They show gallons used on dial like an odometer, so we just read the meter and calclate the percentage of total usage by each side, then back bill the tenants for the water bill we get.Example: 12,000 gallons. 

You want to see the Seller's Schedule E for the past 2 years, minimum, to know what the real rents and real expenses are. 

I've never had a problem with guests getting into trouble with the wifi usage.You can control a lot with your router.When I had Satellite internet I flashed my router with custom software so that I could throttle users data after so much usage because I would have someone stay a weekend and use up my while months worth of data.

And then, most importantly, start to go see those houses in person when you get a text or e-mail regardless of whether or not that particular house meets your criteria on paper.

To offer some answers to your questions:Energy usage of course.

With all what is going on in the online business and e-commerce.

I just use Quicken, set categories to match Schedule E, then use tags to designate which property.

We can assume the smokers are putting the cigarette butts in the drains and the wipes are coming from the parents, but people always want to argue that you can't prove any of that.

2) Only looking for an accountant to fill out my Schedule E and Form 1040 for CY19.Are there any other tax forms I should be aware of, besides the two listed above?

@Donald E Appleberry thanks for the reality check any peice of advice helps.