Imagine submitting a bid for a construction project, only to realize halfway through that costs are slipping out of control and a job you thought would be profitable has turned into a financial headache. In construction, where margins are tight and prices can change quickly, this happens more often than many contractors expect. Underestimating even a little can do real damage. If you’re off by just 5 percent on a $500,000 project, that’s $25,000 gone before you start. Overest