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Due Diligence Greece Property: The Complete 2026 Checklist

Due diligence Greece property: title search, cadastre, ENFIA arrears, permits, engineer survey, co-ownership, mortgages, Golden Visa tier. Full checklist.

By Greek Invest Editorial · Updated June 17, 2026 · 15 min read

Quick answer: Due diligence on Greek property means verifying six things before you sign: a clean title search (20+ years), full cadastre registration, zero ENFIA arrears, building permit compliance, no mortgages or encumbrances, and, for non-EU buyers, whether a border zone permit is required. A qualified Greek lawyer runs all six; engineer surveys cost €300–800 and are mandatory for Golden Visa applications.

Greece has one of the most distinctive property legal systems in Europe. The national cadastre is still completing its multi-decade registration programme. Inheritance rules create fragmented co-ownership across multiple heirs. Border restrictions apply to non-EU buyers in parts of the country with the most compelling holiday and investment demand. And building permit regularisation schemes, where illegal construction can be legalised on payment of a penalty, are common enough that most lawyers encounter them on a weekly basis.

None of this makes Greek property a poor investment. It makes due diligence non-optional. Buyers who skip it or rush it tend to discover problems after they have paid a deposit or signed a deed. This guide covers every element of a complete due diligence process in the correct order.

For the full purchase sequence, see How to Buy Property in Greece as a Foreigner. For the full fee and tax breakdown, see Cost of Buying Property in Greece.


Why Due Diligence on Greek Property Is Different

Three structural features of the Greek property market make due diligence more important, and more complex, than in most other European countries.

The cadastre programme is not complete. The Hellenic National Cadastre (Ktimatologio) has been digitising and centralising land records since the late 1990s, but full coverage of island communities and rural areas is still in progress. In areas that have not yet transitioned from the older mortgage office (ipothikofilakeio) system, a physical title search covering a minimum of 20 years is required to establish clean ownership. This is not a red flag for a specific property, it is simply the legal context every buyer must navigate.

Greek inheritance law creates co-ownership by default. Under Greek succession rules, property passes to heirs in fractional shares without any requirement for active acceptance or registration. A property that appears to be owned by one person on the surface can have silent co-owners, siblings, children, nephews, who hold a legal share they have never asserted and may not even know about. Your lawyer’s title search surfaces this structure; it does not resolve it automatically.

Building regularisation schemes are pervasive. Greece has passed multiple amnesty laws allowing owners to legalise unauthorised construction on payment of a fine. Many properties on the market have been through at least one such scheme. This does not make them unsellable, but it means the engineering audit of planning compliance is a routine, not exceptional, element of every transaction.

According to RE/MAX Greece 2025 data, 78% of foreign buyers purchase resale property. Resale means older titles, earlier cadastre registration eras, and longer building permit histories, which is exactly where the most interesting due diligence findings surface.


The Six-Track Due Diligence Framework

Complete due diligence on a Greek property runs across six parallel tracks. Your lawyer manages tracks 1 through 5; the engineer handles track 6. For Golden Visa purchasers, an additional seventh track, investment tier verification, is mandatory.

TrackWhat Is CheckedWho Runs ItTypical Timeframe
1. Title SearchOwnership chain, minimum 20 yearsLawyer5–10 working days
2. Cadastre VerificationRegistration status, boundary data, encumbrancesLawyer3–7 working days
3. ENFIA Tax ClearanceUnpaid annual property tax arrearsLawyer1–3 working days
4. Encumbrance CheckMortgages, liens, court attachments, easementsLawyer3–5 working days
5. Border Zone StatusNon-EU buyer restriction checkLawyer1 day (initial check)
6. Engineer SurveyBuilding permit compliance, usable area, Electronic Building IdentityLicensed Engineer3–7 working days
7. Golden Visa TierZone classification, 120m² minimum, single-title ruleLawyer + EngineerConcurrent with above

All six tracks should run concurrently, not sequentially. A competent lawyer managing a Greek property acquisition initiates all checks simultaneously after receiving the property details.


The title search is the foundational element of Greek property due diligence. Its purpose is to establish that the seller holds clear, unencumbered ownership of the property and that the chain of title, the sequence of previous owners, is legally clean back to at least 1945, though 20 years is the standard minimum in practice.

