Jocelyne Cuenin Jul 20, 2011:

D'accord avec Jocelyne toutefois, pour moi "agencement" est clairement du côté du "layout" (http://www.ehow.com/how_5192524_change-room-layout.html)

Jocelyne S Jul 20, 2011:

From the looks of it From the website, it looks like Phil's hit the nail on the head. If, however, you want to stick closely to the source text, then I would go with something like "layout and design", although I'm pretty sure you could get away with the creative licence.