The Cadastre and the KAEK: what 'in operation' means for a house in Crete in 2026
Crete is in the last stretch of the national Cadastre, and most of the island spent 2026 at the posting stage rather than in operation. What the twelve-digit KAEK is, why the seller's declaration matters more than the deed right now, what the certificates and registration cost, and the eight-year window that decides whether a wrong entry can still be fixed.
Most people buying in Crete in 2026 are buying in the middle of a changeover. For a century Greek property was recorded in local mortgage registries by the names of the people who signed deeds; the Hellenic Cadastre replaces that with a map of parcels, each with a number and a registered owner. Crete is among the last parts of the country to switch over, and through 2026 most of the island was at the posting stage — draft data published for owners to check — rather than fully in operation. That is not a reason to avoid buying. It is a reason to check two things the old system never asked about: whether the seller declared the property, and whether the draft record matches the deed. Everything below is as it stood in September 2026, checked against the Hellenic Cadastre’s own announcements and fee tables and the text of law 2664/1998.
I am not a lawyer or a surveyor and this is not legal advice. Which registry system applies to a given plot on a given day is a question for the notary who will sign the deed.
The Cadastre in one minute. Every parcel gets a KAEK, a twelve-digit code that stays the same when the owner changes. In Crete, Rethymno posted its draft data from 30 April 2026 (corrections due 30 June); Heraklion, Malevizi, Hersonissos and all of Chania posted from 25 May 2026 (deadline extended to 3 August 2026). I could not confirm which Cretan areas are fully in operation. Certificates cost €9.50–€33. Registering a sale costs 5‰ of the value plus €3 and €20, with a disputed extra 1‰. Once an area is operating, wrong first entries can be challenged until 31 December of the eighth year; after that, the window closes.
What the KAEK is
The KAEK — Κωδικός Αριθμός Εθνικού Κτηματολογίου — is the parcel’s identity number. Its twelve digits encode the regional unit, the municipality, the sector, the unit and the parcel itself, and apartments or other horizontal properties get further suffixes. The number belongs to the land, not the person: a sale changes the owner recorded against it, while splitting or merging parcels creates new numbers.
For a buyer this matters in a practical way. Once an area is in the Cadastre, the question “is this the plot in the deed?” becomes “is this the KAEK, and does the cadastral diagram show the boundaries the seller walked you round?” A mismatch between the topographic survey, the deed and the cadastral diagram is the thing to find before the deposit, not after.
Where Crete stands
Rethymno regional unit — Rethymno, Agios Vasileios, Amari, Anogeia and Mylopotamos — posted its draft data from 30 April 2026. The deadline for correction requests was 30 June, and requests saved in time could be finalised until 21 July. The northern Heraklion municipalities of Heraklion, Malevizi and Hersonissos and the whole of Chania regional unit posted from 25 May 2026, and their deadline was extended to 3 August 2026. A 2025 news report said southern Heraklion and Lasithi were being brought into the programme; I could not verify their current stage from an official source.
So in September 2026 a large part of Crete had finished posting but had no confirmed start date for operation. In practice that means two records exist side by side: the old registry, where the seller’s title is transcribed, and the Cadastre’s draft, built from owners’ declarations. They should agree. When they do not — a plot recorded under a cousin’s name, a boundary drawn through the neighbour’s olive trees, an entry marked “unknown owner” — the fix is the seller’s job, and it is far easier during posting than later.
What to check, and ask for
Ask the seller for the KAEK, if one has been assigned, and for proof that they declared the property to the Cadastre. Ask your lawyer to compare the posted data with the title deeds and the engineer’s topographic survey. The Cadastre’s online final-data service shows the KAEK and extracts of the sheet and diagram, but only to the person who made the declaration, and its printouts cannot be used in a transaction — so this is something the seller shows you, not something you look up.
Official certificates are a different matter. They can be requested online through Taxisnet: a fee notice arrives within ten working days, must be paid within seven, and the certificate comes as a PDF. The Cadastre’s fee table lists €9.50 for a copy of the cadastral sheet (plus €4.50 per extra sheet), €9.50 for a certificate of entries, €15 for an extract of the cadastral diagram and €33 for the full diagram.
Two old habits need unlearning. A preliminary contract is not among the acts article 12 of law 2664/1998 lists as registrable, so it gives you no cadastral entry of its own. And if the plot sits under or beside a forest or archaeological overlay, the Cadastre is where those claims show up as competing rights.
