Integrations

dane.gov.pl

Polish state open data portal

dane.gov.pl is the Polish state open data portal, where property developers publish asking prices of apartments and houses daily under price transparency law.

Official site

What is dane.gov.pl?

dane.gov.pl is the Polish state open data portal, where public institutions and other bodies publish datasets in machine-readable formats. Following an amendment to the Polish developer act, known as the price transparency law, it also carries the asking prices of apartments and single-family houses sold by property developers. Developers have to update this data every day.

How we use it at Koda Plus

Two property developer websites we built on Webflow are connected to dane.gov.pl: “Website and apartment catalogue for WJ Investment” and “Two developments for Firma Inwestycyjna JW”. In the WJ Investment catalogue, prices refresh daily and feed the register required by the price transparency law, while the Firma Inwestycyjna JW site sends its price history to the register every day. Both projects use Supabase alongside Webflow.

Used in

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When it makes sense

  • You sell apartments or houses as part of a residential development
  • Unit prices change often and have to be reported every day
  • The price list on the website and the data for the portal should share one source
  • The unit catalogue runs on a database rather than hand-edited tables

Frequently asked questions
dane.gov.pl

  • Do developers in Poland have to report apartment prices to dane.gov.pl?

    Yes. The amended developer act requires developers to disclose the asking prices of apartments and single-family houses on their website and to make that data available on the dane.gov.pl portal. The data on the portal has to be updated daily.

  • What apartment data goes to dane.gov.pl?

    The developer's details and the location of the development, and for each unit the price per square metre and the total price, prices of related items such as parking spaces or storage rooms, and any other charges the buyer has to pay. On the development's website the developer also has to show the history of price changes.

  • Can price reporting to dane.gov.pl be automated?

    Yes. If unit prices live in the database behind the development's website, the file for the portal can be generated automatically every day, with no retyping of the price list. On the WJ Investment and Firma Inwestycyjna JW websites, price data goes to dane.gov.pl every day.

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