The Basement is not displaying as a room, therefore, I can not show a Room tag. How to display the Basement & Mechanical/Electrical spaces as rooms?
Did you create a room for them? Just wondering. If there isn't a room in that area you can't tag it. To check if there is a room drawn, do a crossing window (left to right) to select the edge of the room area and then go to the filter (lower right corner of the revit drawing area) and see if room is listed. See the attached PNG file.
Hope this helps.
To make a room go to the HOME TAB --> then on the far right you should see Room & Area Panel. Room is the name of the command. Click that and hover in the room area you want the room. While hovering you should see an X appear. That is the room. Click and you now have a room and it should tag fine.
It looks like part of the wall is demoed in one area. (See attached). If this is the case you will need a room separation line placed across this part.
To place a room separation line click the down arrow under the Room Command and select Room Separation Line. Draw a line across this opening. Don overlap the walls, just place the line from wall corner to corner.
That should do it.