If the tenants are paying for water on a 1-4 unit, that is a vastly different methodology used for the apartment complex owner. 

My goal is to build a portfolio using the BRRR methodology and position myself to where I can buy my own home.

Whatever underwriting methodology you are using - what does it say the thing is worth?

I'll just say that the way you carry yourself professionally or not has a lot to do with any 'miss-understandings' in regard to your vendors 'wink-wink' pricing methodologies. 

See also https://www.biggerpockets.com/forums/80/topics/291751-what-macro-data-studie-should-biggerpockets-provide-to-investors Some places, Garner included, have some skewed numbers depending on your analysis methodology.

However, its important to think about strategy and methodology, because as basic processes become automated, you begin to see how much more of the entire investment function can be automated.

They are also taxed and treated differently as such the income and expense methodology may be different.You may have to reach out to an accountant and mention information such asWhen was the property purchasedWas the property ever advertised for rent and also suitable for an individual to live in the house?

His methodologies are antiquated and he has not updated the text to conform to today's market.

It is not unsupported if it can be repeatedly demonstrated how their methodologies are spurious and their outcomes are empirically false.

So much wisdom on here.Contractors are tough to find, vet and manage.Only one of the pillars of the "core 4" methodology but so much can go wrong there.