I keep hearing that commercial real estate is in bad shape. At the
same time, valuations of stocks are up 70% and I would like to
diversify my investments a little bit, as I am mostly invested in
stocks.

I would like to try to buy a small warehouse and just rent it out
forever. This would not be a purchase for a quick flip.

I was trying to find out some basic things, like rents per square
foot, prices per square foot, see listings of what is available, etc.

When I just do web searches on this stuff, I come up with so little,
as if information on this was classified.

I am in Chicagoland and would be interested if someone can help me
get started with some useful pointers or experiences.