Island Seating Overhang
How much countertop overhang do I need for seating?
Countertop Cantilever Depth
A standard 12-inch overhang is minimum for knee space at a 36-inch high counter. For bar-height seating (42 inches), a 10-inch overhang is usually sufficient.
A mandatory 12" (standard) to 15" (ideal) cantilevered countertop space required for ergonomic knee clearance at bar heights.