In brief

• The Ministry of Development and Technology has prepared a draft amendment to the developer act, number UD361, which prohibits raising the price of an apartment after the contract with the buyer has been signed.
• The new version of the draft covers every price increase, not only indexation, and may also apply to contracts concluded before the provisions enter into force.
• The draft provides for the return of the reservation fee in four times its amount if the contract does not come into effect through the developer's fault, instead of the current two times.
• The main provisions are to enter into force three months after publication in the Journal of Laws, and the liability of partners in limited liability companies after 24 months.

Ban on price increases after signing the contract

The Ministry of Development and Technology has prepared a draft amendment to the developer act, marked with number UD361. The latest version, published on the website of the Government Legislation Centre, prohibits developers from raising the price of an apartment after the contract with the buyer has been signed. Earlier proposals concerned only indexation, that is changes resulting from indexing. (Ustawa deweloperska 2026: zakaz podwyżek cen | finwire.pl – finwire.pl)

What else the draft provides

The draft also limits the possibility of withdrawing from contracts, introduces new rules for accepting premises, and increases developers' liability for defects in apartments. According to lawyers, the ban on price increases may also cover contracts signed before the new provisions enter into force. (Rząd szykuje rewolucję dla deweloperów. Zakaz podwyżek cen mieszkań po umowie – businessinsider.com.pl)

For the buyer, this means the return of the reservation fee in four times its amount if the contract does not come into effect through the developer's fault. Previously, the refund amounted to two times this fee. The provision comes from the draft of 11 May 2026.

Deadlines and next steps

Work on the amendment has been ongoing for several months. The main provisions are to enter into force three months after publication in the Journal of Laws, and the liability of partners in limited liability companies only after 24 months.

Position of the industry and lawyers

Marcin Żak from the Wolf Theiss law firm assesses the proposed provision as watertight and clearly pro-consumer. The development industry, on the other hand, warns that overly broad wording may have negative effects for the market.

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