Over the years I have walked into hundreds of resale flats with buyers, and the pattern is almost always the same. Everyone notices the flooring, the built-in wardrobes, and whether the kitchen has been redone. Very few people look up at the ceiling corners, run a hand along the bathroom wall, or ask when the last A&A works were done. A viewing is not just a chance to picture your furniture in the living room. It is your one real opportunity to catch problems before they become your problems, since most resale flats are sold on an as-is basis. This guide sets out what I tell my own buyers to check, in a sensible order, so you walk out of a viewing with more than just a feeling.
Start with the bones, not the finishes
New paint and fresh laminate flooring can hide a lot. Before you admire the renovation, take a slow walk around the perimeter of every room and look at the ceiling corners and where the wall meets the floor. Hairline cracks are common in older flats and usually not a concern, but diagonal cracks running from a window or door frame, or cracks that widen at one end, are worth flagging and asking about. If the flat has been recently repainted throughout, it is fair to ask whether that was cosmetic or done to cover up something specific like a leak or crack repair.
Spalling concrete is another thing to check, particularly on older flats and especially near bay windows, air-con ledges, and the underside of the unit above if you can see it from a common corridor. Look for bulging paint, rust stains bleeding through, or small chunks of concrete missing at ceiling or beam edges. It is not something to panic over, since HDB and town councils do manage this, but it affects timing and sometimes cost if remedial works are pending, so it is a fair question to raise with the seller or their agent.
Water, damp, and waterproofing signs
Bathrooms and kitchens deserve extra attention because waterproofing issues are expensive and disruptive to fix later, and they often do not show up in listing photos. Check the ceiling of any bathroom, and if there is a bathroom directly above the unit, look for water stains, bubbling paint, or a musty smell. Run your hand along the wall near the shower area and skirting to feel for dampness. If the unit has a bay window or planter box, check the corner joints for tide marks that suggest past water seepage during heavy rain.
It also helps to ask what floor the unit is on relative to the block, and whether the flat above or below has had any renovation or plumbing work done recently, since this can affect the odds of future seepage disputes. None of this means you should walk away from a flat with an old stain, but knowing about it upfront gives you room to negotiate the price, ask for a resolution before completion, or simply factor in the cost of checking it properly with a contractor before you commit.
Layout, light, and how the flat actually lives
Photographs flatten a home into two dimensions, so use the viewing to test how the space actually behaves. Stand in the living room around the time of day you would normally be home and notice how much natural light comes in, and where the sun falls in the late afternoon if the unit faces west. Open every window and door to check for how much street noise, cooking smells from neighbours, or road traffic carries through, since this varies a great deal even between units on the same stack.
Pay attention to storage as well. Many older flats were built with less built-in storage than newer BTOs, so check what has been added, whether it eats into usable floor space, and whether it was done with proper permits if it involves hacking or structural changes. Walk the full length of the corridor from the lift to the unit, and take note of how far it is, whether it is sheltered, and how many units share the same lift lobby, since this affects daily convenience more than most buyers expect before they move in.
Look beyond the unit itself
The flat you are buying does not exist in isolation from its block and estate, so it is worth spending ten extra minutes outside the unit. Check the condition of the common corridor, staircase, and lift lobby for cleanliness and maintenance, since this often reflects how well the town council manages the estate and how considerate your future neighbours are. Look at where the bin centre, car park, and any construction sites are relative to the block, and consider visiting again on a weekend or in the evening to see the estate at a different time of day.
If the unit has a nice view now, it is worth asking whether there is any known future development planned on the open land nearby, since URA’s master plan and land sales notices are public information your agent can help you check. This will not stop a good flat from being a good buy, but it avoids surprises a few years down the road when a plot across the road that used to be empty gets built up.
Questions worth asking during the viewing
A good viewing includes a conversation, not just a walk-through. Ask how long the seller has lived there and why they are selling, since this often surfaces useful context, whether it is an upgrade, a family situation, or simply moving on. Ask about the age of the renovation, whether any hacking or A&A works were done, and if so, whether HDB approval was obtained, since unauthorised works can complicate your purchase later.
It is also reasonable to ask about aircon servicing history, whether there have been any pest issues, and whether the seller has had any disputes with the neighbours above or below regarding noise or water seepage. Sellers are not obliged to volunteer everything, but most will answer directly when asked, and their agent should be able to clarify anything they cannot answer on the spot.
Turning your notes into a decision
The point of all this is not to find a perfect flat, because one rarely exists. It is to walk away from every viewing with a clear, honest picture of what you are actually getting, so you can make a decision with your eyes open rather than being swayed purely by staging and good lighting. I encourage my buyers to bring a simple checklist on their phone and take photos of anything that catches their attention, so that when they compare two or three shortlisted units later, they are comparing facts and not just impressions.
This habit also puts you in a stronger position at the negotiation stage. If you have specifically noted a water stain, an ageing air-con unit, or a lack of built-in storage, you have concrete points to raise, rather than a vague sense that the price feels a little high. A careful viewing takes a bit more time upfront, but it tends to save far more time, and stress, later on.
If you are viewing resale flats and want a second pair of eyes, or simply want to talk through what you noticed before you make an offer, feel free to reach out to me on WhatsApp or drop me a message. No pressure, just a straightforward conversation about what you saw and what it might mean for your decision.