This means we network we meet all the "big shots" , self made ones and the ones who inherited it all.

I love to hear stories like that and wish I was brave enough to tackle 48 units in one shot.  

Want to give it another shot? 

Real Estate usually beats the stock market once you factor in "leverage" which is exactly what you are doing by getting the property financed.That's a long-winded way of saying put as little down on the property as possible while still making sure it comfortably has positive cash-flow.Here are 2 scenarios assuming you can buy at $285K1. 20% down @ 4% interestDown payment = $57KNet Operating Income = $1620 per month (per the screen shot you posted)Debt Service = $1400 a month including taxes and insuranceCashflow = $220 per monthCash on Cash Return = 4.6%2. 10% down @ 4% interestDown payment = $28KNet Operating Income = $1620 per month (per the screen shot you posted)Debt Service = $1662 a month including taxes and insuranceCashflow = -$40 per monthCash on Cash Return = 0%After running these numbers the triplex doesn't really look like such a great investment to me.

Sign a guarantee with the code officer stating you promise to demolish the inlaw suite and not rebuild (long shot since sounds like you do want to rebuild and they know it)3.

Billionaires don't have to worry about an unexpected medical bill bringing you right past your deductible and out of pocket max in one shot (as we did in JANUARY last year...thanks to a hospital visit.

I'll give it another shot.

I have never tried to be such a smart alec so as to draw a smiley face on a napkin, call it "artwork," and have someone borrow funds with the napkin as collateral, even though the guideline literally cites "artwork" as something you can do this with (give me a call if you own a Picaso, and we'll give it a shot :P ).

At this point I'll likely be taking a shot in the dark when running my own numbers in the calculator, because I have limited construction experience from Habitat for Humanity.Do you have any tips on figuring out what a close approximation for each expense would be?

You can give AirDNA a shot, but the best tool to use is Airbnb itself.