Prefabricated (aka prefab) cabinets are factory-made cabinets that come in a predetermined set of colors, materials, and styles. Though these types of cabinets that you'd select straight from a catalog don't allow you to choose exact cabinet construction elements like frame, fit, and door overlay, they're significantly more affordable than custom-made ones. Custom cabinets can cost anywhere from $500 to $1,500 per square foot, compared to prefabricated cabinets that usually fall between $60 and $200 for the same dimensions.