UK House Price Index: reports
Source: gov.uk (2025-12-05)

Reports for the UK House Price Index (UK HPI) for England, Scotland, Wales and Northern Ireland, including in CSV format.

This collection is available in Welsh (https://www.gov.uk/government/collections/mynegai-prisiau-tai-y-du-adroddiadau.cy).

The UK House Price Index is a National Statistic. The Northern Ireland House Price Index (https://www.finance-ni.gov.uk/articles/northern-ireland-house-price-index) is calculated and published quarterly.

Republishing data (https://www.gov.uk/government/publications/about-the-uk-house-price-index/about-the-uk-house-price-index#republishing-data) explains the conditions of use. By downloading the data you are agreeing to those conditions.

Next publication of UK HPI

The October 2025 UK HPI will be published at 9.30am on Wednesday 17 December 2025. See the calendar of release dates (https://www.gov.uk/government/publications/about-the-uk-house-price-index/about-the-uk-house-price-index#uk-house-price-index-release-dates) for more information.

Northern Ireland sales volumes

We’ve changed the way we publish the Northern Ireland sales volumes and corrected the way we include them in the UK figures. We’ve produced a monthly estimate by dividing the total sales volumes for the quarter in Northern Ireland by 3.

We previously included the quarterly Northern Ireland data in the monthly UK sales volumes data, which resulted in higher than expected sales figures.

Data revisions

Following the UK House Price Index (UK HPI) estimates being revised from January 2021 onwards on 20 March 2024, to make use of price data processed outside the UK HPI’s normal 12-month revision period, we have identified an error in the count of cash and mortgage transactions for data spanning January 2021 and December 2022. The indices and price levels of the UK HPI were not affected.

Counts of cash and mortgage transactions for January 2021 to December 2022 were corrected in the UK HPI data published on 17 April 2024 and following UK HPI releases.

Methodology change for new build property

It takes time for property transactions to be processed and become available in price data and property attributes data for inclusion in the UK HPI. This process takes longer for new builds than for existing builds, which results in a lower proportion of new build sales being available to calculate the initial price and index estimate, than for existing build sales. Therefore, we suppress the numbers of verified sales for new builds for the most recent two months (or latest two quarters for Northern Ireland). However, we do have enough sales to ensure headline UK HPI statistics are robust and accurate.

Because of the impact of the coronavirus (COVID-19) pandemic on both the processed number and supply of housing transactions, some temporary methodology changes were made between 2020 and 2025 due to the greater impact on the processing of “new build” properties than the processing of “old build” properties. To help address this, pooled new build transactions for certain months in England and Wales since 2020. Usually, we applied “new build pooling” for six months of estimates: 2nd to 7th estimates.

On 20 August 2025 we introduced an improvement to HPI’s imputation method for Great Britain, applied from January 2025, increasing accuracy of initial UK HPI estimates. Analysis indicates this improvement is more effective than pooling, so pooling was phased out, only applied for 2nd to 7th estimates for periods which were not calculated using the improved imputation method. This meant new build pooling was phased out, and is no longer applied to any monthly estimates from the 22 October 2025 release. Further information on how we process new build properties can be found in the HMLR’s Quality and Methodology guidance (https://www.gov.uk/government/publications/about-the-uk-house-price-index/quality-and-methodology).

The UK HPI imputation improvement introduced on 20 August 2025 reduces initial over-estimation of new build estimates in provisional estimates. Since this methods improvement increases the accuracy of our initial estimates, we expect overall revisions between provisional (1st) and final revised (13th) UK HPI estimates to be smaller moving forwards. More detail about this methods improvement is available in section 4.9 of HMLR’s About the UK House Price Index document (https://www.gov.uk/government/publications/about-the-uk-house-price-index/about-the-uk-house-price-index#improvements-in-2025).

ONS and HMLR have been working collaboratively to improve transactions volumes available for use in UK HPI and reduce the size of revisions. In 2024, HMLR successfully returned to processing over 40% of HMRC’s provisional sales estimate for UK HPI’s first estimate (the target specified in the UK HPI Quality and Methodology (https://eur03.safelinks.protection.outlook.com/?url=https%3A%2F%2Fwww.gov.uk%2Fgovernment%2Fpublications%2Fabout-the-uk-house-price-index%2Fquality-and-methodology&data=05%7C02%7CMoni.Amin%40ons.gov.uk%7C0c7377df37b34cb5fbd008dd97910c10%7C078807bfce824688bce00d811684dc46%7C0%7C0%7C638833371400863893%7CUnknown%7CTWFpbGZsb3d8eyJFbXB0eU1hcGkiOnRydWUsIlYiOiIwLjAuMDAwMCIsIlAiOiJXaW4zMiIsIkFOIjoiTWFpbCIsIldUIjoyfQ%3D%3D%7C0%7C%7C%7C&sdata=xCpkPcPvU4x3iJs0WQJ6YiHg082IK6z2dYayhrmxLBY%3D&reserved=0) guidance). UK HPI sales volume estimates for older periods and new builds remain lower than historical averages, but continue to improve.

Users are advised that estimates for new build properties may be less representative and revisions to published estimates for new builds may be larger than they have been historically. Users should note the uncertainty (https://www.ons.gov.uk/methodology/methodologytopicsandstatisticalconcepts/uncertaintyandhowwemeasureit#what-is-uncertainty-) around new build estimates because of low availability of new build data for the most recent months.

ONS will continue to monitor revisions and identify potential further methods improvements in the future.