You're paying for the holistic experience. 

Another is out of state, but a dear friend who's soon-to-be retiring on the cash flow found them and she and her husband have been really happy.These folks are financial planners -- bigger picture, holistic financial planning.if you want to focus on managing your real estate portfolio (strictly), your best bet would probably be a team approach: an investment-focused real estate broker, a lender who understands investing and (especially in light of Portland's current landlord tenant laws) a property manager. 

@Ashton LevarekMy two centsReplace HVAC with window AC unitsGamble with home warranty Try holistic cheaper non toxic approaches for pest control Diatamecious and Sticky pads

Just to play the devil's advocate...I get what you're trying to do, but a 100% allocation to (presumably US) real estate isn't very diversified at all on a holistic level.I'm a big proponent of a strategic mix of real estate, equities, bonds, precious metals, and/or cash depending on where we are in the economic cycle and what the intermediate term outlook is. 

So it's less a question of percent rules and cash-on-cash and more a holistic look at how much the househack lowers your cost of living and builds equity at the same time.Is this helpful?

Holistically, I'd favor progressive tax brackets and no loopholes.

So if you're paying 64K against the principal and subtracting 30K in interest that's a significant savings when looking at it holistically. 2.)

You need to consider the holistic picture associated with each structure to determine the optimal one...annual compliance costs, US income tax exposure, US estate tax exposure, and taxation in your home country. 

For someone like yourself that's being smart and looking at things holistically, there can be several things to consider.

You need to consider other issues, as well:family dynamics, including potential frictionparents' views on owning this property and inheritance in general (some older people would consider setting up such trusts as wise and loving, while others could consider it equal to being buried while alive)estate planning implications if your parents have high net worthprobate implicationsyour parents' eligibility for government programs, including Medicaid long-term careexposure to creditors if one of the siblings has debtand more that I did not mentionAn attorney or a financial planner specializing in elderly issues would likely be the best source of a holistic advice