The most useful thing we say at Big Bay is that a five-year-old building does not imply five-year-old-condition hardware. Outdoor fittings here age on a marine clock rather than a calendar one, and a gate lock or a padlock chosen to a build specification can be genuinely finished while the building around it still looks brand new. Owners are frequently surprised, and it is worth stating plainly rather than diagnosing as a defect.
The correct response is to replace exposed items with fittings specified for the position rather than for the programme — sealed mechanisms, coated or stainless components, marine-grade padlocks on anything outdoors. It costs more once and it removes a replacement cycle that owners on this beachfront otherwise come to accept as simply how it is.
Alongside that sits the handover point, which is entirely separate and equally worth acting on. Whatever a unit's exposure, the cylinders that came through a construction period were open to a considerable number of people, none of it recorded. Changing them is an hour's work, it has nothing to do with the weather, and it is the one step that converts an assumption into something a household actually knows.