What the Title Search Covers

In areas served by the national cadastre, the title search begins with the cadastre extract (ktimatologio apospasma), which shows the current registered owner, the property’s unique cadastral identifier (KAEK), and any registered encumbrances. Your lawyer verifies this extract against the chain of notarial deeds through which the property has passed.

In areas still under the mortgage office (ipothikofilakeio) system, the process is more manual: your lawyer physically searches the mortgage office index to trace registrations. This takes longer and the output is less standardised, but the legal standard, clean title for at least 20 years, is the same.

What the Title Search Can Find

Issue FoundSeverityTypical Resolution Time
Missing or incomplete heir signature in prior saleHigh1–6 months (depends on heir location)
Unknown co-owners from inheritanceHigh3–12 months (legal process required)
Prior mortgage never formally releasedMedium2–4 weeks (if lender is traceable)
Donation or gift deed with conditions attachedMedium1–3 months
Adverse possession claimsHigh6+ months or cannot be resolved
Incomplete cadastre transfer from prior ownerLow–Medium4–8 weeks

A clean title search result means every transfer in the chain is documented, all co-owners consented to every sale, no registered encumbrances exist, and no legal proceedings are recorded against the property.


Track 2: Cadastre Verification

The Hellenic National Cadastre (Ktimatologio) is Greece’s centralised land registry. Every property in Greece is assigned a KAEK, a unique cadastral code, that links it to its ownership record, boundary data, and any registered encumbrances.

Why Cadastre Status Matters

A property with incomplete or incorrect cadastre registration cannot be sold with a clean title. Buyers who discover a cadastre problem after signing a preliminary agreement and paying a deposit face one of two outcomes: wait for the legal resolution (months or years), or lose the deposit if the seller cannot or will not fix it within the agreed timeframe.

The most common cadastre issues in Greek resale property:

Unknown owner status (anagnostoi). During the initial nationwide registration phase, all property owners were required to submit declarations. Some did not, either because they were abroad, unaware of the requirement, or deceased. Properties where the initial declaration was not filed show as “unknown owner” in the cadastre. The legal process to correct this requires filing a court application for judicial recognition of ownership, which takes 4 to 18 months depending on the court’s caseload.

Boundary discrepancies. The cadastre records use specific coordinate systems that occasionally conflict with older plans attached to notarial deeds. Minor discrepancies (under 2%) are typically correctable administratively; larger ones require a boundary rectification proceeding.

Missing annotations from prior transactions. If an older deed of sale, donation, or inheritance was not formally registered at the cadastre after its notarisation, the cadastre record still shows the prior owner. The current seller’s lawyer must file the missing registrations before a new sale can proceed.

Checking Cadastre Status Before Signing Anything

Your lawyer can check a property’s cadastre status with only the address and KAEK number, no preliminary agreement or deposit is required. This check takes 24 to 72 hours. Any serious Greek property lawyer performs this before advising a client to sign a preliminary agreement. If your lawyer skips this step, get a different lawyer.


Track 3: ENFIA Arrears

ENFIA (Ενιαίος Φόρος Ιδιοκτησίας Ακινήτων) is the annual property ownership tax levied on all Greek real estate. The critical legal feature, which catches many buyers off guard, is that ENFIA arrears attach to the property title, not solely to the taxpayer.

This means if a seller has unpaid ENFIA from prior years, the outstanding amount and penalties follow the property into the buyer’s ownership. The buyer inherits the debt without ever having held the property during the relevant tax years.

How ENFIA Is Calculated

ENFIA is assessed on the objective (officially assessed) value of the property, not the market price. The main component runs from €2 to €16.20 per square metre, varying by location zone, floor level, building age, and street frontage. A 100m² apartment in central Athens with a mid-range objective value typically generates an annual ENFIA bill of €500 to €1,200. Island properties and high-value coastal areas attract higher assessments.

ENFIA bills are issued each August and can be paid in monthly instalments through the AADE online portal.

What Your Lawyer Checks

Your lawyer requests an ENFIA tax clearance certificate (φορολογική ενημερότητα) from AADE confirming that the seller has no outstanding obligations. This must be current, issued within the last 30 days, at the time of the preliminary agreement. A clearance certificate showing zero arrears is a precondition, not a formality.

