4823 Boul St-Laurent,
It is not mandatory.
Depending on how thick the baseboards are, we can install the wall bed directly in front of them, as we would with an armoire. In some cases, it looks better to push the bed completely against the wall. However, since most floors and walls are not at right angles, it is rare that the entire wall bed leans completely against the wall.
If your baseboards are old and rather large, we suggest that you keep them, because it is unlikely that you will be able to replace them if you move.