Thank you But I think it should say when you do /res tag, that you need to add a "add" to the command.
Try using /res tag list to list the tags you already set, /res tag add <name> to add 'name' as a tag to your residence and finally you can also use: /res tag del <name> to remove it. I think I know where you got this from: /res help says "/res tag - Tag your residence for others to find." Right? The bug sits in that help screen, not the commands itself. Edit: ninja'd and totally agree with the above comment