It is too hard to tell in game how big a room is while building the room. The only way to get the measurements you want is to count the number of squares in your head while you are building, divide the cost of the room by the cost of a wall, or count the number of squares when you are done. I am thinking the devs could add a counter on top of the room cost so players can easily know how big the room they are building is. I don't know if this is possible to do in game but below is a picture example of what I mean:
Comments
I'd definitely like to see this implemented.
When you build there should be a tag telling you how large the room is 12x9 etc.