It is not uncommon to see tiny bedrooms to squeeze in the extra bedroom.  

It's not uncommon for me to come across investors who have used the same lender a handful of times and then start using me for the submissions because I can get the same exact product for cheaper.

Yeah, its pretty uncommon for a homeowner to ask (at least in my area), but since you are asking here. 

During Grahm's era most individuals didn't know how to value companies; as a result, the people who knew how to read financial statements were rewarded with uncommon profits (Reference to a book).4) RE investors should have cash reserves to withstand 3-6 months of mtg payments.

In my market in NJ, it is not uncommon for multifamily homes to go $100k over asking.

Many investors were impacted severely in the last crash; so, absolutely, depending on circumstances (although a crash is highly uncommon). 

Then, I mention that the property owner will need to do repairs, pay for the repairs, show the home to multiple prospects, put the property in escrow, get a home inspection, make more repairs and pay more money, give discounts and then it is not uncommon for the buyer to either back out because he no longer wants your home, or his loan gets rejected and you start the process over and over.

Hey @Jordan Gerkin - This is not uncommon at all here in Chicago and I think it's a solid idea. 

It's not uncommon for commercial and larger MF properties to have much longer due diligence periods. 

@Slim GeransarI would not say it's uncommon to invest out of state..especially if you're from New York.