If you don't have good numbers on your deal, you're dead in the water. 

I would like to get a list of all county properties that have had water/sewer services shut off for more than 3 months." 

Call the local water authority and get the last year's bills.What about lawn care, snow removal, and admin/professional fees?

They were in the deal, come higher or hell water. 

I am seeing people pay 275k for dilapidated 4 families with 50k deferred maintenance renting for 625/mo/unit and LL responsible heat and water.

(Water left on etc).

With the water supply lines underneath the home, it's important to wrap them in heat tape and make sure the skirting is always secure.

This costs about $75 per month, or, if I can get one of the tenants to allow me to set up my "Automation Hub" (I use Smartthings HUB in my setup), I will give the tenant $25 per month towards their bill.There are many ways that Smart Devices can help, not only in the case of smoke detectors.I have motion detectors which turn on and off lights, cameras that record to the Internet, leak detectors that tell me if there are problems with my basement, particularly if one of my equipment like a Hot Water Heater or Hot Water boiler is leaking, etc.In fact, I normally buy properties in transitioning neighborhoods, capturing the appreciation as the neighborhood gets better.The Internet Cameras became very important in this situation for 2 reasons:1) I kept getting sanitation tickets for dirty sidewalks.

Long play for appreciation seems ok, many people on west coast do appreciation over cash flow.you might want to plan more Maintenance costs depending on age and condition of roof, siding/paint, furnace, water heater, plumbing ectProperty management for 8-10%, unless you will manage yourself

Hopefully the information warning will be enough to get them to shape up before I have to move into more legal waters.