Rabbits startle easily and their hutches are often bulky and awkward to carry through doorways. Moving the rabbit in a covered carrier while a couple of people handle the empty hutch separately keeps both the animal and the furniture safe.
Pro tip: Bring a familiar chew toy or piece of hay into the carrier; a rabbit that has something to gnaw on during the ride settles faster.
Watch out: Rabbits can suffer heart-attack-level stress from rough handling or sudden loud noises; keep the carrier covered and handling calm throughout the move.