UK House Sold Price Explorer

The shorter the postcode (e.g. SW1A vs SW1A 1AA), the wider the area. A full postcode usually returns 5–25 sales on the same handful of streets — much more useful than the outward-code level.

If you're buying a Victorian terrace, do not include the new-build flats two roads over. Filter to Terraced for a like-for-like comparison.

10 years is the sweet spot — enough sales for statistical reliability, recent enough that the housing stock hasn't changed materially. 5 years for hot urban markets, 20 years for rural/slow markets.

The median is your anchor. The p25–p75 spread tells you how confident to be. If the spread is wide, treat the median with suspicion and look at individual sales by street.

Look at individual sales on your specific street. If three identical houses sold for £350k–£380k between 2022–2024, that's a much stronger signal than a postcode-wide average pulled across 200 different homes.

If asking is more than 10–15% above the inflated p75, the seller is stretching. If asking is below the inflated p25, ask why — short lease, structural issues, or genuine bargain.

We use the annual mean of the ONS UK House Price Index (mix-adjusted, all-property index, rebased Jan 2015 = 100) for each year from 2005 to 2026. Each historical sale is multiplied by latest_index ÷ sale_year_index. This is the same methodology ONS uses to publish their "real-terms" comparisons. We do not adjust for local micro-trends — UKHPI uses national means, so a London house and a Yorkshire house are inflated by the same multiplier even though London moved faster. For local accuracy, look at recent same-street sales.

Mortgage lenders typically cap loans at 4.5× household income. A house priced at 8× regional median income means a typical household needs a 44% deposit just to qualify for a standard mortgage. That's why London affordability is structurally worse than the Midlands — even if the absolute price gap looks closeable, the income gap isn't.

HM Land Registry Price Paid Data is the actual completion price recorded at HMRC for stamp duty purposes — it cannot be inflated by the seller. ONS UKHPI is constructed jointly by ONS, HM Land Registry and Registers of Scotland, peer-reviewed against academic indices, and used by the Bank of England in monetary policy. postcodes.io is built on Royal Mail's PAF data and ONS Postcode Directory.

We do not adjust for: (1) leasehold lease length or ground rent, (2) condition / refurbishment / extensions since the last sale, (3) very recent (last 3-month) market movements, (4) probate / forced / repossession sales which sell below market. For these, get a RICS Home Survey & Valuation Level 2.

Pair this with the UK Stamp Duty Calculator to size your tax bill, the Home-Buying Affordability Calculator for total upfront cost, and the Mortgage Reality Check to stress-test the monthly payment at higher interest rates.