Housing prices have been publicly available on investment websites for a year now. The next step is to standardise the way this information is submitted to the state system so that the data is consistent and can be used effectively.
Yesterday, the Senate passed an amendment to the Act on the Protection of the Rights of Buyers of Residential Units or Single-Family Houses and the Developer Guarantee Fund. The amendment does not change the rules for publishing housing prices. Instead, it introduces an obligation to submit data to the dane.gov.pl portal using a structured format designed for machine reading. The solution is intended to ensure consistency of data published on dane.gov.pl and make it easier to process and analyse automatically.
Since July 2025, some developers, and since September last year all development companies, have been required to publish on investment websites the prices of flats and houses on offer, the prices of parking spaces and ancillary rooms, as well as information on price changes during the sales process. Customers have gained access to information that previously often required contacting a sales office. Today, this information is widely available and forms one of the key elements of offers addressed to buyers.
“Last year’s regulations changed the way offers are presented on the primary market. For development companies, this meant the need to adapt sales systems, websites and internal processes. Today, this model is already functioning on the market and has become part of everyday practice,” says Bartosz Guss, Director General of the Polish Association of Developers.
The structured data format was developed by the Ministry of Digital Affairs and made available on the dane.gov.pl portal following consultations, including with the Office of Competition and Consumer Protection and the Polish Association of Developers. Until now, its use had been recommended, and a significant share of development companies already use it. Once the new regulations enter into force, it will become a mandatory standard for the entire market.
“In practice, the scope of information provided to customers is not changing. What is changing is the way this data is reported to the state system. The introduction of a single structured format will allow data to be submitted according to a common standard, making it easier to read and compare automatically,” emphasises Aleksandra Krupińska, lawyer at the Polish Association of Developers.
During the legislative process, the way in which the rules for submitting data are to be defined also changed. Initially, the draft act provided that the uniform reporting format would be specified in the form of an announcement by the minister responsible for digital affairs. The Polish Association of Developers pointed out that, for businesses, a regulation would provide greater predictability and legal certainty in applying the rules. Ultimately, this solution was included.
The Polish Association of Developers remains ready for further discussions on the detailed shape of the reporting standard, drawing on the experience of companies that have already been applying the new rules for publishing and submitting data for several months.
“For businesses, predictability and clarity of regulations are crucial. The more precisely the reporting rules are defined, the easier it will be to ensure the high quality and consistency of the data submitted. This is in the interest of all market participants. Clear reporting rules serve both companies and people using publicly available data on the housing market,” adds Bartosz Guss.
From the very beginning of work on the housing price transparency act, the Polish Association of Developers supported solutions aimed at increasing transparency in the housing market. Last year, the Association prepared detailed guidelines for companies on implementing the new obligations and conducted information and training activities for the industry.
The amendment passed by the Senate will now return to the Sejm, which is scheduled to meet on 15–17 July.
