There are no shortage of homes on the MLS that RE agents list as bedrooms that don't meet the egress requirement (most often those in the basement level).  

No shortage of cheerleaders here on BP!

One of the reasons that cap rates are so low in our area, is that there is a shortage of housing and vacancies are very low. 

In a good area of Bend, a lot just down the street from me (3900sf lot) sold last year for $250,000.There's a severe shortage of builders/contractors/skilled laborers around here.....lots of folks are making $40/hour to hang drywall, paint, etc.

Los Angeles has, perhaps, a permanent shortage of affordable housing, so you can't go wrong. 

There is a shortage of housing and the counties are easier to work with lately.  

The city seems to push for development as there is a shortage of housing in the bay area.

We have a tremendous shortage of skilled construction workers in the U.S.

If there is a shortage of affordable homes, like many markets are reporting, then there will be some nice shorter term appreciation over the next two years.  

The housing shortage here an Knoxville is a very interesting and very real problem that we face.