Price transparency for flats (in Polish, jawność cen mieszkań) means you can check the real price of a specific flat from a developer in two places. The first is the developer’s own website: since 11 July 2025 it must show the price of every flat on offer together with the history of changes. The second is the dane.gov.pl portal, where the ministry publishes the same data the developer submits to it once a day. Transaction prices are free to view in the Real Estate Price Register at geoportal.gov.pl (since 13 February 2026). Legal position: September 2026.
Does the advert say “from … zł/m²” while the sales office quotes a different amount? Below: where to find the price list, how to read a price history and what to do if the contract shows a different figure.
Since when does price transparency apply, and who must comply?
The duty was introduced by the Act of 21 May 2025 amending the Act on the protection of the rights of buyers of flats or single-family houses and on the Developer Guarantee Fund (Dz.U. 2025 poz. 758). It added articles 19a and 19b to the Developer Act (ustawa deweloperska). The provisions came into force on 11 July 2025. Developments where sales had started earlier had 2 months to adapt, that is until 11 September 2025. The current consolidated text of the Developer Act is Dz.U. 2026 poz. 880 (as at September 2026).
The duty rests on the developer. Art. 19a ust. 4 extends it to a developer selling completed units and to a business selling a unit from a development for the first time. The provision does not name private individuals selling a flat on the secondary market. For how buying differs in the two markets, see primary or secondary market.
From 11 November 2026 the format of the daily reporting changes. The Act of 17 July 2026 (Dz.U. 2026 poz. 1077) requires the developer to submit data as an electronic document with a structure set by the minister. As at 27 September 2026 the regulation on this has not been published. The amendment does not change the obligations towards the buyer under art. 19a.
What exactly must be public: the flat price, price per m², storage room, parking space, other payments?
Under art. 19a ust. 1 the developer publishes on its own website:
- the price per 1 m² of usable floor area of each flat on offer, and the price of the whole property or the part of it that is the subject of the contract;
- the prices of ancillary rooms (for example a cellar storage unit, a storage room, a garage) and of rights needed to use the flat, if they are not included in the flat’s price;
- any other payments you will make to the developer under the contract transferring ownership.
All amounts are stated including VAT. The same page must carry the general part of the information prospectus (what to check in the developer’s information prospectus), the developer’s registered address, the address of the sales office, how to make contact and the location of the development. The page runs from the start of sales (and, where reservation agreements are used, from before the first one is signed) until the rights under the last contract in the development have been transferred.
If a parking space or storage room is sold separately, find it in the price list before you work out your budget (extra charges in a developer’s price list: the full price). For adverts saying “from … zł/m²” the key rule is art. 19a ust. 3: in adverts the developer must give the address of the page with prices. That is where the price of a specific flat is.
Where to check the price: the developer’s website and dane.gov.pl — how to find the file for a specific development?
The developer’s website. Go to the address given in the advert, open the price list and note the unit number: you will use it to match data from different sources.
dane.gov.pl. Once a day the developer submits data to the minister responsible for digital affairs. The minister publishes it on dane.gov.pl, and the Act calls it high-value data (art. 19b). How to find a file:
- Type “Ceny ofertowe mieszkań” and the name of the developer or its company into the portal’s search. As at 27 September 2026 there are more than 14,000 such datasets. These are datasets, not developments.
- Open the latest file and check the column with the location of the development.
- Find the row with your unit number. The ministry’s template does not provide for floor area, floor or number of rooms. Until 10 November 2026 the template is also not mandatory, so developers’ files differ in layout. From 11 November 2026 the data structure will be set by a regulation (Dz.U. 2026 poz. 1077). Check the floor area and floor on the developer’s website.
- In a file that follows the template, the price per m², the price of the flat and the prices of storage rooms or other payments each carry the date from which that price applies.
Some datasets are updated “daily” and have an archive of daily files from which you can read prices from earlier days. Not every dataset has an archive. Some developers publish a single “current day” file that is replaced by a new one each day. In that case, check the price history on the developer’s website.
