Methodology

How we turn public records into the figures on every page — and what we deliberately don't do.

Sources

HM Land Registry Price Paid Data — every recorded residential sale in England and Wales since 1995.
Energy Performance Certificates — floor area, used to derive £/m².
ONS Postcode Directory — maps postcodes to streets and areas.
UK House Price Index and ONS CPIH — regional trends and inflation, used for real-terms figures.

Which sales we count

We use Category A sales — standard, full-market-value transactions — and exclude repossessions, transfers to non-private buyers and other non-market records, which would distort a typical price.

Median, not average

Headline figures are the median (the middle sale), not the mean. A few very expensive sales can pull a mean far above what most homes actually cost; the median resists that.

Real terms (adjusting for inflation)

To express an older price in today’s money, we scale it by the change in the ONS CPIH index between the sale month and now. This is why a home that cost less in cash can be worth more — or less — once inflation is accounted for.

Price per square metre

Where a sale can be matched to an EPC record, we divide the price by the certified floor area. Matching is not always possible — flats and leasehold properties are harder — so we show £/m² only where we have a confident match, and say “no floor area” otherwise.

Thresholds and freshness

Pages are only published where there are enough sales to be meaningful.
Data updates monthly, after HM Land Registry’s release. The most recent two months may be incomplete while sales register.
Every page shows its sale count and last update.

What we don’t do

We don’t estimate individual property values, and we don’t show “days on market” or asking prices — the sold-price record doesn’t contain them, so we won’t invent them.