Source: House Price Index - HPI
House Price Index (HPI) data is provided by gov.uk as a single file, not small but not large by any means. The data is available monthly and dates back to 1968.
The House Price Index (HPI) is a valuable tool for understanding how the average house price has changed over several decades.
https://www.gov.uk/government/statistical-data-sets/uk-house-price-index-data-downloads-june-2025
The current file size is just over 32MB, so not great, but not terrible. Easy one to upload and manage.
Provided under the Open Government License V3.0
It’s a large dataset by field with 64 in total.
Along with the average price, you can break it down between:
- Regions → England, Wales, Scotland and Northern Ireland. So you can drill down into each Nation.
- Property type → Detached, Semi, Terraced and flat.
- AveragePrice → average property price (main headline figure).
- Index → HPI index (base = Jan 2015 = 100).
- IndexSA → seasonally adjusted index.
- 1m%Change → monthly change.
- 12m%Change → annual change.
- AveragePriceSA → seasonally adjusted average price.
- SalesVolume → number of sales (lagged, back-filled later).
- Most of the rest are indices, used for statistical comparison, less digestible but be useful depending on need.
Most useful in practice
For dashboards/analysis, you’ll likely use:
- AveragePrice, 1m%Change, 12m%Change (headline)
- Property-type splits (DetachedPrice, SemiDetachedPrice, etc.) for structural insights
- Funding split (CashPrice, MortgagePrice) to show how cash vs mortgage differ
- Buyer type (FTB vs FOO) for affordability trends
- New vs Old property splits
- SalesVolume (with caveat: lags by a few months, often blank for the current month)
Notes:
FTB – First Time Buyer
FOO – Former Owner Occupier (Just means someone who owned a house is moving or buying another)
New – Brand new house
Old – Every other property that is not brand new
