A small crossroads with an outsized footnote
Unionville began as Fleenersburg and was platted in 1847; its odd claim to fame is that in 1911 it was calculated to be the center of population of the entire United States, a spot later marked by a monument. Today it is a quiet unincorporated community in the karst uplands of Benton Township, where homes sit scattered across the same sinkhole-prone limestone landscape that defines the country north of Bloomington.
Foundations on rural karst ground
On this terrain the foundation questions are distinctly rural: where solution features and sinkhole drainage carry water underground, how far down competent bedrock actually lies, and whether an older country home's footings were ever set for these conditions. Because lots are large and geology varies sharply over short distances, an on-site look at the specific parcel does more here than any general rule about the region.
Where to begin
Before a Unionville site visit
Share the symptom and its timing, the home's age, and anything you have noticed about drainage or sinkholes on the property. Provider coverage into rural Monroe County varies, so confirm licensing and availability directly.