3-Room HDB Flat in Singapore: Refresh or Full Renovation? Five Checks That Decide
Pictured above: the hallway of an older HDB flat from our project archive (C04), during demolition, with the walls hacked back to brick and the old floor finish broken up. This is what the "hacking" line in a full-renovation quote actually means.
Ask three contractors to quote a 3-room HDB flat and the numbers can be far apart, and all three can be honest. Our own published range for a 3-room flat runs from about $18,000 for a basic refresh to $30,000 to $45,000 for a full renovation. The gap between those two figures is not polish. It is whether the walls and floors get opened up or left closed.
That decision is made by what is inside the flat, not by taste or by the budget you started with. This guide gives you five checks you can do yourself before anyone quotes, so that you know which side of the line your flat is likely to sit on. It uses only the figures already published on our 3-room HDB renovation cost page. They are ranges for scope, not a quotation for your flat.
The short answer
A refresh works when the parts you cannot see are in good shape: tiles are solid, there is no leak, the wiring is not a worry and you are not moving walls. A full renovation is the right job when any one of the wet areas, the wiring or the layout needs opening up, because those things can only be fixed from inside the wall or under the floor. Doing a refresh over a problem does not remove the problem. It covers it, and you pay again when it shows.
What the two tiers include
As our 3-room page states it, a basic refresh covers painting, flooring (vinyl or tile overlay), light carpentry, minor electrical work, and basic kitchen and bathroom upgrades. Starting price: from $18,000. The same page says a bare-minimum refresh of paint, vinyl flooring and light carpentry with no hacking can start around $15,000 to $20,000 if the flat is in good condition.
A full renovation covers hacking and demolition, full re-tiling, waterproofing, full electrical and plumbing rewiring, custom carpentry (kitchen cabinets, wardrobes, TV console, shoe cabinet, study desk), false ceiling, feature walls, painting and sanitary fittings. Published range: $30,000 to $45,000, inclusive of GST.
The page also lists a standard renovation at $25,000 to $30,000, but it does not itemise what that tier contains. So if a quote lands in that middle band, ask which lines are in and which are out. A middle price that does not name its lines is the one most likely to disappoint later.
Check 1: the wet areas
The kitchen and bathroom are where a refresh most often fails. Tap the floor tiles with a coin or a knuckle. A dull, hollow note means the tile has lifted from the screed. Look at the grout lines and at the ceiling of the unit below the bathroom for stains. Our guide to popped and hollow floor tiles explains what the sound tells you and how it gets fixed.
Why this one decides so much: waterproofing and its test are part of the hacking route. Our published specification for a bathroom is two coats of approved membrane, followed by a mandatory 24-hour ponding test before any tiling begins. That sequence can only happen on a floor that has been hacked down. You cannot waterproof properly through existing tiles. So solid tiles and no leak points towards refresh. Hollow tiles, stains, or tiles you simply do not trust point towards hacking, whatever the rest of the flat looks like. See what the ponding test is for.
Check 2: the age of the wiring
Our 3-room page notes that older resale units usually need more rewiring work, and that this is part of why resale renovations cost more. A flat that has never been rewired was set up for a smaller electrical load than the one you will put on it: an induction hob, a water heater, several air-conditioner indoor units.
You cannot judge wiring by looking, so check the things you can see. Are there extension leads in every room because the sockets are in the wrong place? Does the board trip when two appliances run together? Have you been told the flat was last rewired decades ago? If so, ask before you commit to a refresh who the licensed electrical worker would be and whether the existing supply is enough. Our guide to electrical work and the licensed electrical worker sets out who may do the work and what to hold at the end. Rewiring means opening walls and ceilings, which pushes the job towards the full tier.
Check 3: the floor
The refresh scope includes vinyl or tile overlay. That is an honest option when the existing floor is sound and flat. It is the wrong option over hollow tiles, because the overlay copies every problem underneath it. If Check 1 told you the floor is sound, an overlay may be all you need. If not, full re-tiling falls under the tiling rates on our page, at $5 to $15 per square foot for supply and installation, and it comes with hacking. Our guide to vinyl overlay or retile goes through the choice floor by floor.
Check 4: do you want a wall to move?
If you are happy with the layout, nothing needs to come down. If you want the kitchen opened up, a study built, or a bedroom made larger, that is hacking, and only non-structural walls can be removed. Our 3-room page gives $800 to $1,500 for hacking one non-structural wall, with the HDB permit handled as part of the price. Which walls can go is a question to settle at the site visit, not from a floor plan. See which walls you can remove before you plan around one.
Settle this one before you ask for quotes, because a layout change tips the job into full renovation by itself.
Check 5: what built-in furniture is already there
Count what you would keep and what you would replace: the kitchen cabinets, the wardrobes, the shoe cabinet, the TV console. Our page says a 3-room flat typically needs fewer carpentry pieces than a larger one, often a kitchen set, one or two wardrobes and a TV console. For scale, the figures we publish are $3,500 to $8,000 for a full kitchen cabinet set of around 4 metres, and $200 to $450 per running foot for built-in wardrobes. Sound existing carpentry can stay, and that is one of the quiet ways a refresh saves money. Cabinets with swollen bases or doors that no longer close are the ones to budget for. Our guide to what to keep and what to hack in an older flat covers the keep-or-remove call.
BTO or resale changes the starting point
The same page states that a new BTO flat needs less hacking, so you deduct roughly $5,000 to $10,000 from the resale ranges. A resale flat that needs hacking adds $5,000 to $15,000 versus the BTO equivalent, because older units need more electrical rewiring and waterproofing. A new BTO flat is more likely to pass all five checks, so a lighter scope can make sense there. A resale flat of unknown age needs the checks done honestly, because failing even one of them moves the job to the hacking route.
How long, and where you will be living
Our page gives about 4 to 6 weeks for a full 3-room renovation and 2 to 4 weeks for a basic refresh. If you cannot move out, that gap matters as much as the price. See our guide to renovating while living in the flat. A flat with one bathroom is hardest, because the ponding test alone takes a full day.
Six questions to put on every quote
- Which tier is this, and which lines are in it?
- Is hacking included, and where exactly: kitchen, bathroom, floor?
- Is there any rewiring, and who is the licensed electrical worker?
- Is waterproofing priced, with the 24-hour ponding test as its own line?
- How many pieces of carpentry, and which existing pieces stay?
- What happens if the hacking finds something unexpected, and how is it priced and agreed first?
What to do this week
- Tap the kitchen and bathroom floors and note any hollow spots. Photograph any stain on the ceilings.
- Write down what you want to keep: floor, kitchen cabinets, wardrobes.
- Decide whether any wall should move.
- Send the photos and the list with your request, so the quote is built on facts and not on guesses.
We are an HDB Licensed Renovation Contractor, HB-09-5667H. Deciding between a refresh and a full renovation for a 3-room flat? WhatsApp us on 9107 2601 with your estate, whether the flat is BTO or resale, and the photos above, and we will arrange a site visit. Any price depends on that visit. The published ranges for 3-room flats are on our 3-room HDB renovation cost page.
Related reading: popped and hollow floor tiles · what to keep and what to hack · electrical work and the licensed electrical worker · a 4-room resale package: what is included