How to read a price history, and what “lowest price in the last 30 days” means for a discount
The developer keeps the price history on its website. Art. 19a ust. 2 requires it, at every change, to update the information on the day of the change, state the date of the change and keep the earlier data from the start of sales: the old price, the new price and the date. Compare the date of the advert with the price in force that day.
The “lowest price in the last 30 days” rule comes from a different act, on informing about the prices of goods and services (consolidated text Dz.U. 2023 poz. 168, art. 4 ust. 2). When a price is reduced, the lowest price from the 30 days before the reduction is shown next to the new price. Whether that rule applies to flats from a developer is not settled. Art. 2 of that act excludes price information regulated by separate acts, and price transparency for flats is regulated by the Developer Act. We found no published position of UOKiK on the point (as at September 2026).
In practice: when a developer announces a discount, check in the history under art. 19a ust. 2 what the price of the flat was in the 30 days before the discount, and whether it was raised just before it.
List price versus transaction price: where to check what flats actually sold for
The developer’s list shows the asking price. What flats actually sold for is shown by the Real Estate Price Register (RCN). Since 13 February 2026 RCN data has been provided free of charge (Act of 26 September 2025, Dz.U. 2025 poz. 1542).
At geoportal.gov.pl open the “Rejestr Cen Nieruchomości” module. You will see the price, the date of the document, the type of property, the area and the type of market: primary or secondary. Warsaw is in the service, but with a delay: as at 27 September 2026 the latest Warsaw transactions in RCN date from May 2026. The units layer also contains garages and non-residential units, so filter by property type.
The second source is only being built. Under the Act of 17 October 2025 (Dz.U. 2025 poz. 1669), from 2 April 2027 Portal DOM, run by the Insurance Guarantee Fund (UFG), is to publish average or median transaction prices and the number of transactions on the primary and secondary markets. A statistic will appear only if the sample contains at least 6 units and 6 different buyers, and the chosen period may not exceed 2 years (legal position as at September 2026). According to the description of the bill in the Sejm, access is to be free of charge.
What to do if the contract price differs from the price list
Art. 19a ust. 6: if the price on the developer’s website differs from the price offered when the contract is concluded, you are entitled to demand a contract at the price most favourable to you. How to prepare:
- Before your visit, save the price page (a screenshot with the date visible) and download the dane.gov.pl file from that day.
- Check the calculation. In developer contracts concluded from 13 February 2026, including a reservation agreement, the price of the unit is set as the usable floor area in m² multiplied by the price per 1 m² (art. 5a). The area is measured under the Polish Standard in force on the day the building permit application or building notification was submitted.
- Report any discrepancy in writing before signing and cite art. 19a ust. 6.
- The provision speaks of the price “when the contract is concluded”. Whether it also covers a reservation agreement is not stated directly in the Act, so before reserving, ask for the price of the flat in writing.
Who enforces these rules and where to report a problem
The rules are enforced by the President of UOKiK (the Office of Competition and Consumer Protection). A breach of art. 19a ust. 1–4 and of the reporting duty in art. 19b is a practice infringing collective consumer interests. The penalty can be up to 10% of the previous year’s turnover (art. 106 ust. 1 pkt 4 of the Act on Competition and Consumer Protection, Dz.U. 2025 poz. 1714). A manager who intentionally allowed the breach faces up to PLN 2,000,000 (art. 106b ust. 1, legal position as at September 2026). The President of UOKiK may also approach the developer without opening proceedings; the deadline for a reply may not be shorter than 14 days.
In October 2025 the Minister of Funds and Regional Policy reminded the market that a price of “PLN 1” does not count. The law also treats “bait advertising” as unfair in all circumstances: an offer at a stated price without disclosing that the business may have reasonable grounds to think it will not supply the product at that price (art. 7 pkt 5 of the Act on Counteracting Unfair Market Practices).
