If you absolutely have to you can determine how much you could sell the home for as-is (be conservative and subtract expenses involved in selling).

FFO is calculated by adding depreciation, amortization, and losses on sales of assets to earnings and then subtracting any gains on sales of assets and any interest income.

Subtract this from the total contract price and both sign.

Once I subtract all costs, rehab of $75,000 and add my small Wholesale fee, I’m in the negative in my offer.

Then subtract the cost of construction in order to build it.

If you're not sure if it will cash flow, then calculate it out:  Take the rent and subtract the monthly insurance, taxes, mortgage Pmt and what is left is your cash flow, positive or negative. 

I realize that 24% of my salary is subtracted for Federal tax, and even more for the state, and city tax!

Take your ACV, subtract what needs to be done to complete construction, and that should be the value in its current state.

I'd rather just make enough money to reasonably pay for them regardless of what happens).Step 4 - I subtract Step 3 from Step 2 to get my expected yearly net income.Step 5 - I divide Step 4 by Step 1 to get a rough idea of my best case scenario of my return on the cash I'm actually out.  

For that you will take your purchase price and subtract out the land cost.