Very little. Stainless cable railings need an occasional wipe-down and a periodic check of the cable tension, and quality hardware tensioned correctly at install holds that tension for years. There is none of the staining, sealing, or repainting a wood baluster railing requires; rinsing off grime so the stainless keeps its finish is about the whole of it. If a question ever comes up, we are local and easy to reach.