A backsplash is a vertical scope
A kitchen backsplash scope has to name where the field starts and stops on the wall, how openings for outlets and switches are cut, and how the joint against the counter and any exposed end are finished. The floor area of the kitchen does not describe that wall. A floor proposal with the word kitchen swapped in is still a floor proposal.
Walk the boundary
Start at the counter and mark the top of the field: a short band, a run that dies into the upper cabinets, or a full-height field beside a hood or a window. Then mark the left and right ends, including any return onto a side wall. Those edges are the scope. A single backsplash label hides whether the hood leg, the window jamb, and the open end of a peninsula are in or out.
Every device is a cut
Each outlet and switch is an opening, a plate, and a box that has to land flush with the finished face. The scope should say whether the plates come off and go back on, and whether the boxes are brought forward to the new face. Counting devices from a photo is part of describing the wall. Skipping them undercounts the cuts even when the area looks small.
The counter joint and the raw ends
The scope should say whether the joint where tile meets the counter is grout or a flexible sealant. Counters and walls do not move as one piece, so an unnamed joint is an unfinished decision. An exposed end needs a finished edge: a shaped tile, a metal trim, or a miter. "Tile to the counter" does not choose that edge.
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