How can I charge my tenants for electric and water usage when it's all on one meter?

Previously he also complained about us not weedwacking (which we have been doing) and fall leaves getting into his garage that brought bugs.

The real estate has been good to us, and to give you an idea, I'm going to be applying for a continuing education course in refrigeration so I definitely see value in that - however in my case I see specific value to use the knowledge that I'll gain for my (and my family's) own purposes, given that we already have a rental portfolio and some AC needs in the docket.I think there's a challenge in finding meaningful career opportunities within the trades for many, many people - as the training and cultural environments within most 'service businesses' such as an HVAC, electrical, plumbing, etc can be desolate and make certain folks turn to the 'dark side' of business. 

We improved our due diligence when it came to plumbing and electrical on older building.

It needs major rehab anyway so the water amd electric split would be the major expense.i plan to rent the upstairs LTR, and possibly STR the downstairs plus use it myself when I am in town (it is near my inlaws).Question: Is it worth the investment in turning it into a true duplex, or should I just include utilities in the LTR rent and leave it as is with a solid locked door between the up and down?

What is he estimating for demolition, for plumbing, for electrical, for painting, for HVAC, for cabinets, for appliances, for flooring, for the roof, etc.?

http://dreamdesigndiy.com/easy-electrical-outlet-c...If you already knew about this, I am very jealous of you and the time I will never get back in my life.  

@Christian L Babcock, unless you're in a very temperate climate, I wouldn't put in electric baseboard.

I have been stressed about finding the time to do electric work and new flooring.

This is a mother-in-law / guest wing of a custom built passive home (self sustainable from solar,high efficiency electric/insolation) very pretty, and feels like you are in the country for sure with some mountain views on the clear days.