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Next publication of UK HPI
The October 2023 UK HPI will be published at 9.30am on Wednesday 20 December 2023. See the calendar of 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.
Methodology change for new build property
Because of the impact of the coronavirus (COVID-19) pandemic on both the number and supply of housing transactions, some methodology changes have been made. The processing of “new build” properties has been more affected than the processing of “old build” properties. To minimise impact on our estimates, we have pooled new build transactions for certain months:
January 2023 includes new build transactions from December 2022 and January 2023
February 2023 includes new build transactions from January 2023 and February 2023
March 2023 includes new build transactions from February 2023 and March 2023
April 2023 includes new build transactions from March 2023 and April 2023
May 2023 includes new build transactions from April 2023 and May 2023
June 2023 includes new build transactions from May 2023 and June 2023
July 2023 includes new build transactions from June 2023 and July 2023
August 2023 includes new build transactions from July 2023 and August 2023
September 2023 has not been affected because new builds are excluded from the model for the first estimate because of the nature of their processing.
These changes might lead to larger revisions to published estimates than usual as we reduce the reliance on pooling. Further information on how we usually process the new build properties can be found in the HMLR’s Quality and Methodology guidance.