Right now I just have gas, electric, water, tax, insuranceS bills, and about to open all those also at 2nd property cash-closing on later this month.

You couldn't pay me enough to manage someone else's SFRs with old HVAC, plumbing, and electrical!

My wife and I still laugh at ourselves over how we broke down everything from cell phone plans to electric bills to what we cooked for dinner.  

Electricity, Gas, Oil, Water, Sewage, & Utility Billing.Contract Services $200-400 per door This could be Landscapers, Pest Services, Trash Services, and Security etc.Payroll $700- $1000 average is usually $900 per door. 

You also want to set the tone & precedent from Day 1.Definitely try to find out if there are any major electrical/plumbing/roof issues, but other than major mechanical items, I would not ask too broad a question.On the shower head, often it is just some calcium build-up inside the showerhead, and simply placing the shower head in vinegar for several hours will do the trick. 

motion sensors, a bath fan timer, turn the lights off once you are in bed as opposed to having to get up to do it.in china, when you leave the hotel room you pull the room key out of this device and the electricity in the entire room shuts off in 5 mins. the fridge stays on. america is never going to adopt this option. lol

Gas or electric heaters , what type of water , hard, soft , acidic .

Capable of evaluating the possibilities of structural or electrical damage as well as any damage to the plumbing of the house. 

Hello Chris, if you are talking a basic cosmetic rehab (floors, paint, cabinets, counters, plumbing and electrical fixtures .... etc) $20 per sq ft is common.  

Say if I run an outside electrical, exposed pipes need to be rigid if above ground, and PVC for below, but it doesn't say I cant run them all above ground instead of embedding it on the ground, so I could.