About

Property data from registries, not listings

Centria provides the prices at which properties actually changed hands, sourced from notarial deeds. We combine them with parcel information from public registries: the local plan, the land registry, environmental risks, utilities and sun exposure.

Why Centria exists

Buying a flat or a plot is among the most significant financial decisions a person makes, yet it is usually based on listings alone. Public institutions maintain registries holding almost all the relevant facts: actual transaction prices, the land's designation in the local plan, flood exposure, soil grade. That data, however, is spread across a dozen separate systems and published in formats intended for public administration. Our role is to consolidate it and present it in a form that supports an informed decision.

The principles we work by

01
Transaction prices, not asking prices

The service is built on the Property Price Registry (RCN) — prices from executed notarial deeds. A listing states the seller's expectation; the deed states the amount actually agreed.

02
Missing data is marked as such

Registry completeness varies: some municipalities publish their local plan as vector data, others only as a scanned resolution, and some counties submit deeds months late. Where data is absent we do not estimate — we state that it is unavailable.

03
Every value cites its source

Each parameter in the report names its source registry and the date the data reflects. The AVM valuation is presented with a confidence range — a model presenting a single figure as certain would be misleading.

Where the data comes from

We rely exclusively on public sources and official registries. The principal ones are listed below.

RCNProperty Price Registry — transaction prices from notarial deeds
EGiBLand and Building Registry — parcel boundaries, land use, soil grades
MPZPLocal spatial development plans — designation and ratios
General planPlanning zones and municipal urban standards
GUGiKOrthophoto, historical imagery, 1 m LiDAR elevation model
Wody PolskieSpecial flood hazard areas
GDOŚ / NIDNature protection forms, monuments and conservation zones
PIG / MIDASMineral deposits, mining areas and landslides (SOPO)
GUS / BDLDemographics and regional statistics
GDDKiA / CPKPlanned and under-construction roads and railways
KPOŚKSewerage agglomerations and infrastructure
dane.gov.plStatutory developer asking prices (housing price transparency act)

Service operator

Centria is operated by:

EGALEN Spółka z ograniczoną odpowiedzialnością
KRS
0000907613
NIP
5272962187

Full registry details and the correspondence address are in the Terms of Service. Terms of Service

Scope of responsibility

Centria does not provide licensed property appraisal services. The analyses and the AVM valuation are informational and do not constitute a formal valuation report under the Polish Real Estate Management Act. We provide neither investment nor legal advice. Before transacting, we recommend verifying key findings in the official extract from the local plan, the land and mortgage register, and with a notary.

See the service applied to a real parcel

Open the map, or review a sample report generated live from the registries.