Coldwell Bank Schmidt Realtors flagship location at 402 E. Front Street in downtown Traverse City will undergo a complete renovation and expansion this spring. Company President Mike Schmidt says the company experienced $380 million in sales growth in 2012 compared to 2011. "We have been hiring new people and re-investing in our buildings and technology heavily over the last 12 months as we are preparing for a very healthy real estate market…" Construction is slated to be complete by May.