They are separately metered for gas and electric and I would pay water.

Should there be more separation? 

@Jeff Dulla  I have a portfolio of properties, each owned by separate LLCs setup at the end of 2015.  

Many hedge funds found this out as well.. they first wanted the homes rented and performing then realized the providers were too aggressive putting tenants in .. then they wanted them vacant so they could vette the tenant and have their own management.. the Aussie companies I know went that route as well. they wanted to separate management from the provider.. either way I look at investing in rentals in any given market however you come by them as wanting to buy homes in areas that are receiving the top 20 to 25% of the median rents...

The primary structure you want is to keep flipping and rentals separate.

They will then hold a separate brokerage trading account to keep contingency capital working productively.

He priced out to run separate boilers and water lines for each unit so everyone would be paying their own heat and water would be 30 K per building at three buildings equals 90 K

On their tax returns they had Line 44A blank, so essentially $0…but then later on they listed vehicle miles in a separate line item.

They're of course related, but actually separate.

One approach I am strongly considering is a house with a separate living area, mother in law (MIL) suite, additional dwelling unit (ADU), etc.