The Renovation Defect Inspection Checklist Every Singapore Homeowner Should Use

A renovation defect inspection is a careful room-by-room walkthrough you do near handover to catch faults before you release final payment and sign off. Go slow, test everything that switches, opens, drains or slides, and write down every issue with a photo and a location. In Singapore the biggest problems to hunt for are hollow or lippage tiles, waterproofing and leaks, uneven paint, misaligned carpentry, and electrical points that do not work.

Think of it the same way you would treat a BTO or resale flat handover: nothing is too small to note. Contractors expect a defect list, and a clear one written on the spot is far easier to get rectified than a vague complaint weeks later. This guide gives you a practical checklist you can run through with your phone torch, a marble or ball, and a bit of masking tape.

When should you do the defect inspection?

Do the main inspection when the work looks complete but before you make the final payment and before you move furniture in. An empty, cleaned unit is much easier to inspect, and holding the last payment gives you real leverage to get defects fixed.

Book it in daylight if you can, since natural light exposes paint patchiness, tile lippage and surface scratches that ceiling lights hide. Bring a second person: one holds the torch and tests, the other logs. Plan for at least ninety minutes for a typical HDB flat, longer for a bigger or condo unit.

Timing: after works finish, before final payment and before moving in
Bring: phone with torch and camera, a marble or small ball, masking tape, a power-bank charger to test sockets, and this checklist
People: ideally two, so one tests while the other records
Conditions: daytime, unit cleaned and empty

How do you check tiles and flooring?

Tiles are the most common defect in a Singapore renovation, so give them the most time. Tap across every tiled floor and wall with your knuckle or a coin: a crisp sound is solid, a hollow drum sound means the tile is not fully bonded and may lift or crack later. Roll a marble across large floor areas to spot slopes and dips, and run your finger along tile edges to feel for lippage where one tile sits higher than its neighbour.

Check the grout lines are even, fully filled and consistent in colour, and look closely at corners, skirting and the transitions between rooms where cutting is fiddliest. Mark every problem tile with a small piece of masking tape so the contractor can find it again.

Tap test every tile for hollow drum sounds
Feel edges for lippage (uneven height between tiles)
Roll a marble to find sloping or dipping floors
Inspect grout for gaps, cracks, uneven colour and missing fill
Check chips, scratches and cracks, especially near doorways and corners

What about waterproofing, plumbing and leaks?

Water problems are the ones that cost the most to fix after you move in, so test wet areas hard. In bathrooms and the kitchen, run every tap, fill and drain the sink and floor traps, and watch how fast water clears; slow drainage or pooling means the floor gradient is wrong. Flush toilets several times, check for rocking or leaks at the base, and look under the sink for damp joints while the water runs.

Pour a bucket of water across the bathroom floor and confirm it all flows to the floor trap with none sitting in the corners. Check the ceiling below wet areas and any recently sealed joints for damp patches or stains. If you notice persistent damp, leaks or drainage that will not clear, that points to plumbing or waterproofing that needs a proper contractor to reopen and reseal, not a quick patch.

Run all taps and check water pressure and hot supply
Fill and drain sinks and floor traps to check flow speed
Pour water on bathroom floors to confirm the gradient sends it to the trap
Flush toilets repeatedly and check for base leaks or rocking
Inspect under sinks, around silicone seals and ceilings below wet areas for damp

How do you inspect carpentry, doors and paint?

Open and close every cabinet door, drawer, wardrobe and sliding panel. They should move smoothly, sit flush, line up with even gaps, and stay shut without swinging open. Check that soft-close hinges actually soften, that shelves are level, and that laminate edges are glued down with no lifting or sharp overhang. Look inside carpentry for rough cuts, exposed board or missing back panels.

For walls and ceilings, shine your torch across the surface at a low angle: this raking light reveals roller marks, uneven patches, drips, dents and cracks that look fine head-on. Doors should not scrape the floor or frame, locks and handles should engage cleanly, and gaps around door leaves should be even top to bottom.

Open and close all doors, drawers and sliding panels for smooth, aligned movement
Check hinge soft-close, level shelves and glued laminate edges
Look inside cabinets for rough cuts and missing panels
Use raking torch light on walls to expose paint patchiness, dents and cracks
Confirm doors swing freely, latch properly and have even gaps

How do you check electrical points and switches?

Test every switch, socket, light and fan, one by one. A phone charger or a small night light is an easy way to confirm each power point actually delivers electricity. Flip each switch to confirm it controls the right fixture, check that dimmers and multi-gang switches work as labelled, and make sure switch plates and socket faceplates sit flush and are not loose.

Confirm all light fittings turn on, look for flickering, and check that any aircon points, water heater isolators and the distribution board are properly labelled. Electrical work in Singapore must be carried out by a Licensed Electrical Worker, so if a point is dead, wired to the wrong switch, or a faceplate is loose, flag it for the qualified tradesperson to correct rather than opening anything yourself.

Test every socket with a charger or small appliance
Flip every switch and confirm it controls the correct fixture
Check dimmers, multi-gang switches and that plates sit flush
Turn on all lights and watch for flickering or dead fittings
Confirm the distribution board and isolators are labelled and safely finished

How do you log defects and get them fixed?

A defect list only works if it is specific. For each issue, write the exact location, a short description, and take a clear photo; number them so both you and the contractor can track each one. Hand the list to your contractor in writing, agree a realistic date for rectification, and do a second walkthrough to confirm every item is genuinely fixed before you release the final payment.

If a defect involves tiling, waterproofing, plumbing or electrical work that goes beyond a cosmetic touch-up, it is worth having it corrected properly by your renovation contractor rather than accepting a rushed patch. Keep the paperwork: the quotation, the defect list, and any warranty on workmanship. If you would rather not chase a long list yourself, engaging a contractor whose renovation scope already covers proper snagging and rectification saves a lot of back and forth.

Record location, description and a photo for every defect
Number the items and share the list in writing
Set an agreed rectification date, then re-inspect before paying
Keep quotations, the defect list and workmanship warranties on file

Frequently asked questions

How long does a renovation defect inspection take? For a typical HDB flat, set aside about ninety minutes to two hours if you go through it carefully, room by room. A larger flat, a condo unit or a home with a lot of custom carpentry can take half a day. Rushing is the main reason defects get missed, so it is better to block out proper time than to squeeze it in.

What is the most common renovation defect in Singapore? Tiling issues top the list: hollow tiles that were not fully bonded, lippage between tiles, and uneven or cracked grout. Waterproofing and drainage faults in wet areas come a close second and are the most expensive to fix later, which is why the water tests in this checklist matter so much.

Should I hold payment until defects are fixed? Yes. The standard approach is to keep the final payment until you have done the inspection, listed the defects, and confirmed at a second walkthrough that they are rectified. This is normal in Singapore and most contractors expect it, so agree the process up front in your contract.

Can I do the inspection myself or do I need a professional? Most homeowners can run this checklist themselves with a torch, a marble and a bit of patience. For big-ticket or higher-end renovations, some people hire a professional defect inspection service for an extra set of eyes, but a careful self-inspection catches the large majority of common issues.