When a property sale in Greece stalls, the problem is rarely the price—it’s the paperwork. Small inconsistencies in square meters, gaps in the Electronic Building Identity file, an expired Energy Performance Certificate, or an outdated topographic plan can easily push the deed back by weeks. In this guide, we explain the common mistakes that delay a property transfer and how to prevent them with simple, practical steps. Our goal is to help you sign on the first appointment, without last-minute surprises or extra lawyer/notary visits. Read on for the most frequent pitfalls and the fixes that actually work.
1) Incomplete or incorrect Electronic Building Identity
The Electronic Building Identity for conveyancing is the core of the technical file. If required drawings, declarations, or certificates are missing—or if the actual condition of the property doesn’t match the plans—the notary cannot proceed. Common gaps include missing permit revisions, outdated drawings, or legalization documents that were never uploaded. Even minor discrepancies (a moved interior door, a storage room being used as living space) create doubts and trigger a restart of checks. The solution is a full pre-audit of the HTK by a qualified engineer, with a written list of missing items and corrections before you book the notary.
2) Square-meter mismatches across E9, Municipality/DEDDIE, Cadastre, and HTK
If the reported area differs between your E9 tax form, the Municipality/HEDNO (DEDDIE power utility records), the Hellenic Cadastre (Ktimatologio), and the HTK, the TAP municipal tax clearance will be delayed and the transfer will freeze. This is especially common in older apartments with lofts, enclosed balconies, or confusion between net and gross area. Each agency will ask for corrections in sequence, so doing them out of order wastes time. The right order is: on-site measurement and plan update → harmonize square meters → update E9 and Municipality/HEDNO → reflect the final numbers in the HTK. When every registry shows the same figure, the file moves smoothly.
3) Unlegalized alterations
Seemingly small alterations—enclosing a semi-open balcony, changing internal partitions, adding a lightweight storage—are a red flag for conveyancing if they were never legalized. Without a proper unauthorized construction regularization and the engineer’s declaration, the notary will halt the process. Legalization usually involves an inspection, measured drawings, category assessment, and fee calculations. The earlier you start, the faster it finishes; leaving it to the end almost guarantees a postponement. Ask for a technical inspection first, so you’ll know if simple legalization is enough or if a structural adequacy study is needed because the load-bearing structure was affected.
4) Engineer’s Declaration and affidavits with typos or wrong IDs
The Engineer’s Declaration for the deed must align perfectly with the title deeds, the KAEK (Cadastre property ID), owner details, and the exact description of the unit. Typos in names, VAT numbers (AFM), dates, or floor/unit identifiers lead to rejection. If floor numbers or unit labels on the drawings differ from the deed, the notary will request clarifications or corrections. Before issuing the declaration, the engineer should cross-check: title deed & registration, cadastre sheet, HTK contents, and—where applicable—the topographic plan. Meticulous data consistency here typically saves at least a week.
5) Outdated or incorrect topographic plan (critical for plots and land)
For land (plots/agricultural parcels), you need a georeferenced topographic plan in EGSA ’87. Old drawings without coordinates, blurry boundaries, or plans that don’t match the cadastre cause dead ends. If neighbors dispute boundaries or there are overlaps, you’ll need an updated topographic and a short technical report before you set a deed date. In cases of new or amended horizontal/vertical ownership, an accurate, current plan speeds up approvals. Early assignment to a surveyor prevents queues at public services and repeated corrections.
6) Cadastre (Ktimatologio) issues: wrong KAEK, encumbrances, missing registrations
Your Cadastre data must reflect the real, current situation. If the KAEK is wrong, if an old pre-notation of mortgage still shows, or if a deed was never properly registered, the notary will not move forward. Run a pre-check of the cadastre sheet and obtain encumbrance certificates early, so you can start any required releases or corrections at once. Even small clerical errors (old spelling of a surname) can take time to amend. A tidy cadastre file gives the notary confidence and avoids adjournments.
7) Problems in the horizontal/vertical ownership deed: shares, auxiliary spaces, parking spots
A frequent blocker is a mismatch between the ownership deed and reality: a storage room used as living space, a basement merged with the apartment, or a parking spot that doesn’t match the plan. These surface during a proper site survey and raise legal concerns. The remedy is a deed amendment (where applicable) before the notary receives the file. With modern methods like 3D laser scanning, documentation is accurate and expedites approvals. Addressing this early turns a potential legal knot into a routine correction.
8) Energy Performance Certificate expired or with wrong data
The Energy Performance Certificate for sale must be valid and reflect the correct area, usage, and the actual number/state of HVAC systems. Many EPCs were issued years ago with rough measurements or have since expired. If the notary spots discrepancies, re-issuance will be required, delaying the deed. A quick on-site check updates the figures, and you’ll often receive energy-upgrade tips that add appeal to the property. Getting the EPC right removes a common last-minute obstacle.