If the seller has outstanding ENFIA, either the debt must be settled before the preliminary agreement is signed, or the purchase price should be reduced by the outstanding amount and the lawyer should structure the payment to clear the debt directly from the transaction proceeds before release to the seller.


Track 4: Mortgages, Liens, and Other Encumbrances

The encumbrance check confirms that no third party holds a legal claim against the property that would survive the transfer of ownership. Unlike ENFIA arrears, encumbrances are typically registered at either the cadastre or the mortgage office, making them more visible in the title search, but no less dangerous if missed.

Common Encumbrances in Greek Property

TypeDescriptionImpact on Transaction
Mortgage (Ipothiki)Bank or private lender security over the propertyMust be formally released before deed; requires written bank confirmation
Judicial attachment (Kataschesi)Court-ordered freeze on transfer during litigationBlocks sale until court proceeding is resolved
Easement (Douleía)Right of way or access registered in favour of a neighbourDoes not block sale but must be disclosed and accepted
Pre-emption right (Protimisi)Co-owner’s or neighbour’s right to buy before a third partyMust be formally waived before sale can complete
Servitude (Ikodomiki epitagi)Building restriction affecting development rights on the plotDisclosed in title; limits future development plans

A mortgage on a Greek property is not automatically extinguished at sale. The seller’s bank must issue a formal written release (aposivrosi) and the release must be registered at the cadastre or mortgage office before the notary can complete the deed. Your lawyer coordinates this process, typically in parallel with the other due diligence tracks.

If a judicial attachment exists, for example, because the seller is a party to litigation involving a creditor, the property cannot be sold until the legal proceeding is resolved or withdrawn. There is no workaround and no timeline guarantee. This is one of the few due diligence findings that should result in walking away unless the litigation is near resolution with documented evidence.


Track 5: Border Zone Check for Non-EU Buyers

Greece designates certain areas as restricted zones (meθoríes zoní) where non-EU nationals require advance approval from the Greek Ministry of National Defence before completing a property purchase. The legal basis is Law 1892/1990 and subsequent ministerial decrees.

Which Areas Are Restricted

The restricted zone designation covers areas near Greece’s national boundaries. The main categories:

  • Islands close to the Turkish coast, including parts of Lesbos, Chios, Samos, Rhodes, Kos, and smaller Dodecanese and North Aegean islands
  • Mainland regions within a defined distance of land borders with Turkey, North Macedonia, Albania, and Bulgaria
  • Certain strategically sensitive islands regardless of proximity to borders

The exact zoning is not published in a single accessible reference. The classification can vary at the municipal or even community level within a single island, meaning that two properties on the same island may have different zone status. Your lawyer must check each specific property, not the island or region in general.

EU and EEA citizens are fully exempt from border zone restrictions.

The Approval Process

For non-EU buyers whose property falls within a restricted zone, the lawyer submits an application to the regional Military Command, which forwards it to the Ministry of National Defence in Athens. Documents required typically include:

  • Buyer’s passport and national ID
  • Property details and ownership certificate
  • Seller’s consent declaration
  • Declaration that the purchase is for residential or investment purposes

Processing time: 3 to 6 months under normal caseload, occasionally extending to 9 months during high-volume periods.

The key practical implication: border zone approval must be initiated before signing a preliminary agreement. If you sign and pay a deposit before learning that approval is required, you are committed to a timeline you cannot control. Your lawyer checks zone status within 24 hours of receiving a property address, there is no reason to delay this check.


Track 6: Engineer Survey and Building Permit Compliance

The engineer survey is a physical inspection by a licensed Greek civil engineer (Πολιτικός Μηχανικός) or architect, combining three outputs: measurement verification, building permit compliance, and the Electronic Building Identity (Ηλεκτρονική Ταυτότητα Κτιρίου).

What the Engineer Inspects

Building permit verification. The engineer compares the current physical state of the property against the original building permit (oikodomiki átheia) on file with the local planning authority. Common violations include:

  • Balconies or verandas enclosed without permit (extremely common in older Athenian apartment buildings)
  • Additional rooms added to upper floors
  • Basement conversions from storage to habitable use
  • External alterations not reflected in the permit drawings

Measurement verification. The engineer measures the usable floor area and reconciles it against the area stated in the title deed and building permit. Discrepancies of more than 5% require either a corrected permit or a legalisation scheme before the property can be sold without qualification.

