Data sources
Proppys combines open government data with licensed commercial sources. This page lists where each dataset comes from and the licences it is used under.
HM Land Registry
Sold prices, price trends, price-per-square-foot analysis and flip detection are derived from HM Land Registry Price Paid Data. Contains HM Land Registry data © Crown copyright and database right 2026. This data is licensed under the Open Government Licence v3.0.
UK House Price Index
Regional house price trends and inflation adjustments use the UK House Price Index, produced by HM Land Registry, Registers of Scotland, Land and Property Services Northern Ireland and the Office for National Statistics. © Crown copyright, licensed under the Open Government Licence v3.0.
Energy Performance Certificates
Floor areas, energy ratings and property attributes are derived from the Energy Performance of Buildings Register, published by the Ministry of Housing, Communities and Local Government. © Crown copyright, used under the register's open data terms.
Office for National Statistics
Ownership and tenure breakdowns use Census 2021 data (England and Wales). Postcode geography uses the ONS Postcode Directory and the postcodes.io API. Source: Office for National Statistics, licensed under the Open Government Licence v3.0. Contains OS data © Crown copyright and database right; contains Royal Mail data © Royal Mail copyright and database right.
Council scheme information
Council empty-home scheme and incentive details are compiled from official council and UK government web pages (Open Government Licence v3.0 content) and verified against the published source, which is linked from every scheme entry.
Market yield and rent data
Rental values, yields and market demand indicators are supplied under commercial licence by PropertyData.co.uk. Figures are indicative estimates, not guarantees of income.
Auction listings
Auction lot details are aggregated from publicly available auction house listings and are the property of the respective auction houses. Always verify details, view the legal pack and confirm guide prices with the auction house before bidding.