I'd imagine the price per door could be equated to the price per bedroom in some hotter SFH areas.

Since I’d end up paying retail for the rehab myself because that’s not where my skillset is, my logic is my time is better spent elsewhere and the economies of scale I gain by using a large TK outfit essentially equate the the delta between any “deal” I may get on my own and the amount I’d end up spending as a small “mom-and-pop” investor to a contractor/crew.  

@John Kim there's a lot of truth in what @Greg Scott writes.We manage almost 700 doors, almost 100 of them being S8.The biggest mistake we see investors make is not understanding the Class of property they are investing in and not adjusting their ROI equations correspondingly.My manager Drew owns several rentals in the City of Detroit that we also manage.

Hello Storage Facility Owners and Operators,I'm reviewing the financials for some properties and seeking your collective wisdom on the operational benchmarks for running these facilities efficiently.We understand that, on average, total expenses for a well-run facility should equate to about 35% of the Gross Income.

I am merely pointing this out because I've gathered since becoming more immersed with BP that most investors equate completing a BRRRR as a success story and are prioritizing return of capital over other underwriting inputs that offers a more meaningful look into the properties realistic profitability.

How does a rental income of 1% of the purchase price equate to the property being a good investment? 

Also why do the number of doors equate to a succesful real estate business and what exactly does 100 doors translate to?  

I was the deal maker (connector) in this equation.

. - the other part of this equation is that I'd eventually like to buy another property where I am now (I'm currently renting). 

The issue you are going to run into if your lender hasn't told you already having the 3.5% is only part of the equation.