Greece's property market offers some of the most compelling renovation opportunities in Southern Europe. A significant proportion of the island and coastal stock was built during the 1970s–1990s and has dated substantially — presenting buyers willing to modernise with the opportunity to create highly differentiated rental products in a market where premium presentation commands strong premiums. In the Cyclades, Ionian Islands, Crete, Halkidiki, and Athens, a well-executed renovation can reposition a property into the upper tier of the short-let and medium-term rental markets.
This guide covers the planning system, costs, contractor selection, and the practical challenges of renovation in Greece for overseas investors.
The Greek Planning System
Greece's planning framework is administered at national level by the Ministry of Environment and Energy, with implementation through regional and municipal authorities. The permit system distinguishes between works that require formal approval and those that do not.
Exempted works (no permit required): minor maintenance and cosmetic works including repainting, flooring, kitchen and bathroom fixture replacement, minor plumbing and electrical repairs. Additionally, since the 2011 and subsequent planning law reforms, many renovation works up to defined thresholds have been simplified or exempted.
Building permit (oikodomiki adia / adeia domisis): required for structural alterations, extensions, change of use, and significant modifications to the building fabric. The permit application requires: architectural drawings by a licensed Greek architect (mēchanikos), a structural engineer's certificate for relevant works, and submission to the local Urban Planning Authority (Πολεοδομία — Poleodomia).
Pre-approval (Προέγκριση): for larger or more complex projects, a pre-approval stage verifies the project's compliance with planning regulations before the full application is submitted.
Processing times vary considerably by region: in Athens and larger cities, permits can move relatively quickly; in many island municipalities, the planning authority is understaffed and processing can take 6–12 months or more.
Arbitrary construction (αυθαίρετα): a significant proportion of Greek property — particularly older island and coastal houses — contains unauthorised building work, known as authaireta. Greece has periodically legislated amnesty programmes allowing regularisation of unauthorised works against payment of a fine. If purchasing an older property with renovation intent, due diligence on planning compliance status is essential — your lawyer should commission an urban planning check (topographic survey and planning confirmation) before exchange.
Heritage and Architectural Restrictions
Greece has extensive heritage protection across its islands and historic towns:
- Listed buildings and areas: properties within declared traditional settlements (parádosi oikismói) are subject to strict architectural controls — external works must maintain the traditional character. This affects much of the Cyclades (Santorini, Mykonos, Paros, Naxos), the Ionian Islands, and historic areas throughout mainland Greece.
- Archaeological zones: Greece's archaeological heritage is extensive. Building within or near an archaeological zone can trigger archaeological survey requirements, and finds during construction may cause significant delays.
- Coastal zone (aigialós): property within the coastal zone (typically 50m from the shoreline, but varying) is subject to special restrictions.
Always instruct a Greek architect familiar with the specific local restrictions before purchasing any property with renovation intent. An architect's initial consultation fee is a worthwhile pre-purchase investment.
Typical Renovation Costs (2026)
Construction costs in Greece vary by island and region. The Cyclades (Santorini, Mykonos) command the highest prices due to logistics costs and labour scarcity. Mainland Greece, Crete, and the Ionian Islands are somewhat more affordable.
| Work Type | Approximate Cost (EUR) |
|---|---|
| Full repaint (apartment) | €3,000–€8,000 |
| Kitchen refurbishment | €8,000–€30,000 |
| Bathroom renovation | €5,000–€15,000 |
| Flooring replacement (per m²) | €40–€120 |
| Electrical rewire (apartment) | €4,000–€10,000 |
| Roof waterproofing/repair | €5,000–€20,000 |
| Full cosmetic renovation (2-bed) | €20,000–€50,000 |
| Structural renovation (per m²) | €600–€1,500+ |
| Architect + permit fees | 8–15% of construction budget |
| Island logistics premium | 15–40% above mainland |
Note: the island logistics premium is real and significant — materials transported by ferry to Santorini, Mykonos, or the smaller Cycladic islands can cost meaningfully more than mainland prices, and scheduling skilled tradesmen for island work adds further cost.
Finding Contractors in Greece
Use a licensed Greek architect for all but minor works. Greek law requires licensed architects (μηχανικοί — mechanikoi, meaning licensed engineers/architects) for permit applications, and it is advisable to have them supervise works even where not legally required. The Hellenic architects' professional body (TEE) maintains a register; verify membership before engaging.
Structural engineers: required for any works involving structural elements. Again, verify TEE registration.
Builder selection: the Greek construction market includes reputable established firms alongside informal and unlicensed operators. In island markets, where quality contractors are scarce, advance booking months ahead is sometimes necessary — particularly for peak summer season works (which should generally be avoided in tourist locations due to noise and access restrictions).
Island-specific considerations:
- Book contractors well in advance — in Santorini and Mykonos, quality contractors can be fully booked 6–12 months out
- Works during the tourist season (roughly April–October) are socially and practically problematic in tourist-dependent islands — plan major works for November–March
- Material deliveries must align with ferry schedules; build this into your programme
Renovation for the Short-Let Market
Greece's short-let market has grown substantially, driven by platforms including Airbnb, Vrbo, and specialist villa rental agencies. Premium properties in Santorini, Mykonos, Crete, and Corfu command nightly rates that make renovation economics compelling.
Key priorities for short-let renovation:
- Outdoor space: terraces, infinity pools, outdoor dining and lounge areas are the primary booking drivers in the Greek island market
- Pool: a private pool or plunge pool can double nightly rates in many island markets
- Whitewashed/local character: in Cycladic markets, authentic local architectural character (white render, domed ceilings, stone accents) is a market asset — preserve and enhance it rather than imposing generic modern finishes
- Cooling: fans and, increasingly, A/C are expected for summer rentals in Greece
- Photography-ready presentation: professional photography after renovation is essential for online platform performance
Energy Efficiency
Greece's Mediterranean climate allows significant passive cooling through design (orientation, shading, thermal mass) in addition to active systems. Solar water heating is near-universal and low-cost. The Greek government offers periodic renovation grant programmes for energy efficiency improvements — check current availability with your architect.
Compliance Caveat
Greek planning law is complex, frequently amended, and varies significantly by location. The authaireta (unauthorised works) issue affects a substantial portion of older Greek property. This guide reflects the general framework as of mid-2026. Always commission a thorough urban planning due diligence check before purchase, and verify current permit requirements with a licensed Greek architect and lawyer before commencing works. Investment returns are not guaranteed; property values and rental income can fall as well as rise.
How Global Investments Can Help
Global Investments has active coverage of the Greek property market across the Cyclades, Ionian Islands, Crete, and Athens. We can connect you with licensed Greek architects, experienced renovation contractors, and specialist lawyers with international investor experience. Whether you are planning a full island house restoration or upgrading a mainland apartment, we bring practical market knowledge and a trusted professional network to your project. Contact us to discuss your Greek renovation plans.
This guide is for general information only and does not constitute financial, legal or tax advice. Programme rules, prices and tax rates change; verify current requirements with a qualified adviser before acting.