No, not a GNU tool for laying out where to put your couch - the company where I work is culturally opposed to individual offices. I see valid points on both sides of the issue, but if it were me, I'd give everybody at least a wall.
If I had a wall, I'd also want a white board and a coat hook.
If I had a wall, I'd turn my desk so that people couldn't walk up behind me as I was browsing the internet.
And, within an hour of being in the new space, one of the webcomics I follow came up with a NSFW guest artist. Thanks, guys.