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What "data as at" dates mean, and why they matter

Every dataset on this site carries the date the data actually runs to, not the date the page was built. The two are routinely months apart, and confusing them is how people end up quoting a market that has already moved.

Updated 21 September 2026

Every dataset on this site carries the date the data actually runs to, not the date the page was built. The two are routinely months apart, and confusing them is how people end up quoting a market that has already moved.

Three different dates that get mixed up

DateWhat it meansWhy it is not the others
Data date ("as at")The last day the underlying data coversThe one that limits what you can honestly claim
Refreshed dateWhen we last rebuilt from the sourceCan be recent even when the data is old
Page updatedWhen the words on the page changedSays nothing at all about the data

Different sources move at different speeds, and there is no honest way to average them. Land Registry sold prices are monthly with a registration lag; recorded crime is monthly and published per police force; an EPC can be ten years old and still current.

If a property site shows you a figure with no data date at all, you cannot tell whether it is from last month or three years ago. That absence is itself information.

Sources

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Last reviewed: 2026-09-20. We check these against the linked official sources and re-date the page when they change.