That's an excellent and crucial question. Thinking beyond the initial purchase price is what separates a good investment from a future headache. Yes, absolutely—all benches, especially those for outdoor or public use, come with ongoing maintenance costs you should budget for. The amount depends heavily on the material and environment.
For wooden benches, expect seasonal or annual costs for sanding and reapplying protective stains or sealants to combat weathering, rot, and UV damage. Metal benches require inspections for rust, with costs for sanding, touch-up painting, or powder coating every few years. Concrete benches are low-maintenance but may eventually need crack repair or mildew cleaning.
Beyond materials, factor in routine cleaning supplies and potential repairs for loose bolts, slats, or welds. For high-traffic areas, budgeting for occasional part replacement, like individual planks or caps, is wise. Proactive maintenance is always cheaper than full replacement. Allocating 5-15% of the bench's initial cost annually for upkeep is a prudent starting point, ensuring your benches remain safe, attractive, and functional for decades.