So, for a $100,000 loan under this program, your total loan fees to us would be $3,500.

At the moment with 3 rentals (6 total units), I have one account and a credit card associated with it.

Totally agree with your approach!

We had a walkthrough which I always offer for obvious damages (ie holes in the wall.).

After a lot of back and forth, she proceeded to share a few receipts, with multiple duplicate receipts, that do not total to amount that I was charged on my card, and there are discrepancies in the charges such as multiple mattresses, multiple coffee makers, 116 towels, etc.

The developer makes their money on a one time developer fee of 10% of the total project cost.  

Good call, Noel—licensing and insurance are critical, but in Tennessee, a contractor’s license is generally required for projects totaling $25,000 or more, including labor and materials (See Tennessee's licensing requirements).

Challenge: It's in a neighborhood (no HOA), and renting the entire property (sleeps 25 in total) caused problems in the neighborhood, due to noise and parties – so we only rent the separate cabins now.

Refi after construction.These numbers consider only the portion of costs of the HEL attributable to the land purchase, not the payoff of the HELOC (which we took out to buy the Seaside condo).Cash In:                     $66,166 (Cash, 1 year of debt service of HEL, debt service of const. loan, furnishing)Amount Financed:      $548,000 (home equity loan + construction loan + closing costs)Total Cost of build:     $614,166ARV:                               $850,000 (or rather "after construction value")Refi                                $637,500 (75% of value + closing costs)                                        Cash Out                       $89,500New payment             $4500/month (54,000/year)Estimated Cash Flow (pre-tax numbers, so actual mileage may vary)airBNB year 1:            $70,000     (net income $16,000)airBNB year 2:            $100,000   (net income $46,000)airBNB year3+:           $120,000   (net income $66,000)ROI (construction year):    0ROI Year 1 of STR:              24.2% ROI Year 2 of STR:              69.5% ROI Year 3+ of STR:            99.7% Did I calculate these ROI numbers right? 

Totally agree!