I actually think it's very uncommon and most people buy 100% in cash.As I've shared many times, as much as Costa Rica is a great place for a holiday, I don't think Costa Rica is the place to make big money in the region. 

Steeling materials and even tools isn't uncommon when using new guys.I am glad I have my guys (and semi-reliable backups).

A fun and sobering read about the confusion surrounding Emotional Support Animals:http://www.newyorker.com/magazine/2014/10/20/pets-allowedI can confirm that the author's experience is not uncommon.  

Things things are easy to miss, because I think it's rare that ALL of those things come up, but on the same coin - it's not uncommon for at least ONE of those things to come up.I'm adding your items to my due diligence checklist.

In my area, it is very uncommon to have Multi-Family tenants take care of the grass or snow.

In Washington it is not uncommon to have problems when it is discovered that unpermitted work was done.

(In Baltimore unpaid water bills are lumped in with unpaid property taxes – it is not uncommon to see overdue water bills in excess of $10,000+). 

It's not uncommon to see a property from one of these wholesalers offered for $90k, when it's listed in the MLS, and now Pending/Contingent, at $100k. 

In the Bay Area it's not uncommon for traditional market rents to be half or less what furnished rentals go for.To keep you from getting jammed up when it comes time to get another mortgage & keep things Fannie Mae Friendly (can I trademark that?)

It is very uncommon for a Norwegian not to pay their rent on time.