Last time I spoke to a realtor in our area, I asked her a simple question. Do you have any statistics on per sq ft comparison against $. There was “no comment” from her. There are lots of such things you can access for commercial real estate, including county’s projected growth, etc. No such things were readily available for folks like you and I.
Here is a nice tool that gives such results. Not sure how valid they are, at least, it gives us some idea.
Residential Real Estate Comparison Tool