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.

Created a functional home that was more modern style compared to the 1986 look it had when we purchased it.

It would need to be installed and then the property re-inspected to make sure it is installed and functional.  

There are many functions that are pretty simple, and a house hack spreadsheet wouldn't be too complicated to make.  

If you are just looking for money transfer function similar to Venmo without the fancy tenant functions/management, then I think it is a good alternative. 

I check it on annual inspections for functionality.

Think about that, it's so damn complicated it requires a chart for just 1 function of the regulation. https://www.stpaul.gov/sites/d...Here is the link on there rule making and implementation for '23'.

Remember that price is a function of demand.

He won't explain how difficult it's going to be to turn this place into a real moneymaker as a beautiful, welcoming, highly functional flip, the problems with the idea and their possible solutions.