Home additions are uncommon where I live now, people just buy a bigger house.

Our guest speaker, who invest all over the country, said this is not uncommon.  

Your calculations seem to be correct. 5% return is not uncommon but consider all the tax benefits and appreciation of the property.

It isn’t uncommon to see the markets freak out a little during the uncertainty of a presidential election.

@Shweta Patel it is not uncommon to have singlewides without title.

There is HUGE money in certain Timber deals... 6 figure returns are not uncommon at all..

It is not uncommon for Landlords to go for 2 months out of the year with no Section 8 Payment, or be forced to reduce what they charge by $50.00 to $100.00 a month if the City decides to (unilaterally) reduce your Section 8 voucher. 

It's not uncommon for the first 2-3 years for a business (and for most newbies, REI is a business, not passive investing) to show little to noprofit.I'll share my background and maybe that'll be encouraging.  

Female investors are uncommon, especially ones that are the primary investor or taking the lead. 

@Mike Dymski that is a great point, unfortunately having worked with many 401k plans, it’s not uncommon for individuals to take a loan from their employer plan and then struggle with paying the loan back which either leads to them taking another loan or turning the loan into a distribution and having to pay the penalty plus a large source of additional income for the year that might alter their tax bracket.