The volatility of the markets and constantly changing guidelines have been the largest pain points from what I see.  

They need to hear that they can make a change if they are willing to push through the pain of being uncomfortable (I agree with @Cameron Tope that most people don't want to face the fact in black and white!).

Appraisal Issues: -A separate issue is that there are two block garages on the property.

Pain in the *** factor ÷ ROI.

I've got architectural bids from several companies and that is where I felt road-blocked due to lack of info and no experience on how to proceed.

I havent had any other experience in the US and with turnkey companies before, I had no bias versus turnkey companies either unlike a lot seem to have in the US so I came in with a clean slate but a very, very carefull and critical mind (someone said "very on the ball", Engelo would say "Pain in the XXXX"), but if the perfect turnkey company existed I believe they would be very close to what OCF is doing (remember that I'm French and in our culture, nobody's perfect !!).

for me it gets tougher and much tougher as I get older.. aches and pains are far more frequent.Living in the Napa valley for years wine was a daily event. and of course a martini before the wine.

You're not "prohibited" from claiming bonus depreciation this year, but the resulting loss will probably be blocked and carried into the future years.

If you pick a bad tenant in any state, it's going to be a pain to evict them and when you do, they can always put rocks down your toilet or cement.

., it seems to be a fine tool.But if you are a real estate investor with a few properties to track, it's really painful.