They also inform me that the Water District is planning to force me to vacate, and remove my sewer line off their property.

I told them to remove their equipment at the end of this month.

Now, probably after a long and drawn out court battle, a plaintiff can probably get the lien removed as a “sham”, but a cursory examination by the typical plaintiffs attorney would probably not produce that conclusion.  

There will be some extra costs if you're offering snow removal.

You will likely need to pull out and cap the bathroom plumbing if the bathroom was not approved and remove the stove since the city is already on notice of it.

Maybe they are good people and want to pay for the damages and remove the remaining tree?

Prior to losing the home in foreclosure the previous owner had retaliated against the lender by cutting out most of the exposed electrical wiring and removing the heat and air units from the property. 

Lawn cutting/snow removal you can get quotes for, plan for some vacancy, property management software if you will use any.Hope this helps.

When you see what people do with old space heaters, guards and safety removed, plugging in several in one overloaded extension cors,... you can see where the concern is coming from.

It was built in 2002, and I renovated the entire flooring by removing the original tile and putting Vinyl flooring in, there is no carpet within the house.