In-stock and semi-custom kitchen cabinets and countertops come in a few standard sizes, but custom options also are available to create a functional kitchen that maximises workspace.
Standard Base Cabinets
The standard depth of a kitchen countertop from the wall to the edge of the counter is 25 1/2 inches. This allows for a 1 1/2-inch overhang over 24-inch deep base cabinets. Standard laminate countertops are usually sold with a 3-inch backsplash attached, which doesn't affect the overall depth of the countertop, but only leaves about 24 inches of worktop space.
Kitchen islands and peninsulas can use standard 25 1/2-inch counters, but wider options are available. Standard 24-inch cabinets can support 27-inch and 36-inch countertops for more workspace. Extra deep 48-inch island countertops are available and nearly double the standard countertop space.
A bar top is another option that can be added on to a peninsula or island. A 42-inch high bar or eating area can be added on to the back of a standard kitchen cabinet with a 15-inch, 18-inch or 21-inch top depending on your available space.