Electronic Building Identity. The engineer prepares and digitally submits the Electronic Building Identity, a standardised document introduced by Law 4495/2017 that consolidates the property’s legal status into a single certified record. This document is mandatory for all property sales. For Golden Visa applications, it is also the primary document used to confirm the 120m² minimum usable area requirement under Law 5100/2024.

Engineer Survey Costs

Property TypeTypical Fee
Standard apartment, under 100m²€300–€450
Apartment 100–200m²€400–€600
Villa or house, under 300m²€550–€800
Large property or complex layout€800+

The engineer fee is paid by the buyer and is not included in the lawyer’s fee. Budget €300–€800 for most residential properties. For Golden Visa applications, this is a mandatory line item, not an optional upgrade.


Track 7: Golden Visa Tier Verification (Investment Buyers)

For buyers purchasing specifically to qualify for the Greece Golden Visa residency programme, due diligence includes two additional checks that sit outside the standard legal and engineering process.

Zone Classification

Law 5100/2024 created a two-tier investment threshold based on the property’s administrative location. Getting this wrong is one of the most common, and most expensive, mistakes in the current market.

ZoneThresholdKey Areas
Prime zone (€800,000)Single property, single titleAttica region, Thessaloniki regional unit, Mykonos, Santorini, islands over 3,100 population
Regional zone (€400,000)Single property, single titleAll other locations across Greece

Your lawyer verifies which zone applies to the specific cadastral parcel, not the municipality name, not the island name, but the specific KAEK-referenced cadastral unit. Administrative boundaries are broader than most buyers expect. The entire Attica administrative region, which extends to Marathon, Eleusis, and Lavrio, carries the €800,000 threshold regardless of distance from Athens city centre.

For the full zone breakdown and decision logic, see the Greece Golden Visa property tiers 2026 guide. For a systematic account of how zone misidentification and other structural errors derail applications, see Greece Golden Visa Mistakes to Avoid.

120m² Minimum Usable Area

Law 5100/2024 introduced a 120m² minimum usable area for all residential properties qualifying under the Golden Visa programme. The engineer certificate, specifically the Electronic Building Identity, is the document that proves this.

Key clarification: “usable area” does not include basement storage rooms, covered parking, uncovered terraces, or balconies. It means the main habitable floor area within the external walls. Properties marketed as 130m² often include these excluded elements. Your engineer’s certificate is the definitive measurement. See Greece Golden Visa 120 Square Metre Rule for the full calculation methodology.

The single-title rule. The entire qualifying investment must be in one property on one title deed. Two units totalling the required threshold, even purchased simultaneously from the same developer, do not qualify.


Co-Ownership: The Hidden Risk in Greek Resale Property

Co-ownership deserves specific attention because it is both extremely common in Greek resale property and structurally harder to resolve than most other due diligence findings.

Under Greek inheritance law, when a property owner dies without a will (or even with one), the property passes to heirs in fractional shares automatically. These shares vest without any requirement for the heir to actively accept, register the inheritance, or even be aware of it. Over two or three generations, a single property that was owned outright in the 1960s can have a dozen or more co-owners, some resident in Greece, some abroad, some deceased with their own unresolved estates.

A valid property sale requires the written consent and notarial signatures of every registered co-owner. If one co-owner is absent, unreachable, or deceased without a resolved estate, the sale cannot proceed until that gap in the ownership chain is legally resolved.

What your lawyer looks for in the title search:

  • Inheritance declarations (Αποδοχή Κληρονομιάς) filed for every deceased prior owner
  • Signatures of all heirs at every transfer point in the title chain
  • Current cadastre extract confirming no additional co-owners not reflected in recent deeds
  • Power of attorney records confirming any co-owner who acted through a representative was genuinely authorised

Properties with partially unresolved co-ownership are not necessarily fatal, they may be resolvable within a manageable timeframe if the missing heir can be contacted. But they are a significant risk if you are operating under a Golden Visa application deadline or need to complete within a defined window.


The Due Diligence Checklist

Use this checklist to confirm all tracks have been completed before signing a final purchase deed.

