We have an "L" in our kitchen whose back dimensions are 54" by 52". It sounds like that's just small enough to make the L out of one piece of granite. That would mean no seams necessary anywhere in the kitchen (a 7' length of counter with a sink in it, and a 3'x4' island)

Is it reasonable to ask the fabricators to do the corner in one piece? We're doing a simple edge so there shouldn't be extra material needed for that. The ends butt up against the fridge surround and the stove. Our fabricator gave us a fixed quote regardless of the number of slabs they use (we picked out 2 just in case).