This is an unusually good place to make money if you are methodical and somewhat consistent. 

I should add that we use the BRRR method with our rentals.

The answer lies in many different methods and I would suggest 2 things:  Begin a new post with something like "Best ways to find a property" and see what kind of responses you get.  

Once the property is under contract I can have the property inspected and I then use the more accurate method of individual CapEx item evaluation.  

If this opportunity were to come to you, what method(s) would you use to structure the financing of this "international" purchase?

There are two methods to do this.

In practice everyone must test and develop their own methods based first on extensive research.

Would you generally recommend a BRRRR method over a fix and flip for someone looking to dedicate their whole career to fix and flips or mainly for someone looking to make the most long term profit? 

. , The legal requirements for a bedroom are 7' or more ceiling height, 2 methods of egress, and at least 70 sq ft.

The other poster was right in that the prior owners probably had the homeowners and seniors exemptions, but there may be mitigation methods.