Mortgage based indices employ estimated current values for those properties the subject of loans. Mortgage data reflect both numbers of loans and current lender policy. The Land Registry LR alone provides factual prices, including those of properties bought with cash, for every transaction in England and Wales; only our AcadHPI and Acadametrics Prices and Transactions series use every such price.

• AcadHPI comprises the average of every transaction price recorded at the Land Registry, smoothed, mix and seasonally adjusted; a forecasting model predicts the LR outcome pending full data availability; accuracy is shown on our website, monthly for FT.com, principal media and our “on request” mailing list



• ACADAMETRICS PRICES AND TRANSACTIONS APAT – the essential factual data, provides the smoothed average of every LR transacted price, at region and county/London borough level, by property type; delivered monthly



• ILLUSTRATIVE HOUSE PRICE CALCULATOR uses APAT for illustrative valuations for free public use; updated monthly for the ITN and other websites



• INDEX DEVELOPMENT led by Dr Stephen Satchell