Is HDB Resale Decoupling From Private Property?

Two things are true about HDB resale right now, and they sound like they contradict each other. Million-dollar flat sales just hit a record. And the overall HDB Resale Price Index just fell for two quarters in a row — something that hasn’t happened since 2018/2019.

Both are real. Neither tells the whole story on its own. Here’s the actual data, and the debate it’s kicked off.

The index is going the wrong way — barely, but twice

The HDB Resale Price Index (RPI) has been drifting down since its Q3 2025 peak:

Quarter	RPI	Change
Q3 2025	203.7	peak
Q4 2025	203.6	flat
Q1 2026	203.4	-0.1% (HDB)
Q2 2026	202.7	-0.3% (HDB)

Two declines back-to-back is the detail that matters. The last time that happened was four straight quarterly falls from 3Q2018 to 2Q2019 (Mothership). On a year-on-year basis, Q2 2026’s 202.7 is essentially flat against Q2 2025 — sources don’t agree on the exact decimal, but the direction is clear: no real annual growth, something HDB resale hasn’t really seen in nearly seven years.

Meanwhile, private keeps climbing

Private home prices haven’t stopped rising — they’ve just slowed down a bit. The URA private residential price index rose 0.5% quarter-on-quarter in Q2 2026, down from 0.9% in Q1 2026 (URA). That’s part of a real run of positive quarters:

Quarter	QoQ change
Q4 2024	+2.3%
Q1 2025	+0.8%
Q2 2025	+1.0%
Q3 2025	+1.2%
Q4 2025	roughly +0.6–0.7%
Q1 2026	+0.9%
Q2 2026	+0.5%

Every single one of those is a gain — private prices simply haven’t gone backward.

Put the two side by side and the gap is the whole story. Over the three quarters since HDB’s peak, private is up about 2.1% while HDB resale is down about 0.5% — roughly 2.6 percentage points of daylight opening up in nine months:

Cumulative movement since Q3 2025, both rebased to 100

Both series rebased to 100 at Q3 2025, so this shows movement relative to that quarter — not absolute index values, which sit on different scales. HDB is calculated from published Resale Price Index levels (203.7 to 202.7); the private line is compounded from URA's published quarter-on-quarter changes, where Q4 2025 was reported only as a range of roughly 0.6–0.7% and the midpoint is used here. Sources: HDB and URA.

That gap is what the “decoupling” argument is built on. It’s also small enough, and recent enough, that reasonable people disagree about what it means — which is the rest of this post.

Under the hood, Q2 2026 was landed-driven: landed prices jumped 2.5% (reversing a 0.4% Q1 dip) while non-landed slipped slightly, -0.1%, with CCR non-landed up 1.8% but RCR down 1.2% (URA). Resale is also taking a bigger share of the private market — 62.0% of Q2 transactions versus 59.6% in Q1. Zoom out to H1: private prices are up 1.4% for the half, versus 1.8% in H1 2025 — still climbing, just decelerating.

So what explains the record million-dollar flats?

Here’s the piece that trips people up. Even as the overall index fell, Q2 2026 saw 491 million-dollar HDB resale transactions — a new quarterly record, and 7.8% of all resale deals, also a record share (Stacked Homes). That’s up from around 411 in Q1 2026, taking the H1 2026 total to 902 versus 763 in H1 2025.

These sales aren’t evenly spread. Toa Payoh, Queenstown and Bukit Merah alone accounted for 195 of the 491 (HomeAsset) — a small, well-located slice of the market pulling the headline while the broader index softens. This is a standard index-composition point: the RPI can move on which towns and flat types are transacting, not necessarily on every flat losing value. A handful of premium flats hitting new highs and a broad index edging down aren’t actually contradictory — they’re describing different slices of the same market.

Is this “decoupling”? Depends who you ask

A June 2026 NUS Institute of Real Estate and Urban Studies survey found that a notable share of real estate executives — roughly a third of respondents — expect private housing to structurally decouple from HDB resale, pointing to diverging buyer profiles, widening price gaps and persistent supply scarcity (NUS).

Not everyone’s convinced. NUS Business School’s Prof Sing Tien Foo argues a few quarters of divergence isn’t proof of a structural break — that would require buyers to actually stop treating HDB resale and private housing as substitutes, which is a much higher bar. He points to history: HDB RPI stood around 77.1 at end-2004, and by end-2006 was about 2.9% below that level, while private prices rose roughly 3.9% in 2005 and about 10% in 2006. The two markets pulled apart sharply back then too, and it didn’t turn into a lasting structural split.

His bigger worry, actually, is the talk itself — that “decoupling” headlines could spook buyers into a panic-buying frenzy (NUS Biz Beat).

PropNex’s Head of Research Wong Siew Ying, commenting on the same divergence, noted that cooling measures and increased BTO supply appear to be “taking hold and working through the market” — and flagged that a widening HDB-private price gap could make the upgrading leap harder for HDB owners looking to move up (PropNex).

What actually matters if you’re thinking about upgrading

The whole-market index is not your flat. Two straight quarters of a national RPI dip doesn’t tell you what your specific unit in your specific town would fetch today — and a record month for million-dollar flats doesn’t mean every flat is suddenly worth more.

If you’re weighing a sell-and-upgrade move, the useful exercise isn’t “is the market decoupling” — it’s pulling the actual recent transactions for your block, your flat type, your town, and comparing that against where private prices in your target area are actually sitting. The macro debate is worth knowing about. It shouldn’t be what decides your next move.

Want your own flat and target area run against the real numbers instead of the headline? Message me on WhatsApp at +65 9806 0007 and I’ll pull it.

Eugene Tan, CEA Reg. No. R074026J, PropNex Realty.