Then on the repairs, the turnkey property provider, will more than likely overcharge for both legit and bogus repairs.  

Not to mention the people they send out overcharge.

The overcharge for products that almost never work.

I appreciate the responses, since it is my suspicion that I've been over charged and they're trying to pull one over on me.

Do not get me wrong, even a single firm lawyer can grossly overcharge.

The definition of insanity is doing the same thing over and over again that is not working and expecting a different result.Of course tax assessors over charge and of course they make you fight to the end before they do anything because they know most people complain but will quit and not follow through.

Of course, as with any profession, there are bad eggs out there that are either incompetent/lazy/overcharge. 

If you over charge him per your assessment give him and annual rent credit back, whatever you do don't underestimate and then go back to your dad and ask him to cover your water bill!

I didn’t try to engage on being seriously over charged for the repairs, or the tenant’s refund of their security deposit.

They skimped and overcharged on repairs, cannibalized parts from other rentals.