Can I legalize an unauthorized structure?
Conditional: most pre-28.7.2011 structures can be regularized; in protected zones they can't. Under Law 4495/2017 (5 categories, 1–4 regularizable), regularization is a 30-year suspension of demolition, not full legalization, via a fee + the single special fine. The Electronic Building Identity won't issue unless all arbitrariness is regularized first. Note the transfer prohibition (Art. 83): no sale/parental grant/deed without an owner's declaration + an engineer's certificate that there's no arbitrary construction. The window is open (until 31.3.2028). In short: yes for the regularizable ones, with a fine and an engineer's certificate.
📋 The rules
- Law 4495/2017: categories 1–4 regularizable
- Regularization = 30-year demolition stay, not legalization
- Building Identity: only after the arbitrariness is regularized
- Transfer: engineer's certificate (Art. 83)
- Regularization window open until 31.3.2028
🔓 Exceptions
- Forest/reforestable land, seashore, streams, archaeological sites: no
- Structures built after 28.7.2011: not regularizable
- Latecomers: fine +40%
⚠️ Penalties & fines
Regularization is done via the single special fine per structure (surface × zone value × coefficients), with a +40% surcharge for latecomers and up to 100 instalments (minimum €50). Those that can't be regularized (forest, seashore, streams, archaeological sites, structures after 28.7.2011) face demolition. A false or missing engineer's certificate (Art. 83) is punished with imprisonment ≥6 months and a €30,000–€100,000 fine. Beware myths: "deadline 31.3.2026, last chance" — outdated (extended to 31.3.2028); "regularization = full legalization" — a myth (it's a 30-year demolition stay). To stay compliant: regularize with an engineer before transferring, and don't buy a property without an engineer's certificate.
📎 Official sources
- Law 4495/2017 — arbitrary structures/building identity →
- Law 4495/2017 (Art. 83) — engineer's certificate →
- Technical Chamber of Greece (TEE) →
❓ Frequently asked
Can I legalize an unauthorized structure?
It depends. Most structures built before 28.7.2011, and minor deviations, can be regularized under Law 4495/2017. By contrast, structures in forests, on the seashore, in streams or archaeological sites, and those built after 28.7.2011, can't be regularized.
Does regularization mean the structure is legalized?
Not fully. Regularization suspends demolition for 30 years; it isn't a definitive legalization. It's done by paying a fee and the single special fine. It's a myth that regularization automatically turns an arbitrary structure into a fully legal building.
Can I sell a property with an arbitrary structure?
Not without declaring it. Under Art. 83, no sale, parental grant or notarial deed can be done without the owner's declaration and an engineer's certificate that there's no arbitrary construction, or that it's been regularized. The certificate is valid for two months.
Until when can I regularize?
The regularization window is open and has been extended to 31 March 2028. The claim that the deadline was 31 March 2026 is outdated. Latecomers, however, pay the single special fine increased by 40%.
What's the risk with a false engineer's certificate?
A false or missing engineer's certificate, under Art. 83, is punished with imprisonment of at least 6 months and a fine of €30,000 to €100,000. So the certificate must truly reflect the property's condition, to protect both buyer and seller.
🔎 Common searches
What people search to land here:
- “legalize arbitrary structure 2026”
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