A used apartment gives Kolkata buyers an advantage: **the actual unit and its building already exist**. That makes it possible to investigate things no brochure can answer, such as water pressure on the top floor, lift reliability at rush hour and stains that reappear after heavy rain. But a resale flat inspection should be systematic. A clean-looking living room is not evidence that the hidden services or structural elements are in good condition.
Begin outside the apartment
Before admiring the interiors, walk around the building. Examine the entrance, drainage channels, parking basement, exposed pipework, roof access where permitted, terrace waterproofing, stairwells and fire exits. Look for standing water, persistent dampness, spalling concrete, exposed reinforcement and ad-hoc electrical wiring. These are **reasons to request an expert inspection**, not conclusions about structural safety.
Ask when lifts were last serviced and whether the association maintains inspection records. A single operational lift in a busy tower can materially affect daily life when maintenance is required. Evaluate the condition of common areas, not just the seller's private unit.
Seepage and moisture: inspect the usual trouble spots
Look carefully at external-facing walls, bathroom backsides, kitchen sink cabinets, window corners and the wall below a balcony. Fresh paint, furniture and wallpaper may hide staining. Use a torch around skirting, ceiling joints and plumbing ducts. Ask for documentation of past leaks and what repairs were completed.
Water marks near a bathroom do not always identify the source. They may come from the unit above, a service shaft, facade leakage or plumbing within your own apartment. Diagnosing the source before negotiations can save significant expense.
Plumbing, electricity and ventilation
With permission, turn on taps, flush toilets and observe drainage speed. Ask whether the building has adequate water storage and whether additional pumping costs appear in the maintenance bill. Test accessible switches and power outlets with professional assistance where appropriate, and obtain an electrician's assessment if wiring appears aged or altered. Do not open electrical distribution boards yourself.
Open windows to test airflow and note actual daylight at the time of the visit. A room can be technically ventilated yet feel dark because a nearby tower blocks light.
What a structural expert should examine
A qualified engineer can inspect visible distress, modifications to columns or beams, unusual cracks and deterioration of accessible elements. Buyers should not treat a phone-camera check or an online crack chart as a substitute for an on-site expert opinion. Ask the association about prior structural audits, major repairs and permissions for alterations.
