How to find a parcel
Type an address or place name into the search box, zoom in to the right spot and click the parcel outline. If you know the full parcel identifier, enter it in the parcel-number tab, for example 120611_4.0017.4735/2. The identifier combines the cadastral unit code, the precinct number and the parcel number, so it points to exactly one parcel. A bare number such as 123/4 repeats in many precincts. You will find the identifier in a land-register extract, in the notarial deed and often in the sale listing.
Where the data come from
Parcel boundaries and numbers come from the National Integration of Land Records run by GUGiK, which combines services published by county offices. After a click, the parcel is identified in the ULDK service and its full outline is downloaded. The report then checks that outline against further sources: local and general plans from the national plan integration and the Urban Planning Register, ISOK flood-hazard maps, GDOŚ protected areas, SOPO landslides, GIOŚ air-quality measurements, the heritage register, roads and objects from OpenStreetMap and prices from the Real Estate Price Register.
How to read the report
The report collects data in eight categories: parcel boundaries, surroundings and access, flood risk, air quality, planning and buildings, terrain and nature, utilities and networks, and transaction records. Each item names its source. When a service does not respond or the data do not cover the location, the report says so instead of guessing. No plan in a source does not mean there is no plan, and no network in OpenStreetMap does not mean there is no connection. You can share the report with a link and save it as a PDF.
Limitations
The map and report are a preliminary analysis of public data, not an official register extract, a valuation or legal advice. Cadastral boundaries can differ from the situation on the ground, and some county services publish data late or with interruptions. Before buying, confirm the legal status in the land and mortgage register, the zoning at the municipal office and connection terms with the network operators.
