Roof Builder Tools - description from Softdepia.com:
Roof Builder Tools is a plug-in for AutoCAD 14. The software turns a formatted 2D roof plan into a 3D presentation. By selecting individual roof planes, this tool will enable you to create multiple-peak roof models in a short amount of time. Although it is primarily a 3D modeling tool, it can generate 2D elevations by using profiles. It features an effective tutorial guide that will help you to make your first roof outline.
Roof Builder Tools is a "Free to try" program. You can download and try it for an evaluation period.