Alternately, partnering on longer-term real estate investments offers distinct tax benefits and greater returns, that the two of you might consider.If your dad has idle money in the bank, or perhaps in a tax-deferred or tax-free self-directed retirement plan, an 8% - 10% loan could make some sense, but not if he has to borrow the cash.Jeff S. – Private Lender in Los Angeles

That seems to be a key area of misunderstanding here, the distinction between proper wholesaling and unlicensed brokering.

Does anyone know of a good broker that I could use as a international student living abroad with a Turkish bank? 

Obviously, there are less home buyers buying fourplexes rather than SFR or duplexes, but I'm not sure why the bank cares as long as it counts as a comparable unit.I'm not trying to sound contradictory, I just still haven't fully understood the distinction yet.  

It really needs an in-depth discussion with a tax expert specializing in real estate.There is a major distinction between a developer and an investor for tax purposes:Developer buys, subdivides, maybe builds and sells.

Agree with @Carl Fischer that you should engage a tax CPA or EA to examine your unique facts and circumstances...However the distinction between who owns the roof is important and determines tax treatment. 

Those are 2 very distinct things.

In the eyes of the law, there is no distinction between her unit and mine. 

It also make a more clear distinction of personal business  for all sorts of reasons.Dan Dietz

“The courts apparently agree that the meaning of the words "trade or business" is uniform throughout the Code provisions here considered…No court has made an explicit distinction between a "trade or business" authority under one section of the Code and another under a different section.