Full Transparency of Real Estate Developer Prices from September 11, 2025

An amendment to the Act of 20 May 2021 on the Protection of the Rights of the Buyer of a Residential Unit or Single‑Family House and on the Developer Guarantee Fund introduces a principle of transparency in the real estate market.

The obligation for developers to publish offer prices of residential units and single‑family houses on their websites will become fully effective on 11 September 2025.

What Is Changing?

Project Website

Every developer will be required to maintain a dedicated website for each investment, which must include, among other things:

• the price per square metre of usable floor area for each property offered, as well as the total price of the property or its part covered by the agreement,
• the price of ancillary premises, such as parking spaces and storage units,
• a history of price changes, including dates.

Electronic Reporting

These data will be transmitted daily to the minister responsible for digitalisation via a public platform.

Advertising and Announcements

In every form of promotion, the developer will be required to indicate the address of the website containing the price information.

Sanctions for Lack of Transparency

A breach of these new obligations will be treated as a practice infringing collective consumer interests. The Office of Competition and Consumer Protection (UOKiK) may impose a fine of up to 10% of the developer’s annual turnover. Moreover, if the price published on the website differs from the price stated in the agreement, the buyer will have the right to rely on the price most favourable to them.

Why Does This Matter?

• For buyers – it ensures greater certainty and comparability of offers.
• For developers – it requires rapid adjustments to websites, sales procedures and reporting processes.