The Tri-Cities Housing Market Has Seen Annual Sales Reach A New All-Time High. According To The Northeast Tennessee Association Of Realtors, 2019 Saw Several Housing Market Milestones Including The Average Single-Family Resale Price Seeing The Biggest Annual Increase Since 2008. There Were 557 Residential Closings Last Month And The Average Residential Sales Price Was Up 12.6 Percent Over The Previous December 2018 Numbers. NETAR Officials Hope The Trend Continues.