First it was Zombie Highways and now Zombie Buildings?! That’s the fear of many. Residential real estate fell off a cliff just more than a year ago and maybe, just maybe has found a bottom in many markets. But commercial real estate is a different story and the cliff may be looming in the near future. Increasingly vacant Big Box retail sites have been in the news here lately, but overall St. Louis is not likely to feel the burden of having overbuilt when times were good. To see what others cities are possibly facing check this out: