Free PermRemovAreasRooms Revit Add-in from dp Stuff

"PermRemoveAreasRooms Revit API addin allows you to delete rooms or areas permanently on the fly directly from any of your Revit views without having to do it from the Revit schedule. You have two options: either pre-select the elements and run the tool to delete just the rooms/areas in your selection, or you can collect ids of rooms/areas that you want to get rid of and copy/paste them via 'Type In Element Ids' method."

This free add-in may be downloaded from the dp Stuff website.

Credit: Luke Johnson's What Revit Wants blog.