A domestic appliance including a built-in oven configured to be positioned in a cut-out defined in a kitchen. The built-in oven includes a housing having a cooking chamber defined therein, a lower frame positioned below the cooking chamber, and a height adjuster coupled the lower frame. The built-in oven has a first vertical height when the height adjuster is positioned in a first predetermined position and a second vertical height when the height adjuster is positioned in a second predetermined position.