When did average house prices in Old St. Mellons reach their peak? May 2026

Average house prices in Old St. Mellons peaked at £714,333 in May 2026, the highest monthly average since January 1995. Across the 12 months to September 2026, the average is £344,566.

Peak average
£714,333
Latest 12-month average
£344,566
Data up to
September 2026

Sold prices from HM Land Registry, not asking prices. How we calculate this

All house prices in Old St. Mellons

What was the average house price in Old St. Mellons each year?

Average sold price in each calendar year, newest first. 2026 had the highest yearly average of the past 10 years.

Average house price in Old St. Mellons by year
YearAverage price
2026 (to September)Highest£348,586
2025£324,242
2024£317,765
2023£288,645
2022£295,723
2021£284,082
2020£268,295
2019£241,604
2018£286,524
2017£243,014

How have house prices in Old St. Mellons changed over time?

Monthly or yearly average sold price. Choose a time range to explore.

What else do people ask about Old St. Mellons?

More quick answers on house prices, sales, areas, green space, crime, air quality and listed buildings in Old St. Mellons.

Where does this data come from?

Price information is from HM Land Registry, location boundaries are from OpenStreetMap, and households and population are from Nomis Census 2021 postcode estimates (21 March 2021). Parks and green space are from OS Open Greenspace. Contains OS data © Crown copyright and database right 2026. Crime is from police.uk street-level data. Contains public sector information licensed under the Open Government Licence v3.0. Source: police.uk. Listed buildings and scheduled monuments are from Historic England and Cadw, and conservation areas from planning.data.gov.uk. Designated Historic Asset GIS Data, The Welsh Historic Environment Service (Cadw), licensed under the Open Government Licence. Air quality is from Defra modelled background pollution maps. Contains public sector information licensed under the Open Government Licence v3.0. Source: Defra modelled background pollution, 2025.

Last updated 11 November 2026 at 01:33 with the latest Land Registry data (September 2026). The Old St. Mellons dataset covers 134 postcodes.

Read our full data methodology

Contains HM Land Registry data © Crown copyright and database right 2026. This data is licensed under the Open Government Licence v3.0.

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