Fundamentals

Cadastre: what it is and how it differs from a property registry

By Daniel Sardá · Published on July 11, 2026

3 min read597 words

A cadastre is a public land and property information system that identifies and describes parcels; it does not necessarily prove ownership.

A cadastre is a public information system that identifies, maps, and describes land parcels and buildings. It may contain boundaries, area, location, use, buildings, assessed value, and a cadastral reference or parcel identifier.

For general readers, it is useful to think of the cadastre as an organized map and database of real estate. It is not necessarily the system that proves who legally owns each property.

What a cadastre may record

| Type of information | Examples | Common use | |---|---|---| | Geometric | Boundaries, coordinates, area, maps | Identifying and locating parcels | | Physical | Buildings, construction, land use | Planning and valuation | | Fiscal | Assessed value, tax category | Property taxation | | Administrative | Parcel identifier, address, local code | Linking public records and services |

The contents and legal significance of these records vary by country.

Cadastre and property registry are not the same

| Cadastre | Property or land registry | |---|---| | Describes and locates the property | Records legal rights, title, mortgages, or other interests | | Often emphasizes parcels, maps, use, and value | Often emphasizes ownership and legal priority | | May support taxation and planning | Supports legal certainty and public notice of rights |

In some countries the two systems are closely coordinated. In others they are administered separately and may contain inconsistent information. A cadastral entry or tax payment therefore does not always establish ownership.

Fiscal uses

Local or national authorities may use cadastral data to assess property taxes. The assessed value may follow statutory formulas and does not necessarily equal the current market price.

A complete and regularly updated cadastre can make taxation more consistent. An outdated one can distribute tax burdens unfairly by relying on obsolete buildings, values, or boundaries.

Planning and public services

Cadastral information can support zoning, infrastructure, emergency response, environmental management, utilities, and urban development. Parcel-level data helps authorities understand where properties are and how land is being used.

These functions explain the idea of a multipurpose cadastre: a system designed to serve several public needs rather than taxation alone.

References, updates, and errors

A cadastral reference links a parcel or unit to its record. Owners, buyers, professionals, and public agencies may use it to locate plans or connect databases.

Errors can involve boundaries, area, address, building characteristics, or use. The correction process may require surveys, documents, notice to neighbors, or coordination with a land registry. No single procedure applies everywhere.

When cadastral and registry information conflict, the legal consequences depend on national law. A surveyor, registrar, notary, lawyer, or cadastral authority may have different roles in resolving the discrepancy.

Geometric, fiscal, and multipurpose cadastres

A geometric cadastre emphasizes parcel boundaries and mapping. A fiscal cadastre supports valuation and taxation. A multipurpose cadastre integrates data for planning, services, environmental management, and land administration. Real systems often combine these functions.

Frequently asked questions

Does the cadastre prove that I own a property?

Not necessarily. It can provide important evidence, but legal title is commonly handled by a property or land registry. The relationship depends on the country.

What if the cadastre contains an error?

Check the competent authority and compare cadastral data with title documents, registered plans, and a current survey where relevant. Procedures and evidentiary rules vary.

A useful synthesis

A cadastre is public information infrastructure for land and buildings. Its value lies in reliable identification, mapping, valuation, and coordination. Understanding its limits is just as important: describing a parcel and proving rights over it are related but distinct functions.