Start with the room, not the cabinet list
Sketch every wall and record finished wall-to-wall dimensions. Mark doors, windows, ceiling changes, soffits, columns, vents, and any condition that limits cabinet depth or door movement. Measure openings from finished surfaces rather than framing that will later receive drywall, tile, or panels.
Record ceiling height at several points. Existing rooms are rarely perfectly level or square, and the smallest verified dimension controls where a cabinet run can fit. Note casing widths and the direction every nearby door swings.
Locate appliances and utilities
Use the final appliance specification sheets, not nominal widths. Refrigerators, ranges, dishwashers, wall ovens, hoods, and microwaves each require installation clearances and may need panels or fillers. Mark the centerline of plumbing, gas, electrical service, and ventilation on the plan.
A sink base must align with workable plumbing while preserving dishwasher and trash-pullout locations. Wall cabinets around a hood or refrigerator should be checked against appliance height and ventilation instructions before the order is released.
Turn measurements into an item schedule
Build each elevation from fixed constraints toward flexible storage. List every wall, base, tall, vanity, filler, panel, molding, and accessory item. Keep item numbers tied to the drawing so receiving and installation teams can identify each piece.
Final dimensions, selected series, exposed sides, finished panels, and freight access should be reviewed together. A product page is useful for comparing published configurations, but it is not a substitute for a complete field-verified cabinet plan.