I can answer that one. 

There are enough threads bouncing around on Arbitrage.

One way: price.

I have done it successfully on my last 2 buildouts, maybe 3, but only because I was able to acquire the properties at a very low price and I did all the work in-house (myself and some hired hands on staff).

If it a zoom group, local group or "one on one".

I currently own one home in NY as LTR, one STR in SWFL but am looking to expand my portfolio.

Rest assured @Tre DeBraga you are NOW on the right path!

I'd bring island out a little more. my advice is make sure all rooms are 110 sq ft minimum. some of these look super small. we build a very similar one in our market.

- Renting it Out: The likely rent I'd get in this area will cover half my mortgage payments at the moment- Add Square Footage: Taxes will likely go up significantly- Build an ADU: Overall ROI will likely not offset much since it'll still be counted as value tied to the one house- Selling Off Land: Sits on .5 acre that I might be able to sell.

The more common one is a flat value for the ADU, like they would for a pool or another bonus.