ItemStatusNotes
Lawyer appointed and conflict-freeMust be independent of seller and agent
Title search completed (20+ years)Report from lawyer confirming clean chain
Cadastre extract obtained and verifiedKAEK confirmed, no unknown owner status
All co-owners identified and contactableIncluding inheritance chain fully documented
ENFIA tax clearance certificate issuedMust be current (within 30 days)
ENFIA arrears confirmed at zeroOr deducted from purchase price
Encumbrance search completedMortgage, liens, attachments confirmed clear
Any existing mortgage, bank release obtainedWritten bank confirmation of release
Border zone status confirmed (non-EU buyers)Written confirmation from lawyer
Border zone approval obtained if requiredMinistry of Defence letter
Engineer survey commissionedLicensed Greek civil engineer or architect
Building permit confirmed compliantNo unauthorised construction, or fully legalised
Electronic Building Identity issuedEngineer’s digital submission confirmed
Usable area confirmed (Golden Visa: 120m+ min)From engineer certificate, not marketing materials
Golden Visa zone confirmed (€400K or €800K)Based on cadastral parcel, not address
Single-title rule confirmedOne property, one deed
AFM obtainedRequired before any payment
Greek bank account openedRequired for purchase fund transfer
Preliminary agreement reviewed by lawyerBefore signing or paying deposit

How Long Does Due Diligence Take?

A well-organised Greek property lawyer running all six tracks in parallel completes standard due diligence in 10 to 20 working days for a straightforward resale in a cadastred urban area. The timeline extends when complications are found.

ScenarioTypical Timeframe
Clean resale in Athens, fully cadastred10–15 working days
Resale on island, partially cadastred15–25 working days
Co-ownership issue requiring resolutionAdd 1–4 months
Border zone approval (non-EU buyer)Add 3–6 months
Cadastre unknown owner statusAdd 4–18 months
Unresolved building permit violationAdd 2–8 months (regularisation scheme)
Judicial attachment (court proceeding)Indeterminate, consider walking away

The practical implication: do not sign a preliminary agreement with a 60-day deadline to the final deed unless your lawyer has already confirmed all six tracks are clear. A preliminary agreement with an unrealistic completion timeline, particularly where due diligence is still running, is one of the primary sources of lost deposits in Greek property transactions.


Professional Fees for Due Diligence

Due diligence is not a free service bundled into the notary’s fee. It is a professional service provided by your lawyer, with the engineer survey charged separately.

ServiceTypical FeeNotes
Lawyer, full due diligence + transaction1%–2% of purchase priceIncludes title search, cadastre, encumbrances, preliminary agreement review, and representation at notary
Lawyer, due diligence only (no transaction)€1,500–€3,500 flatIf transaction does not proceed
Engineer survey, standard apartment€300–€500Measurement, permit check, EBI
Engineer survey, villa / complex property€500–€800Additional time for complex permit history
Cadastre search (standalone)€50–€150Lawyer fee for extract; paid to cadastre
Translation and apostille (non-EU buyers)€200–€500For documents issued outside Greece

For a complete breakdown of all purchase costs including transfer tax, notary fees, and registration charges, see Cost of Buying Property in Greece.


Common Due Diligence Findings: and What to Do

FindingRecommended Response
Minor ENFIA arrears (under €500)Deduct from purchase price; lawyer clears before deed
Large ENFIA arrearsRenegotiate price; do not complete until cleared
Existing mortgage, bank cooperativeWait for bank’s formal release letter before signing
Existing mortgage, bank unresponsiveConsider walking away or obtain legal indemnity
Undisclosed co-owner contactableAllow 4–8 weeks for resolution; sign preliminary with condition precedent
Undisclosed co-owner deceased/unreachableDelay or decline; do not sign unconditional preliminary
Building permit violation, regularisableObtain engineer cost estimate; deduct from price
Building permit violation, demolition orderDecline unless buyer is willing to execute demolition
Cadastre boundary discrepancy under 2%Administrative correction; add to preliminary conditions
Border zone, approval requiredAdd approval as condition precedent to preliminary; wait for letter
Golden Visa, wrong zoneDecline or renegotiate to meet actual threshold
Golden Visa, area under 120m²Decline; no workaround under Law 5100/2024

Frequently Asked Questions

Due diligence on Greek property covers six core tracks: title search (minimum 20 years of ownership chain), cadastre verification confirming correct registration with the Hellenic National Cadastre, ENFIA tax clearance confirming no unpaid annual property tax arrears, encumbrance check for mortgages and court attachments, border zone status for non-EU buyers, and an engineer survey covering building permit compliance and the Electronic Building Identity. For Golden Visa purchasers, a seventh track, zone classification and 120m² minimum area verification, is mandatory.

