SingRank Singapore
The 500k HDB renovation story is real: a couple spent about $500,000 renovating a 5-room resale flat, roughly ten times what most 5-room owners spend. The project ran exactly one year, from 15 May 2025 to 15 May 2026, and the itemised figures were reported by Stomp: $115,000 on hacking, tiling and flooring, $80,000 on rewiring and smart systems, $60,000 on carpentry. Every line is below.
But here's our position, and it's the reason this article exists: the most expensive thing about this renovation isn't the marble. It's what the number does to your budget after you've read it. Viral figures quietly move your sense of "normal", in both directions, and that costs real money.
What the $500k HDB renovation bought
The full itemised list, as reported by Stomp. These are the owners' own figures, not our estimates:
| Line item | Reported cost |
|---|---|
| Full hacking, tiling and flooring | $115,000 |
| Electrical rewiring, smart home, lighting | $80,000 |
| Carpentry works | $60,000 |
| Stone slab installation | ~$40,000 |
| Starry-sky ceilings and partitions | $35,000 |
| Premium laminates and tiles | up to $20,000 |
| Stainless steel gold-capped trimmings | up to $18,000 |
The design brief explains the rest of the gap. No painted walls anywhere in the flat: every surface is stone, texture or custom carpentry. One common bedroom became an oversized walk-in wardrobe. There's a gaming room with geometric panels, concealed air-conditioning throughout, and a kitchen the owners describe as a showroom, because they rarely cook.
Say what you want about the total. The process detail is the part we'd actually defend: the couple went through three groups of drafters and 40 revisions of the 3D drawings before a single wall came down.
Most renovation regret we see comes from owners who decided fast, not owners who spent big. They knew exactly what they wanted. It just happened to cost half a million dollars.
The multiplier, not the money
Put the viral numbers next to a typical job and something more useful than shock appears. A comprehensive 5-room renovation typically lands between $50,000 and $90,000 for moderate to complete work, call it $70,000 in the middle.
The $500K flat isn't a different kind of project. It's the same line items with different multipliers, and the multipliers aren't even.
Their hacking, tiling and flooring reached $115,000, several times what that scope costs on a typical complete 5-room job. Carpentry at $60,000 runs maybe three to four times a full package.
But the stone slabs, starry ceilings and gold-capped trimmings? Those lines don't exist in a normal budget at all. That isn't scaling up. That's a different product category, closer to boutique-hotel fit-out than home renovation.
Notice which lines multiplied hardest: the ones you can see and touch, surfaces, trims, ceilings. And which stayed closest to normal: the ones that keep a flat working, wiring, plumbing, waterproofing.
That's backwards from how a first-timer should allocate, and it's the judgment call we'd make with your money every single time. The next thousand dollars in your hdb renovation budget goes into what's inside the walls, not onto them.
An $18,000 trim package photographs beautifully and adds nothing on the day your wet-area membrane fails; the water finds your downstairs neighbour's ceiling either way. If a contractor's quote grows the visible lines while the invisible ones stay vague, that's a quotation worth reading twice, slowly.
The anchoring trap
Now the part most coverage got wrong. The forums split into two camps, "ridiculous waste" versus "their money, their choice", and honestly, the second camp wins. It's a legally renovated resale flat that broke no rules, and the owners will live in it for decades. Judging their taste isn't our job, and it isn't yours.
But a third effect got no airtime, and it's the one that touches your wallet. Psychologists call it anchoring: the first big number you see becomes the ruler you measure the next number with.
After "$500K HDB reno" spends a week in your feed, a $75,000 quote, squarely inside the published $50,000 to $90,000 range for a complete 5-room job, starts to feel modest. Reasonable, even. You can no longer tell, because your ruler has been bent.
We've watched it work in reverse too: owners anchored on a friend's $30,000 total from 2019 read every honest 2026 quote as profiteering, walk toward the cheapest number instead, and get caught by the costs no quote shows.
You can feel the anchor working in the showroom. Picture yourself holding two laminate samples that look identical, and the salesperson mentions the viral flat used the pricier one. Suddenly the extra $4 per foot feels like joining a club instead of losing money. That reflex, multiplied across forty decisions, is how budgets drift five figures without one bad choice being made.
The defence is boring and it works: anchor on scope, never on totals. Before you look at any number, viral or quoted, write down what your flat actually needs, line by line.
Then price each line against a current itemised reference like our 2026 HDB renovation cost guide. A total can anchor you. A scope list can't, because it argues back.
What your 5-room actually needs
Strip the marble away and the flat underneath the story is an ordinary ageing 5-room resale. In 2026, it needs three things, in this order:
- The age-driven works: rewiring if the flat still runs its original electrical load, replumbing of ageing pipes, and fresh waterproofing in both toilets. Unglamorous, invisible, and the reason a renovation still works in year five.
- The layout decisions. Every hacked wall drags cost behind it: the permit, the disposal, the making-good, the retiling around what used to be there.
- The finishes everyone starts with: flooring, carpentry, kitchen. Last, because they're the easiest to scale to whatever budget survives the first two.
Look back at the table above and you'll see the viral budget concentrated in the exact reverse order. That's fine at half a million dollars. At a typical 5-room budget, copying that order is how flats end up beautiful and fragile.
One honest caveat, since we sell renovation packages ourselves: if your resale flat was done up in the last ten years and the bones are sound, you may not need the full works at all. Overlay the floors, refresh the carpentry, keep the walls. Owners do this well under $40,000, and we'd rather tell you now than bill you for scope you didn't need. The full stage-by-stage numbers live in our 5-room cost guide.
Common questions homeowners are asking
How much did the viral $500K HDB renovation cost per item?
Per Stomp's report: $115,000 for hacking, tiling and flooring; $80,000 for rewiring, smart home and lighting; $60,000 for carpentry; about $40,000 for stone slabs; $35,000 for ceilings and partitions; up to $20,000 for laminates and $18,000 for trimmings.
Is a $500,000 HDB renovation allowed under HDB rules?
Yes. HDB regulates what you renovate, not what you spend: hacking permits, wet-area waterproofing windows, structural limits. A high-budget renovation using an HDB-licensed contractor with the right permits is exactly as compliant as a modest one.
What does a normal 5-room HDB renovation cost in 2026?
A moderate to complete 5-room renovation typically runs $50,000 to $90,000 in 2026, depending on flat age, hacking scope and material grades. Lighter refresh projects on newer resale flats can land well under $40,000.
How long does a full HDB renovation take?
A typical full renovation runs 8 to 12 weeks once permits are approved. The viral project took a full year, driven by its scale and 40 rounds of design revisions, per Stomp, not by HDB processing time.
Should I budget more because renovation prices went viral?
No: budget from scope, not from headlines. List what your flat needs, price each line against a current itemised guide, and get quotations that break costs down the same way. A viral total, high or low, is an anchor. Your scope list is the antidote, and it's also how you'll know an honest quote when the 500k hdb renovation headlines have faded.
RCS is an HDB-licensed renovation contractor, Licence No. HB-11-5877Z.
Editorial note: figures for the featured renovation are the owners' own, as reported by Stomp (May 2026). RCS has no affiliation with the project or its owners, and none of the commentary above is directed at them. Typical cost ranges are drawn from RCS's published 2026 price guides, linked in the text. Views on budget allocation are RCS's professional opinion as a licensed contractor, not financial advice. Every flat differs: treat all ranges as planning references and obtain an itemised quotation before committing a budget. We correct errors: reach us via the contact details on this site.
