What should a professional see in the first handoff? The safest answer starts by preserving timing, location and trigger information rather than assigning a cause from one clue.
What this question is really testing
moist indoor air reaches a surface below its dew-point temperature and releases water. The observation becomes more useful when it can be compared with high indoor moisture load, weak ventilation, local thermal bridging, air leakage and exterior water entry.
A useful next observation
Note cooking, showering, drying laundry and fan operation. Record the result together with conditions that stayed unchanged so the comparison remains honest.
Safety and handoff boundary
Do not treat persistent wetting, decay, visible electrical damage or extensive material deterioration as ordinary condensation. Correcting humidity does not replace investigation of active leakage. Bring paired humidity and temperature readings, photos before wiping, room-use notes and a map of which surfaces remain dry.
