Of course the worst case is actually getting lawyers involved and I wouldn't go that route I just wanted to make the basic contract law argument about the PoA's limitation. 

They can handle time-consuming tasks like lease renewals, tenant correspondence, and basic admin work.

It covers a basic human need (shelter).

They can change terms basically at anytime before closing for non-owner occupied - is it good for the reputation - absolutely not - but it does occur.

I am basically always looking to buy if it fits my buy box. 

You can also create a basic scope of work and get ballpark estimates from contractors or use cost-per-square-foot averages for your area.To determine ARV, look at recently sold comparable properties in the area that are similar in size, style, and condition to what your property will be post-renovation.

ya were we live ( personal resi) we have humungus doug fir trees 100 plus fee tall basically surrounding out lot and if one of those falls on your house it can destroy the house and if your really unlucky it can squash you..

It will familiarize you with the basic terminology and benefits.

Quote from @Nicholas Dillon: Basic math on a napkin.When you cash out the equity, you borrow it from the bank.

It seems like it basically up to you to do the math on how much more you will potentially make selling each unit individually and then deciding if that extra $$$ is worth the number of extra hours you will spend.