What adjustment should be made for upper cabinet depth?

The adjustment for upper cabinet depth typically involves subtracting 1 foot from the total depth measurement. This is because standard upper cabinets are generally shallower than base cabinets. While base cabinets often have a depth of around 24 inches, upper cabinets usually have a standard depth of about 12 to 15 inches. By reducing the overall depth measurement by 1 foot, the adjustment aligns with typical design standards, ensuring that the cabinets function properly and aesthetically within the kitchen space.

Considering other options, adding depth or maintaining it would not accurately reflect the design requirements of upper cabinets, which are intended to be less deep than their lower counterparts for convenience and accessibility. Ignoring the depth entirely overlooks an important aspect of cabinet design, potentially leading to functional issues in kitchen layout.