The Maximum Sink Size for a Corner Sink Base

Having enough storage space and creating an efficient work triangle are important parts of having a functional kitchen. Depending on your kitchen's layout, putting the sink in the corner could help make that happen. However, placing your sink in the corner does limit the basin size you can install.

Corner Sink Base

A corner sink base is a rarely used type of base cabinet. Sinks are usually placed under either a window or along a pony wall that looks out from the kitchen into a dining or living room. A corner sink base sits in a corner, much like a lazy Susan cabinet does. These sink bases come in two types: either a standard or diagonal model. The standard model is shaped like the letter L, with a 90-degree angle at the center. The diagonal model is wider and is shaped like six-sided diamond.


You can place a kitchen sink into either type of corner sink base. The standard model is narrower, which limits your size options. A standard 22-by-24 inch sink will be too wide to fit the cabinet; instead you must look for a narrower option of 18 inches maximum. You have much more freedom with a diagonal model. A 33-by-22 inch sink will fit into a sink base cabinet that takes up 36 inches on each wall; if you have a larger cabinet that takes up 42 inches, you can increase your sink size to 36- or 38-by-22 inches.


If you must place your sink in the corner of the room, consider installing two separate sinks in the cabinet, rather than a single basin. Install the basins at right angles to each other. This gives you two basins, and both can be 33-by-22 inches. The narrow space between the two sinks can be used for storage or an area for indoor plants.


If you intend to install a single sink in a standard sink base cabinet, you can make it deeper than the standard 8 inches. By placing a 10- or 12-inch-deep sink in the corner, you make up for some of the space you give up with a narrower sink. A lazy Susan is a more efficient use of storage space in a corner base cabinet; if at all possible, try to move the sink to a more standard location.