Conceptplans.com | The premier destination for stock house floor plans in PDF or CAD format

What DWG format is used for the floor plans on Conceptplans.com?

All of the files on Concept Plans are saved in AutoCAD 2007 DWG format. Earlier versions of AutoCAD will not be able to open most of the files as some of the new features in AutoCAD 2007 or later will not be backward compatible with the older versions.