Could there be other problems not caused by trees?

Unless you caused AT&T to go on strike , tell them no .

Any time the tenant causes a problem, they should pay for the solution.

It was pretty upsetting the PM didn't do a good job communicating to the plumber the washer install is tenant's responsibility, nor did they do a good job explaining what happened to cause a 6-hour job at $1100, or try to lower it before charging me.

I planned for it financially, but it's a headache for sure. your rent is too high if they are sitting vacant.. there is more inventory than butts to put in them.. therefore competition for the few qualified tenants this will cause rents to go DOWN.. if a property is not rented in 2 to 4 weeks your rent is too high .. this is one of the major risk factors that many dont see when buying in a subdivision of group of ALL new rentals..

I don't mean to cause offense - this is me just asking a genuine question.

Premises liability claims are one of the most common causes of action a real estate owner will face.  

IF you were to renovate a non-conforming unit, that unit would now need to be brought up to code.When or if you rent out the unit, you, of course, run the risk of the tenant calling the city and saying the property isn't up to code, which would, in turn, cause an inspection by the city and likely result in some violations that would require you to bring the unit up to code.These types of units are ALL OVER the city of Chicago and be rented out on a daily basis, but there is still clear risk associated with renting them out.

Like has been already said, if you need to save the cash when starting out, it's not a bad thing to suffer a little for a good cause. 

Inform the tenant that their dog is causing a disturbance and that they have X days to rectify it.