Where to report (as at September 2026):
- UOKiK deals with collective interests, not an individual dispute (art. 24 ust. 3 of the Act on Competition and Consumer Protection). You can send a tip-off to uokik@uokik.gov.pl or to pl. Powstańców Warszawy 1, 00-950 Warszawa.
- Your individual case: a city or county consumer ombudsman (rzecznik konsumentów; there are more than 370 in Poland) and the consumer helpline 801 440 220 or 222 66 76 76, on working days 10:00–18:00, charged at the operator’s rate. The form is at dlakonsumentow.pl.
If you do not read Polish: what to keep in mind when checking a price
All the sources in this article are in Polish: the developer’s website, the dane.gov.pl portal and geoportal.gov.pl. Type the Polish terms into the search, for example “Ceny ofertowe mieszkań”, plus the developer’s name exactly as it is written on the development’s website. Note the unit number from the price list word for word: you will use it to match the website, the dane.gov.pl file and the contract. Asking for the price in writing and saving the page with its date is worth doing in any case, whatever language you read in. If you wish, we will go through the price list and price history of your chosen flat with you in English: we serve clients in 7 languages.
How we show prices in the Jawno catalogue: a source and a date next to every price
Next to every price in the catalogue of new flats in Warsaw we give the date of the data and the source, for example “Data as at … · source: developer’s price list”. Where we show a price history, we state where it comes from: the developer’s file on dane.gov.pl or our own observations from a specific date. Our price is a reading taken on a given day. For comparison with the contract, use the developer’s price list, because art. 19a ust. 6 refers to that. See a difference? Write to us and we will check both sources.
FAQ
Since when must developers in Poland publish flat prices?
Since 11 July 2025, under the Act of 21 May 2025 (Dz.U. 2025 poz. 758). Developments where sales had started earlier had until 11 September 2025 to comply. From 11 November 2026 (Act of 17 July 2026, Dz.U. 2026 poz. 1077) only the format of the daily data reporting to the ministry changes, not the duty to show prices on the developer’s website.
Where can I find a developer’s official flat prices in Poland?
On the developer’s website, whose address must appear in its adverts, and on the dane.gov.pl portal: search for “Ceny ofertowe mieszkań” and the developer’s name. As at 27 September 2026 there are more than 14,000 such datasets. The developer submits data once a day, and in a file that follows the ministry’s template every price carries the date from which it applies.
What must a developer’s advert with a price “from … zł/m²” contain?
The address of the website where the developer publishes the price of every flat on offer and its price history (art. 19a ust. 3 of the Developer Act, consolidated text Dz.U. 2026 poz. 880, legal position as at September 2026). A “from” price in an advert does not replace the price of a specific flat. You find that in the price list at the given address, together with the price of a storage room or garage.
The developer wants a higher price in the contract than on its website. What can I do?
You are entitled to demand a contract at the price most favourable to you (art. 19a ust. 6 of the Developer Act, legal position as at September 2026). Before your visit, save the price page with the date visible. Also check the calculation: since 13 February 2026 the contract price is the usable floor area in m² multiplied by the price per 1 m².
Where can I check actual transaction prices of flats in Warsaw?
In the Real Estate Price Register (Rejestr Cen Nieruchomości) at geoportal.gov.pl, free of charge since 13 February 2026. As at 27 September 2026 the latest Warsaw transactions in that service date from May 2026. Under the Act, from 2 April 2027 Portal DOM is to publish average or median transaction prices, split into the primary and secondary market.
Visiting a developer’s sales office? Write to us first
Write to us before you go to the sales office. We will check the price list and the price history of your chosen flat on the developer’s website and on dane.gov.pl, and if you wish, we will go to the meeting with you. We do not charge you a fee for helping you buy a flat from a developer (what an estate agent costs when you buy from a developer). Our remuneration on the primary market comes from agreements with developers.
Telephone: +48 692 649 839 · E-mail: infojawno@gmail.com
This text is for information only and is not legal advice.