Separate function from appearance
A broken hinge is different from a layout that no longer works.
Water damage needs a source
Swollen cabinet material near a sink should not be replaced without checking why it became wet.
Refinishing has limits
Finish work cannot correct failing boxes, delamination or a poor layout.
Replacement affects adjacent systems
Counters, sinks, plumbing, electrical and backsplashes can become part of a larger project.
Safety boundary. General planning information only. Do not open, dismantle or work on hazardous electrical, gas, structural, fire-protection or contaminated-water systems unless you are appropriately qualified and authorized.