I own property and I like to sleep with a nice conscience at night, that is why I've always practiced first come first served.

It takes a lot of practice though and touring local houses to get good at it.  

But, yes, billing back tenants for unseparated meters is a normal practice and you are within your rights to either ask for a percentage repaid, or else tack on an increased rent (like a budget plan) specifically for utilities. 

I'm interested in Buy & Hold and BRRRR particularly for duplexes or multiplexes and was just checking around on Realtor and Zillow for starters to practice deal analyzing... seems like, at least for duplexes, there might be some pretty decent deals to be had.

I practiced keeping my money by keeping my standard of living below my means.

I haven't ever had anyone say, oh because you are a Realtor, I don't want your money.I got my license because I felt a need to practice what I was being preached and to me I was always a "wanna-be" until I pulled the trigger.

From Denvergov.orgPermits are required when your project includes the following: Alteration to the existing floor plan.Structural changes, such as adding or removing doors or windows.New or rerouted ductwork.New or relocated electrical or plumbing fixtures.NOTE: If your project changes the use or occupancy of your home or creates an additional dwelling unit without altering the exterior of the structure, see the project guide for adding a new dwelling unit. 

His story, which I believe, is that he sold his house, (which his sister and mother were living in), made a profit, acquired a new house and wanted to relocate his mother and sister.I have met with him, I have had a lengthy conversation with him and I frankly believe him.I guess where my question was trying to lead was: how do I construct the lease to include him as the payee.

But for all practical purposes, this looks like it may be promising.

The houses I have were bought new (at retail) as primary residences (for myself) and then converted to rentals when I was relocated.