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Where our figures come from

Every price, commute time and metro line on the site has a source and a date. Below we explain where we get them, how we process them and what we do not guarantee.

Developer flat prices

Licence
CC0 1.0 (some datasets may be CC BY 4.0 — in that case we credit the dataset’s author)
As of
04/10/2026 (22 developments with prices from dane.gov.pl)

Since 11 July 2025 developers have been required to publish asking prices of flats as open data (Art. 19b of the Act on the Protection of the Rights of Purchasers of Residential Units or Single-Family Houses and on the Developer Guarantee Fund — ustawa o ochronie praw nabywcy lokalu mieszkalnego lub domu jednorodzinnego oraz o Deweloperskim Funduszu Gwarancyjnym). We download the latest file from each dataset and process it ourselves: median price per m², price range and number of units.

For every price we show the date of the developer’s file and a link to the dataset.

The other developments (16 developments) are shown without a price — it is available on request.

Public transport commute time

Licence
ZTM timetable data terms of use
As of
estimate from a simplified model

Every commute time on the site is an estimate. We use a simplified model: the distance to the nearest operating M1 or M2 metro station, walking or taking a bus or tram there, 3 minutes of waiting, approx. 2 minutes of metro travel per stop and 4 minutes for a change at Świętokrzyska. The result is rounded to 5 minutes.

The model does not use the ZTM Warszawa timetable (GTFS). Actual times depend on traffic, delays and the time of day.

Metro lines

Licence
public information, our own analysis
As of
29/09/2026

Operating lines M1 and M2 are shown with their routes and stations. Sections under construction and in design are shown with a status label and “estimate”. Planned station locations are approximate. We do not give opening dates that have not been announced.

Journey times once a new line opens are our own calculation, not ZTM or Metro Warszawskie data. For lines still in design we give no journey time.

Lines in the site’s data

  • M1 operating 21 stations
  • M2 operating 18 stations
  • M2 · Bemowo – Karolin under construction 3 stations
  • M3 · stage I in design 7 stations, approximate locations

Map

Licence
data: ODbL 1.0 — © OpenStreetMap contributors
As of
base map updated by the provider

Map data and the street network come from OpenStreetMap (© OpenStreetMap contributors, Open Database License). Vector tiles and the base map style are provided by OpenFreeMap using the OpenMapTiles schema. The map is displayed with the MapLibre GL JS library.

Some development locations are approximate — the development’s page says whether the location is exact.

Licences and provider websites

Photos

District photos come from Wikimedia Commons and are shared under free licences. They show the area, not specific developments. We do not use AI-generated images.

General principles

  • A date next to every figure. For prices we give the date of the developer’s file; for commute times, that they are estimates and from which model; for metro lines, the date of the announcement.
  • The developer is responsible for the source data. We process the data; in case of any discrepancy, the developer’s price list and the contract prevail.
  • Asking prices, not transaction prices. We do not publish price forecasts or promises of rising value.
  • Developers’ materials. We do not copy developers’ renderings, photos, floor plans or descriptions. We write the development descriptions ourselves.
  • The order of results does not depend on the agent’s fee.

See the Warsaw Open Price Index