Multiple recent studies supported that they remain relevant and practically functional in the Orlando property management market today.

Be advised, though: Some seller financing offers may function more like rental agreements than traditional mortgages, and offer unfavorable loan terms that offset any initial benefits to be had.

As for your principal residence, it sounds like you are in a "Functional Obsolescence" issue. 

I would make sure it is clear that it is for the gas, and then anything that is not functional that could not be tested because the gas was off.

I come from a more institutional level background (most of my career has been selling land to the national homebuilders), so I understand the mentality and how the larger companies like AmericanHomes4Rent, Invitation Homes, et al function.

Functionally, it feels like we live in one unit of a duplex, but it is technically still a SFH.

If the portal had a maintenance request function,  I'd list the instructions for that component as well.

There are several threads about the DST here on BP, but it functions similarly to a Series LLC and is viewed as an estate planning tool, therefore not subject to the tax.

I never have understood maintenance/cap ex as a function of rent.  

Property management can fit here, depending on the function and cost basis, or maybe it's a flat rate and there-in a fixed cost. 5 Reinvestment: The first and most important, often over looked especially by novices CAP-X; this is your known items that wear out over extended time, such as a roof, furnace, water heater, flooring, counter tops, ALL the things.