"Accessible Kitchens: Aisle Clearances and Work Surface" is lesson 5 of 6 in the Cabinet and Finish Carpentry (C-6) Learning Hub. It opens with "When This Applies" and works through 5 short steps, then a worked example you can check yourself against.
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The worked example in the course applies this lesson to a realistic job in 5 steps, from "Depth of each run" through "Work surface height".
2025 CBC 11B-212.2 says kitchens, kitchenettes and wet bars shall comply with Section 11B-804, and 11B-804.1 repeats it. The clearance rules of 11B-804.2 are waived for spaces that do not provide a cooktop or conventional range. In residential dwelling units required to comply with 11B-809, the kitchen work surface in 11B-804.3 applies. Ask the designer which kitchens are covered before you lay out the cabinet runs.
In a pass-through kitchen (counters, appliances or cabinets on two opposing sides, or opposite a parallel wall), the clearance between all opposing base cabinets, countertops, appliances or walls within the kitchen work areas is 40 inches minimum, and the kitchen must have two entries (11B-804.2.1). In a U-shaped kitchen enclosed on three contiguous sides the clearance is 60 inches minimum (11B-804.2.2). Because the code lists countertops among the things measured between, measure to the countertop edge, so the overhang counts.
The remaining 3 steps, the worked example and the quiz are in the course. This is a preview. The full lesson, with the step-by-step explanations, a worked example and a quick-check quiz, is inside the classroom.
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