On 11 September 2025, an amendment to the Developer Act entered into force, providing for new requirements for developers. One of these requirements is to maintain websites stating the date of sale or the conclusion of the first reservation agreement, and the prices per square meter of each residential unit or single-family house on offer. Websites must also state the prices of the entire property or the relevant parts covered by the agreement. The published prices must correspond to those set out in the developer agreement and must include VAT.

Any price changes must also be published on the website, with information on previous prices, enabling buyers to compare offers over time. In addition, developers’ websites are required to state the prices of appurtenant premises and other monetary obligations that the buyer has towards the developer under the property transfer agreement. They are also required to provide access to the general section of the information prospectus for a given development project.

The purpose of introducing price transparency is to make the real estate market more transparent as well, and to limit the setting of excessively inflated prices. Ensuring consistency between prices presented in offers and those included in agreements with buyers eliminates the possibility of price manipulation and increases trust in the seller.

A breach of these obligations will be treated as a practice violating the collective interests of consumers within the meaning of Article 24(2) of the Act of 16 February 2007 on Competition and Consumer Protection. Importantly, the amendment introduces a rule that if there is a discrepancy between the published price and the price offered at the time of concluding the agreement, the buyer will have the right to demand that the agreement be concluded at the most favorable price for them.

Furthermore, providing price information only on an “individual” basis is no longer sufficient to meet the information obligations, and failure to publish prices on publicly accessible websites will be considered a practice violating the collective interests of consumers. The new legislation entails a range of new and additional administrative and organizational obligations. At the same time, the lack of precise guidelines regarding the form and scope of the published data may lead to uncertainty and potential disputes with buyers.