An independent engineer survey in Greece, covering measurement, building permit compliance, and the Electronic Building Identity certificate, typically costs €300 to €800 depending on property size and complexity. Standard apartments under 100m² run €300 to €450. Villas and properties over 200m² run €550 to €800. For Golden Visa applications the engineer certificate is mandatory, not optional, as it documents the usable area that must meet the 120m² minimum under Law 5100/2024.

The Hellenic National Cadastre (Ktimatologio) is the centralised land registry recording ownership, boundaries, and encumbrances for all Greek real estate. The nationwide registration programme started in the late 1990s and remains incomplete in some rural and island areas. The most common problems are: properties showing 'unknown owner' status because the original registration declaration was never filed, boundary discrepancies between the cadastre coordinate system and older deed plans, and missing annotations from prior transactions that were never registered at the cadastre. None prevent research, but all require legal resolution before a clean sale can complete.

ENFIA is Greece's annual property ownership tax. Its critical legal feature is that unpaid arrears attach to the property title, not solely to the taxpayer, a buyer who completes without a tax clearance check can inherit the seller's outstanding ENFIA debt. Your lawyer obtains a clearance certificate from AADE confirming zero outstanding obligations before you sign any preliminary agreement. If arrears exist, they must either be settled before signing or deducted from the purchase price with the lawyer structuring direct payment from transaction proceeds.

Yes, potentially. Certain islands and mainland regions close to Greece's national borders are designated restricted zones where non-EU nationals require approval from the Ministry of National Defence before completing a purchase. This applies regardless of whether the purchase is for residency, investment, or Golden Visa purposes. The approval process takes 3 to 6 months. Your lawyer confirms zone status within 24 hours of receiving a property address, this check should precede any preliminary agreement or deposit.

Greek inheritance law automatically passes property in fractional shares to heirs without requiring active acceptance or registration. Over generations, a single property can acquire a dozen or more co-owners, some abroad, some deceased with unresolved estates. A valid sale requires written consent and notarial signatures from every registered co-owner. Missing co-owners, unreachable heirs, or deceased co-owners without resolved estates block the transaction until the ownership chain is legally clarified, which can take months.

A lawyer is not legally mandatory in every Greek transaction, but no foreign buyer should proceed without one. The notary authenticates the deed but represents neither party, they are a public official ensuring document validity, not a buyer's advocate. Your lawyer runs all six due diligence tracks, reviews the preliminary agreement before you sign or pay a deposit, confirms border zone status, and verifies Golden Visa tier compliance if applicable. Legal fees run 1% to 2% of the purchase price and are among the most valuable costs in any Greek property transaction.

The most common permit violations in Greek resale property are: balconies or verandas enclosed to create additional habitable space without a permit (extremely common in older Athens buildings), rooms added to upper floors, basement conversions from storage to habitable use, and roof-level alterations. Unauthorised construction does not automatically block a sale, most can be regularised through penalty payment schemes, but it must be identified, costed, and either resolved before the deed or priced into the purchase terms. Unresolved or non-regularisable violations expose the buyer to fines and demolition orders.


Data sources: RE/MAX Greece Residential Market Report 2025; Hellenic National Cadastre Programme (Ktimatologio) public status reports 2025; Greek Tax Authority (AADE) ENFIA guidance 2025–2026; Law 5100/2024 (Greece Golden Visa reform); Law 4495/2017 (Electronic Building Identity); Circular 1/2026 (Ministry of Migration, 22 April 2026); Greek Ministry of National Defence border zone published guidance. This guide is for informational purposes only and does not constitute legal or tax advice. Consult a qualified Greek lawyer and licensed engineer before proceeding with any property transaction.

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