First: what stage is your area at?

In the few areas where cadastral mapping is still in progress, the data are posted (ανάρτηση) for owners to check, and anyone with a legal interest can file a correction application within the deadline set by law. Where the Hellenic Cadastre (Κτηματολόγιο) is already in operation, the entries are called first registrations and they are corrected through the procedures described below.

Types of error

Obvious error: an error that is clear from the title deed and its supporting documents, for example wrong details of the owner. It is corrected by the Head of the Cadastral Office, on application or of its own motion.
Error in the geometric data: the boundaries or the shape of the land parcel do not match reality and the title deeds. A survey plan and a geometric change diagram are always needed here.
Dispute over the right itself: someone else has been registered as owner, or there is a boundary dispute with a neighbour that cannot be settled by consent. The correction is sought through a lawsuit before the Court of First Instance.

Correcting boundaries and area

Since 18 September 2026, applications to correct geometric data are filed online on the Cadastre's metavoles platform. The owner logs in with Taxisnet credentials (the Greek tax-system login), files the application and appoints an engineer and a court bailiff of their choice. The engineer registers the code of the geometric change diagram (διάγραμμα γεωμετρικών μεταβολών), which shows the requested correction on the digital map.

Affected neighbours and co-owners are notified and have 30 days to consent or to object with reasons; if they do not reply, they are deemed to consent. If they have already consented, for example by a notarial declaration, no notification is needed. The decision can be appealed before the Cadastral Judge. At this stage the platform does not cover properties of the Greek State, of general government bodies, or properties registered as of “unknown owner”.

A small difference in area is not always an error

The law states that the area alone does not identify a property. Between the area in the Cadastre and a more accurate survey there is an accepted deviation, set by ministerial decision. So before any application we check whether the difference you see is a real boundary error or simply a measurement difference.

The court route

For inaccurate first registrations concerning the right itself, the lawsuit must be filed within an exclusive deadline, which differs from area to area and has been extended several times. The deadlines set by the law at any given time apply; your lawyer will tell you what applies in your area. Where the lawsuit changes boundaries, a geometric change diagram must be attached. In these cases the survey plan and, where needed, photo-interpretation of historical aerial photographs are usually the main technical evidence in the file.

What the surveying engineer does

We survey the property in the field, tied to GGRS87 (ΕΓΣΑ87), the national coordinate system of Greece, and compare it with the cadastral diagram, the title deeds and any earlier survey plans. If there is an error, we prepare the geometric change diagram and the coordinate table, submit it online to the Cadastre and explain which neighbours the correction affects. The legal side of the case is handled by your lawyer.

What you need / steps

The KAEK (the 12-digit cadastral code) and the extract of the cadastral diagram; you can also see the land parcel on the free Cadastre map
Your title deeds and any earlier survey plan
A survey in the field and a comparison with the documents
Where possible, a talk with the neighbours about consent; it makes the procedure much simpler
Filing the application and the diagram on the platform, and following its progress

Send us your KAEK and title deeds and we will tell you whether the difference can be corrected and through which procedure. See how we help with Cadastre corrections.

Correcting your property data in the Hellenic Cadastre