It depends on your goals but I and many of my friends and clients started with house hacking and then used the equity to buy out of state.

I think it all depends where you are starting in your career.

(This, of course, depends on one's assumptions about future appreciation; the prospects of which I have my doubts.)

A great PM will take 10% of your money every month, but they can also add value to your property depending on what they do and how they manage.

Will depend on several factors like the type of property, type of tenants, your risk tolerance, other assets you own, your estate planning, laws where the property is located, etc.

They need to do all their due diligence including understanding the value that will be added by the ADU, the finance options available, the consequences of adding the ADU (rent control, property taxes, rental limitations, etc), etc.Good luck As with all things, it depends on the investor and the equity.If they are able to leverage existing equity to buy it under a HEL or HELOC, then they are adding equity with no out of pocket expenses, and adding immediate and longterm cashflow to existing stock.We like ADU's because there isn't more land being created in our city that is landlocked...but there is more density available to those with large lot under-utilized sfh.In my market, it typically costs $2 to add less than $1 of value on single build ADUs.  

I guess it always depends on how much money you have, what you want to buy and what your strategy is. 

They can depend on the person and the property along with a multitude of other factors.

"East" Nashville can encompass a massive land mass and it all depends on who you ask what "East" actually means.

Really depends how you want to structure it.