Is it worth moving the sink or the range in a kitchen renovation?

Only when the current layout genuinely does not work, because it is the most expensive decision in the project. Moving a sink means new supply lines, a new drain with the right fall, and often opening a floor or a ceiling below. Moving a range means a new gas line or a dedicated circuit and usually new ducting for the hood. Together they can add 8,000 to 15,000 dollars before any finish is chosen. If the layout is workable and the frustration is about storage or light, that money goes further elsewhere.