materials for the test, start studying, pay to take the test, take said test, find a brokerage, pay that brokerage, then start learning how to do contracts. 

Now subtract all your business expenses, especially advertising. 

I would like to know where I can buy building materials for wholesale prices or at least cheeper then Home Depot .

I bought a duplex in the Seattle market for $583,000 with a conventional 30 year home loan 2.99% interest rate with 10% down.My mortgage is $2800, I'm planning on renting the bottom for $2000 I am renovating both top and bottom with cash from a Equity Line of Credit I have with my stock portfolio through Morgan Stanley at a 4.5% interest rate.The total cash ill have into the reno (including labor, materials) is $140,000 ($100,00 of that will be from Morgan Stanley)My question is if I want to do a Cash Out Refi, is that going to change my original 2.9% interest rate?

It would just come down to your materials, your contractors, and size of home. 

Given how much big tech benefits from them, they aren't going away.The biggest issues are that FOB visa holders often aren't terribly familiar with American building materials, customs, and appliances and so often misuse them.