What registration costs
Cadastre decision 2/12-01-2026, published in the Government Gazette on 13 January 2026, sets the fees. A sale pays a proportional fee of 5‰ of the value plus fixed fees of €3 and €20. The same decision adds 1‰ for acts entered in the cadastral book of article 10 of law 2664/1998, and one news report reads the total as 6‰ — €623 on a €100,000 purchase. Treat 5–6‰ as the range and let the notary give you the number. The notary files the registration electronically, and the fee must be paid within three working days of the fee notice or the application is rejected automatically. One widely repeated error is worth knowing: the 8‰ category in the decision is for a marriage settlement (προικοσύμφωνο), not a preliminary contract (προσύμφωνο).
These sit alongside the transfer tax, notary and lawyer in the overall bill, and the process fits into the wider buying sequence.
The eight-year window
Once an area starts operating, the entries carried over from the final cadastral tables are the first registrations. Under article 6 of law 2664/1998, anyone who claims they are wrong must sue before the Court of First Instance within a deadline that ends on 31 December of the year in which eight years are completed from the publication of the operation-start decision. Where the entry reads “unknown owner”, the claimant files an application — not a lawsuit — to the cadastral judge, and must serve it on the Greek State within 20 days. For a buyer, the lesson is simple: a property whose first registration is wrong is a property with a lawsuit attached, and the seller should resolve it before you sign.
The honest downside
The changeover is slow, and the dates move: Chania’s deadline was extended, southern Heraklion and Lasithi have no confirmed timetable, and the official site does not tell you in one place which areas are operating. The fee decision has been misreported, and the extra 1‰ is genuinely unclear. And the Cadastre does not cure the underlying problem of Cretan property — undivided family ownership, unrecorded boundaries, declarations never made. It simply makes those problems visible, which is uncomfortable but, for a buyer, entirely good news.
Disclosure: Honest Crete does not sell or list property. Enquiries sent from this section go to a licensed estate agent, not to us; the full statement is below. Nothing in this article names a developer, a property, a notary, a lawyer, a surveyor or any other professional, and it never will.
Worth it if the seller has declared the property, the posted cadastral data match the deeds and the topographic survey, and the notary confirms which registry the deed will go to. Skip it if the record shows another owner, “unknown owner” or a boundary that does not match, and the seller will not correct it before the deposit.
What is a KAEK in Greece?
The KAEK (Κωδικός Αριθμός Εθνικού Κτηματολογίου) is a twelve-digit number that uniquely identifies a land parcel in the Hellenic Cadastre — in effect the property's identity number. It encodes the regional unit, municipality, sector, unit and parcel, with extra suffixes for apartments and other horizontal properties. It does not change when the owner changes, only when the parcel is split or merged.
Is the Cadastre in operation in Crete?
Not everywhere, as of September 2026. Rethymno regional unit finished its posting stage in summer 2026, and the Heraklion, Malevizi and Hersonissos municipalities and the whole of Chania had a correction deadline of 3 August 2026. I could not confirm from an official page which Cretan areas are fully in operation, so ask the notary which system applies to the specific plot.
What is the posting stage of the Cadastre?
The posting (ανάρτηση) is when the Cadastre publishes the draft data it has compiled from owners' declarations, so that owners can check them and ask for corrections before the cadastre starts operating. In Rethymno, for example, posting ran from 30 April 2026 with a correction deadline of 30 June 2026.
How much does it cost to register a purchase in the Greek Cadastre?
Under Cadastre decision 2/12-01-2026, a sale pays a proportional fee of 5‰ of the value plus fixed fees of €3 and €20. The same decision adds 1‰ for acts entered in the cadastral book of article 10 of law 2664/1998; one news report reads that as 6‰ in total. Ask the notary for the exact figure on your deed.
What happens if the Cadastre records my property under the wrong owner?
The first registrations can be challenged by a lawsuit within a deadline that ends on 31 December of the year in which eight years are completed from the start of operation, under article 6 of law 2664/1998. Where the entry says 'unknown owner', the claimant files an application to the cadastral judge instead, served on the Greek State within 20 days.
Can I look up a property in the Cadastre online?
Partly. The Cadastre's final-data service shows the KAEK and extracts of the sheet and diagram through a Taxisnet login, but only to someone who declared the property, and its printouts cannot be used in a transaction. Official certificates can be requested online: a fee notice arrives within ten working days, must be paid within seven, and the certificate is issued as a PDF.
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