9) TAP and municipal fees: delays caused by area inconsistencies
The TAP certificate (municipal real-estate levy clearance) requires your square meters to match across the Municipality and HEDNO records. If the power utility shows different square meters than your E9 or municipal registry, the Municipality will ask for corrections and re-calculation of fees. This can take several days, especially in busy periods. Prepare in order: measure, update square meters with the Municipality, then apply for TAP with a complete pack of documents. The cleaner the file, the faster the certificate.
10) Building rules & shared-costs (condominium) issues that surface late
A no-arrears statement for shared costs isn’t always mandatory, but buyers and notaries often ask for it. Unsettled dues or disputes with the building’s Regulations create friction and delay. Ask the manager for a recent no-debt confirmation and keep a copy of the Regulations handy. In multi-owner buildings, transparency about common expenses builds trust and keeps the deal on track. It’s a small paper that prevents big headaches.
11) Out-of-plan properties: buildability, restrictions, and special zones
For out-of-city-plan properties, you need clear documentation of buildability and checks for forest, archaeology, or coastline restrictions. Delays here come from missing certificates or an insufficient topographic plan. The correct sequence is obtain the necessary public-authority confirmations first, then book the deed. If there are grey areas, request a technical opinion so both parties understand the true development potential. Upfront clarity prevents last-minute re-negotiations.
12) Missing building-permit files and revisions
Many older properties lack plan copies, revisions, or stamped drawings. Without them, the HTK cannot be completed and the engineer’s declaration is risky. There are still options: reconstruct the permit file from the authority, where possible, or proceed with a new measured survey supported by a clear technical report. Start this search early; archives and appointments take time. Good organization from day one eliminates the “we’re missing a drawing” surprise two days before signing.
10-day preparation checklist for a “clean” deed
Begin with a technical site inspection and photos to identify any unlegalized changes or inconsistencies. Commission a measured survey (use 3D laser scanning where appropriate) so all plans, the E9, the Municipality/HEDNO records, and the Cadastre can be harmonized. For land, order a timely EGSA ’87 topographic plan and collect any forest/archaeology/coastline confirmations needed. Complete legalizations and issue a valid EPC with updated data. Finally, complete the HTK package and deliver a full, unified file to the notary 3–5 days before the appointment so minor edits don’t force a postponement.
FAQ – Plain answers for a smooth property transfer in Greece
What exactly goes into the Electronic Building Identity (HTK) for a deed?
Think of the HTK as the property’s digital life file. It includes the building permit and revisions, architectural plans/sections, any legalization documents, Cadastre details (KAEK), and the Engineer’s Declaration. To compile it correctly, the engineer must visit the site, measure what actually exists, and cross-check with the titles. If a document is missing, they either reconstruct it from the authority or justify it with a technical report. A complete HTK allows the notary to proceed confidently, which is why a pre-audit is essential.
Do I need a structural study (static adequacy) to sell?
For straightforward cases, no—an accurate inspection and a proper engineer’s declaration are enough. But if there was an alteration affecting the load-bearing structure (openings, removals, or strengthening works), you may need a structural adequacy study to support legalization or compliance. This proves safety and prevents the notary from freezing the file. In older or earthquake-affected buildings, structural documentation can also reassure buyers and speed up decisions.
When is a topographic plan required and why does everyone insist on EGSA ’87?
A topographic plan for conveyancing is mandatory for plots, agricultural land, and in new/amended ownership deeds (σύσταση/τροποποίηση). Apartments usually don’t need it. EGSA ’87 ensures your boundaries are mapped in the national coordinate system and align with the Cadastre. Old, non-georeferenced plans raise doubts about location and area. Updating the plan resolves boundary disputes, double registrations, and overlaps—saving time at the notary.
What is the TAP certificate and why does it often take time?
The TAP certificate confirms municipal real-estate levies are settled and is a prerequisite for the deed. Delays happen when square meters don’t match across Municipality, HEDNO, and E9. Corrections must be registered before fees are recalculated, which adds days. Check your figures early and apply with a complete dossier; done right, TAP is issued without a second visit.
Who coordinates all these documents? Can one team handle everything?
Typically, the seller appoints an engineer for the technical side (inspection, survey, legalizations, EPC, HTK) and the notary handles titles, registrations, and encumbrances. In practice, everything moves faster when a single engineering team coordinates surveys, structural/architectural tasks, topographic plans, and the digital submissions. This closes gaps between agencies and delivers a single, consistent file to the notary—fewer appointments, fewer surprises.
Why appoint Katsouris Engineering for your property transfer
We provide end-to-end file management: measured surveys with 3D Laser Scanning, square-meter harmonization, legalizations, EPC issuance, HTK compilation, and EGSA ’87 topographic plans. We pre-check the Cadastre for KAEK errors or encumbrances to avoid last-minute roadblocks. For complex cases, we prepare structural adequacy/strengthening studies and technical opinions for out-of-plan plots. Our deliverable to your notary is a complete, tidy, and consistent file, which shortens decision time. Ask us for a pre-transfer file audit and a clear, dated action plan.
