I personally am always interested in how a market performed through the most recent recession (2007-20011).

You could lose this thing as Jay mentions... this was far more common coming out of the deep dark recession.. but now a days builders don't need to do this and if they need to do this means they are either long on jobs or short on capital.   

San Diego RE has been pretty good to long time RE investors that were not over leveraged at the Great Recession. 

When the recession hits (soon) the cheapies will worth less and expect to deal with delinquent rents.....

When the recession hits 1 month from now, or 3 years from now-  you don't want to invest at the beginning of the recession.   

I also have a townhouse in Henderson which is either an A- or B+ because it's newer and in a nice gated community, but since Henderson includes areas like McDonald Ranch and Anthem which sell well into the millions, an A to me likely isn't an A relative to multi-million dollar estates, lol.It's funny I actually tried to buy in 2010 which was in the depths of the recession but I kept getting beat out by cash buyers, so I took a break and next thing I knew it was around 2016 and that's when I decided I better start buying before it's too late. 

We are still a few months from a recession that we are due for.

Also I am concerned about them becoming just another part of the rust belt that does pretty well in good times but hits tougher times during a recession. 

Also to an earlier point about taking some of Brandon advice with a grin of salt know he started buying at the deepest part of the last recession, which was probably the greatest buying opportunity in 75 years.So his advice may not be super applicable if you live in a expensive market that’s now very much a sellers market.

During the Great Recession many home flippers used their own savings to purchase at then market rate.