For a French property that requires an état des risques, the seller must provide it at the first viewing, if a viewing takes place, and the document must be less than six months old. That is the rule set out by Service Public, checked on 16 September 2026. It makes the risk report part of choosing the property, rather than paperwork to discover after choosing the curtains.
For an Alpine second home, this is a useful starting point. A balcony photograph tells you where you might have breakfast. It tells you considerably less about the slope above the building, the stream beside the garage or the only road into the neighbourhood. Buying well means putting those details alongside the view, floor plan and asking price. Here is a practical way to do that from abroad, without pretending that a coloured map can replace a technical assessment.
Start with the parcel, not the resort name
Ask the agent for the full address and cadastral references before arranging an expensive viewing trip. Check that the references cover everything being sold: the apartment building, any separately situated parking space and any additional land. A resort name is a starting point for a holiday search; it is too broad for this exercise.
The government's Géorisques guidance on buyer information explains that its ERRIAL service can generate a risk report from an address or parcel number. The owner must then check it, supplement it where necessary using prefecture information, and disclose relevant catastrophe-related insurance compensation. Downloading a report is therefore a useful research step, but does not complete the seller's job.
Keep your own dated copy in the purchase folder. Put the cadastral plan beside the sales plan and identify the entrance, garage ramp, cellars and access route. If the map pin lands on the village square rather than the building, correct it before drawing conclusions. For an apartment, ask which parts of the information concern your private lot and which concern the wider copropriété.
Our suggested test is simple: could someone who has never visited identify the property from the documents alone? If the answer is no, request a clearer plan. This small administrative chore is cheaper than commissioning an expert to assess the wrong parcel.
Read the rule attached to the colour
A risk map becomes useful when you can connect its shading to a written requirement. Where a prevention plan applies, Service Public says the report should include the relevant map extract, regulatory text and information on prescribed works and whether they have been completed. Ask for the annexes as well as the front page. Confirm with the notaire that the information remains current when the purchase documents are signed.
For avalanches, Géorisques describes the role of natural-risk prevention plans: they prohibit new projects in highly exposed zones and set protective requirements in less exposed ones. Those rules do not tell you that every existing property within a resort is equally exposed. Nor does an existing building answer every question about a proposed extension or change of use.
Ask the mairie or the relevant technical adviser to identify the exact zone and applicable provisions in writing. If a requirement mentions protective works, establish what the works are, who maintains them and what evidence exists of completion. Avoid translating a colour into a buying decision without reading its local legend. Your useful output is a short list of obligations and unanswered questions, each attached to a document or a named person.
Look beyond the winter photograph
The ecology ministry's account of natural hazards in mountain areas includes phenomena linked to glaciers and thawing permanently frozen ground, such as rockfalls and slope failures. This is a reminder to examine the terrain and infrastructure as well as snow. It is not evidence that a particular chalet is threatened: establishing that requires local information.
During a viewing, trace the route from the public road to the entrance. Look at retaining walls, drainage channels and the position of basement openings. Photograph anything you want an independent surveyor or engineer to explain. A crack is a question, not a diagnosis; a freshly painted wall is not proof of either a problem or its absence.
For a home you will leave empty for stretches of the year, ask who checks it after heavy weather and who can attend if access is disrupted. Request local information about road closures and alternative access rather than relying on a reassuring account of one owner's holidays. If you plan to let the property, ask the manager how guests are contacted when travel arrangements change. These are operational questions worth resolving even when the building itself raises no specific concern.
Keep radon and seismic classifications in proportion
France's seismic zoning uses five zones, from very low to high, as explained in the government's seismic information sheet. A classification describes a hazard framework. It does not grade the structural condition of the apartment you are buying. Ask the technical adviser what the classification means for this building and any works you propose.
Radon requires a different question. The Géorisques radon dossier explains that a commune's category does not establish the concentration inside an individual home. That depends on the building and how it is occupied. The information obligation concerns properties in category 3 communes, but an indoor measurement is needed to establish an actual concentration.
The same guidance describes testing for at least two months during the heating season, in at least two living spaces on the lowest occupied levels. A quick visit cannot supply that evidence. Ask whether an appropriate measurement already exists and seek advice on testing if it does not.
For a non-resident buyer, the practical point is timing. If you want technical evidence before committing, identify that requirement early and discuss the purchase timetable with your advisers. Do not promise yourself that every question can be answered during a weekend inspection.
Give new-build and resale different questions
With a resale, begin with the history of the actual building. Ask the seller about past damage, the supporting repair documents and the information supplied to insurers. For shared buildings, ask the managing agent about relevant inspections, remedial work and maintenance responsibilities. Keep the distinction between an event affecting the commune and damage affecting this property clear throughout the discussion.
For an off-plan purchase, the enquiry concerns a building that may not yet be available to inspect. Ask the developer for the parcel-specific risk documentation, the applicable planning requirements and an explanation of how the design addresses them. Where an engineer has produced a relevant study, request the conclusions applicable to the project and have your own adviser explain any limitations. A drawing of a retaining wall does not explain its maintenance arrangements.
Use separate columns in your comparison notes for existing evidence and promised delivery. An older apartment with documented repairs and a new apartment with specified protective measures present different files to assess. Neither should receive an automatic pass based on age.
If you are comparing new-build ski properties, keep this technical comparison separate from pricing. This article supplies no price discount, resale benchmark or premium for a hazard classification. Any negotiation needs evidence about the particular property and the actual work or restriction involved.
Ask the insurer before the purchase becomes urgent
Send a prospective insurer the precise address, intended use and relevant documents. Explain that this will be a second home, how it will be occupied and whether you intend to rent it out. Ask for a written proposal and an explanation of the provisions that matter to your plans, including any vacancy conditions, excesses and exclusions.
For an apartment, request the building policy information through the managing agent too. Then ask your adviser to explain where that policy ends and your proposed cover begins. Do not infer that a building policy settles every question about your contents, private improvements or letting activity.
Our recommendation is to treat insurance enquiries as another evidence check, rather than as a substitute for one. A quotation does not certify structural condition, and a survey does not describe every insurance term. Read them together. If either professional asks for a missing document, add it to the purchase checklist before the signing deadline becomes tomorrow.
Investors should also ask their letting manager to explain what happens operationally if the property cannot be used. Establish which costs would continue, which bookings would need attention and which policy, if any, addresses the relevant losses. Obtain the answer for the proposed arrangement; do not insert an assumed reimbursement into the rental forecast.
Turn the file into a buying decision
Finish with a short written record covering the parcel, applicable restrictions, evidence of relevant works, outstanding technical questions and insurance response. Give each unresolved point an owner and a deadline. This makes a discussion between an overseas buyer, agent, developer, surveyor and notaire much easier to follow.
Some answers will justify further investigation; others may establish a manageable maintenance task. A serious unresolved issue may justify changing the shortlist. The point is to make that decision using property-specific evidence while you still have room to act, with the contractual implications explained by your legal adviser.
Do not let a handsome view do the work of a missing report. Equally, do not reject a whole mountain town because a national website lists natural hazards. The useful question is what the information means for this parcel, this building and your intended use. Once that is clear, the balcony can return to its proper place in the conversation.
If you are preparing an Alpine shortlist, speak to Domosno about the homes that suit your plans and the property documents to request before your viewing trip.
