Property tax assessments are done en masse, meaning your property taxes are based on generalities, not the specifics of your property.  If your property is over assessed, you are paying more than your fair share.  This doesn’t matter all that much if the difference is small, because the cost in time and money to appeal your assessment has little payback.  But if you own commercial property, savings could be significant.  It may be a good idea to check with a property tax consultant who knows the system.  Best of all, their services are contingency based.  They are paid a percentage of what you save, so it costs you nothing if there are no savings for you.