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The work

Three studies, published with their limits.

Every figure here comes from matched buy-and-sell pairs, the same unit bought and later sold, so each row is one owner's real outcome rather than a point on an index. Sample sizes are printed. So is the part of each study that does not support what I would like it to.

Jervis Koh

Method

Why matched pairs, and not a price index.

An index tells you what the average price did. It cannot tell you what happened to a person, because the thing being averaged changes every quarter as different homes transact.

A matched pair is the same unit bought and later sold by the same owner. It gives a real holding period, a real entry price and a real outcome, including the ones that lost money. It is more work and a smaller sample, and it is the only version worth putting in front of someone who is about to commit.

Every chart carries its own source and pull date. URA restates caveats for weeks after a month closes, so a figure quoted today can move, and a stale chart is visible rather than hidden.

Standing rule

The limits go on the page, not in the footnotes.

Each study ends with what it cannot support. A sample of 56 that flatters the argument does not get used. A five year private record does not get blended with a thirty six year HDB one and called the same thing. A result about resale does not get quoted as a result about launches.

That section is not modesty. It is the reason the rest of the numbers are worth anything.

Where these numbers come from

Computed from URA caveat data, URA government land sale tender results and the HDB resale register, pulled 12 September 2026. Past transactions describe what happened to other owners and are not a forecast for any particular unit. Nothing here is financial advice.

Ask Jervis

Bring me a question, not a commitment.

Send the address, the situation, or the thing you are trying to decide. You get my read on it. If the honest answer is that you should do nothing this year, that is the answer you get.

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