Legal notice

Last updated: 1 November 2026

Translation for information only; the German version is authoritative.

Provider (Section 5 DDG, German law)

Jörg Koerfer Consulting (JKC)
Owner: Jörg Koerfer
Markt 10
47877 Willich
Germany

Contact

Email: joerg.koerfer.consulting@gmail.com

Responsible for content (Section 18(2) MStV)

Jörg Koerfer, address as above

About the data

This website is an independent statistical analysis of official open data (France: DVF from the tax administration DGFiP, INSEE, IGN; England and Wales: HM Land Registry, ONS; Ireland: PSRA, CSO, Tailte Éireann; Netherlands: CBS, Kadaster; Finland: Statistics Finland; Sweden: SCB; Austria: Statistik Austria; Portugal: INE, DGT; Poland: GUS, GUGiK) and not an official service. It is not affiliated with these authorities or with the property portals it links to; their names are trademarks of their respective owners.

Liability for content

The content is prepared with care, but we give no guarantee that it is correct, complete or up to date. Figures are medians or averages of past sales; they are not a valuation of any individual property and do not replace advice on buying, financing, law or tax.

Liability for links

The website links to third-party offerings, in particular property portals and the data sources. Their providers alone are responsible for their content. No infringements were apparent when the links were set; we remove any link promptly once we become aware of a problem.

Copyright and licences

Texts, design and code: © 2026 Jörg Koerfer Consulting (JKC). Data, with our own calculations: France: DGFiP (DVF), INSEE and IGN under the Licence Ouverte / Open Licence 2.0; département boundaries from france-geojson (Grégoire David), based on IGN data. England and Wales: HM Land Registry and ONS under the Open Government Licence v3.0; price per m² on the Europe map from Chi, Dennett, Oléron-Evans, Morphet (UCL), "House Price Per Square Metre in England and Wales, 1995–2024", UK Data Service ReShare 857911, under CC BY 4.0. Ireland: PSRA Property Price Register (re-used under the PSRA's conditions), CSO and Tailte Éireann under CC BY 4.0. Netherlands: CBS under CC BY 4.0. Finland: Statistics Finland under CC BY 4.0. Sweden: SCB under CC0. Austria: STATISTIK AUSTRIA under its terms of use (data processed) and open data under CC BY 4.0. Portugal: INE and DGT (CAOP) under CC BY 4.0. Poland: GUS (Bank Danych Lokalnych) under CC BY 4.0, boundaries GUGiK (PRG), free to use. Full source details are on each country page under "Method & sources".