Conceptual Estimating is the process of forecasting accurate costs of a project. For the building of a house, conceptual estimating is the skills of accurately assigning a numerical value to all the processes and materials that will be used in it's construction. RS Means is one of the many tools created to make the conceptual process more efficient than ever before. One of it's useful features includes the ability to export our estimate to an Excel file and make further changes by yourself.