With the most difficult buyers it can lead to last minute re-trades over inconsequential amounts of money but is just a pain to deal with.

Getting needed coaching from professionals who had made deals was difficult and the two deals I invested in were very poorly managed from the beginning. 

It is one of the reasons rent by room is more difficult to manage.I have no experience with rent by room and the associated common space.  

Your opportunity is also what's difficult, having virtually unlimited options :)  

It's difficult to see how a tenant will be after screened and signing a lease.

It's difficult to see how a tenant will be after screened and signing a lease.

As far as property management goes, I found a lot of the easy-to-get property accounts are the most difficult to collect and manage. 

The California government will deal with the damage the same way all governments do , they will find a way to raise taxes or get the Feds to pay for it ( that will be difficult with the new administration ) Here is what I find ironic , California has C.A.R.B. to pass regulations on vehicle emissions .

@Chris Kay finding a quality, cost-effective contractor is extremely difficult:(There are thousands of contractors that are great talkers, but rarely perform within budget.Standard bait & switch is to lowball a bid, then once they get started all sorts of things "pop up" that somehow their bid didn't cover.

The interface is not very user friendly and things that should be obvious are difficult to find and take figuring out.