12” is the ideal overhang for comfortable seating without hitting your knees on the cabinet, however, the overhang does need to be adequately supported. Last Updated: 2 years ago in Fabrication 0 1 Related Articles What is the difference between honed and polished ? What surface finishes does stone come with? What height will be standard backsplash ? What overhangs at the cabinet I will have ? Will my sink cutout have overhang ?