What if the house is hit by an earthquake, flood or wildfire? How to check hazard maps, what insurance covers (Consorcio in Spain, CatNat in France) and what to verify before buying.
Buyers of property abroad often know the sea and the price, but not the hazards: what happens if the area floods, burns or shakes? Natural hazards cannot be removed, but they can be checked, priced and insured. This article is a general overview with pointers to official sources, not an assessment of any particular property.
What buyers fear
The fear is concrete: an earthquake damages a flat the buyer has never seen at night, a river floods a ground floor, a wildfire reaches a villa in the hills, or a hurricane or rising sea hits an island investment. Behind it sits a second fear: the insurer will refuse to pay, or the property will become unsellable.
What the risk really is
Hazard (how likely an event is in the area) and vulnerability (how well this building and plot withstand it) are different things. A new, properly engineered building in a seismic zone can be safer than an old unreinforced one in a moderate zone. Insurance transfers part of the financial loss but does not cover everything, and insurers price and sometimes limit cover in known high-risk areas.
Climate-related extremes are also getting more attention. For example, the European Forest Fire Information System reported 2025 as the worst wildfire season on record in the EU, at over one million hectares burned, with Spain (about 393,000 hectares) and Portugal (about 278,000) the most affected, and Cyprus among the countries with its highest burnt area since records began in 2006. See EFFIS. One year is not a trend by itself, but it shows why checking matters.
How it works by country
Turkey (earthquakes). Turkey sits on active fault lines, and the 2018 national hazard maps produced under AFAD replaced the old zone map with location-specific values; the interactive tool is at tdth.afad.gov.tr, where you can enter coordinates and read the design ground-acceleration values for the site. For a buyer, the key variable is the age of the building and the code it was built to: sources describe the 2018 Turkish building code (TBDY-2018) as the current standard, and buildings from before it were designed to earlier rules. We did not verify which construction years correspond to which standards, so ask a structural engineer, and see our technical survey before buying. Soil type matters as much as the distance to a fault.
Greece (earthquakes, wildfires). Greece is seismically active, and reports say a new national seismic hazard map with five zones, aligned with Eurocode 8, is being adopted in place of the current three zones. We have not confirmed the status of that change from a government source. Wildfires hit Greek islands and forested coasts in many summers; check access roads, vegetation around the plot and the local civil-protection rules.
Italy (earthquakes, floods, landslides). Italy has both seismic and hydrogeological risk. ISPRA, the national environmental agency, publishes landslide and flood hazard maps on its IdroGEO platform, built from the river-basin authorities' plans. Enter the address and read the hazard class for the plot, then ask the notary or a technician about local building restrictions.
Portugal (wildfires, floods). The environmental agency APA has reported dozens of areas critically prone to flooding and runs flood-risk management plans; verify the plot on the official flood-risk maps. Portugal also had about 278,000 hectares burned in 2025 per EFFIS, so wildfire exposure of rural plots is a real due-diligence item.
Spain (floods, wildfires). The Valencia floods of late October 2024 were the largest flood loss the Spanish insurance consortium has handled: the Consorcio de Compensación de Seguros (CCS) reported more than 250,000 claims and over EUR 4 billion paid by November 2025. The lesson for buyers is practical: check whether the plot is in a flood zone and whether ground-floor or garage spaces sit in a ravine or drainage line. Spain also recorded the largest burnt area in the EU in 2025.
Cyprus (wildfires). Cyprus recorded its highest burnt area since 2006 in 2025 per the EFFIS-based reports. For villas near forest or dry scrub, look at the defensible space around the house and the fire-service access.
Thailand (floods, storms). The 2011 floods were the worst in about 70 years and reached parts of Bangkok. Ask the developer or the building's juristic person what happens in heavy rain, whether the ground floor or car park has flooded, and what the drainage and pumping arrangements are.
Dominican Republic, Maldives (storms and sea level). The World Bank-backed ThinkHazard tool rates the Dominican Republic's cyclone hazard as high, with more than a 20 percent chance of potentially damaging wind speeds in 10 years; see thinkhazard.org. The Maldives are extremely low: reported average ground level about 1.5 metres and highest point about 2.3 metres above sea level. Anyone considering an island or coastal investment there should read the developer's coastal-protection and insurance documentation with great care and take independent advice.
How to protect yourself
- Look up the exact plot on the official hazard maps of the country (seismic, flood, landslide, wildfire) and save screenshots with the date.
- Ask for the building year, the structural design standard, any structural reports and records of past damage or repairs. Order an independent survey.
- Ask neighbours, the building manager or the community of owners about past flooding, evacuation or damage.
- For homes near forest, check access roads and the clearance of vegetation required by local rules.
- Read the insurance policy before buying: ask a broker for a quote for the actual address and confirm the exclusions, deductibles, sum insured and conditions for empty or rented homes. See home insurance for property abroad.
- Understand state schemes: in Spain, the Consorcio de Compensación de Seguros covers extraordinary risks including floods when the property has a valid private policy that includes the Consorcio surcharge; see consorseguros.es. In France, the catastrophes naturelles (CatNat) cover is a mandatory extension of home insurance contracts and applies after a government decree recognises the event; see the economie.gouv.fr explanation. Reported CatNat contributions on property contracts rose from 12 to 20 percent from 1 January 2025. In many other countries no equivalent state backstop exists, so the private policy is all you have.
- Do not rely on a developer's brochure: ask for permits, structural certificates and, for new buildings, the handover documents; see snagging and handover and the pre-purchase checklist.
- Budget for higher insurance, maintenance and resale discounts in exposed areas.
When to involve a lawyer or notary
Involve a structural engineer or surveyor first for the building and plot. A local lawyer should confirm planning restrictions in flood or fire zones, whether the building is legally permitted, who bears the risk between contract and handover for off-plan units, and how the insurance and any mortgage conditions interact. See also illegal construction and missing permits.
FAQ
Is any area completely safe? No. Hazard is a matter of degree, so compare areas and building quality rather than looking for zero risk.
Does insurance cover everything? No. Policies have exclusions, deductibles and caps; state schemes such as the Spanish Consorcio or the French CatNat depend on a valid policy and on specific conditions. Read the policy for the address.
Can I check seismic risk myself? Yes, in Turkey via the AFAD interactive map, and in other countries via the national geological or civil-protection services. But the building's condition needs an engineer.
Are older buildings always worse? Not always, but age tells you which building rules applied. Ask for a survey instead of guessing.
Will natural risk hurt resale? It can, especially after a visible event in the area. That is why you check before buying and keep documents.
Do mortgages require insurance? Many lenders require buildings insurance; confirm with the bank.
How we help
D.H. Realting is a trilingual platform that finds properties and coordinates independent local lawyers, surveyors and tax advisers. We can help you gather the right maps and documents before you decide. This text is informational and is not legal, tax or investment advice. Hazard data and insurance rules change, so verify the current position with official sources and your insurer.