It looks more like a long driveway but there are multiple properties using it.

Also, for those entities engaged in such lending, the regulatory demands have grown substantially since the inception of the SAFE Act and the Dodd Frank Act which created the CFPB that has substantial regulatory control over their operations.

How do you fund multiple properties?

I have laid out a rough draft plan that should allow me to acquire 35 rentals ranging from purchase prices between 65k-100k by the time I turn 31 years old with rental rates ranging from $850 up to $1300 a month (putting at least 20% down on each home with a conventional loan, depending on the condition trying to get a conventional rehab, and using the positive cash flow to pay down mortgages/use towards down payments on more rentals) I have read multiple books from millionaire investors such as Manny Khoshbin, Donald Trump, and the like.

FYI - dont post the same question to multiple threads. 

I want to know how investors are able to buy multiple properties.  

The last thing you need if you're doing multiple flips is to have inspectors looking for your jobs, knowing that you're doing them illegally. 

Multiple sources online and the first contractor recommended to buy a system online and then have contractor install it.

A commercial lease for the ground floor tenant would typically extend for multiple years with "a high quality" tenant wanting more for less. 

Consider getting a business account with them if you plan on doing multiple flips.