Home Sales In The Tri Cities Continue To Increase, While Inventory Is At An All Time Low. According To Northeast Tennessee Association Of Realtors President Aaron Taylor, The 11 County Region Has 3.4 Months Of Inventory At The End Of April. Only Two City Market Had More Than A Three Month Supply Of Homes For Sale. There Was 544 Closings On Single Family Resales Last Month, Up Over Five Percent From The Same Time Last Year.