All the proceeds from the note sale plus the cash down received will be the net proceeds of the sale that are applied to your replacement property acquisition.   

The some concept applies to interest rate although less so.

is it as simple as working into any bank and apply?

Owning Property" is sometime loosely applied.  

However, they're just letting you know that IF someone is a Service Member, the Service Members Civil Relief Act (SCRA) could apply and affect the ability to do things like evict, foreclose, etc.

I want to be a successful young head turner in this industry while still applying the utmost ethical practices.

Each deal I do, the NW impact is always considered in the short term but I've never applied the impact to long term retirement goals and costs associated as we age. 

Or does this "average mortgage" only apply to houses with a mortgage?

@Carla Harris, the borrower's credit is always a consideration when applying for any loan.

I have applied to many, many real estate investing companies in the area and sadly I am feeling lost as to what direction to move into.