Why are cracks multiplying in 2026 in the South-East of France?
Episodes of intense drought, followed by heavy rainfall, cause clay soil movement that is particularly common in the Alpes-Maritimes (06) and Var (83). These moisture variations lead to differential settlement, which shows up as cracks in load-bearing walls, facades or floors. In 2026, experts are seeing a surge in structural disorders in both recent and older buildings, notably in Antibes, Cannes, Grasse, Nice and Toulon.
Warning signs you shouldn’t ignore
- Stepped or diagonal cracks on exterior walls
- Doors and windows that stick when opening
- Horizontal cracks with detached masonry joints
- Sagging slabs or floors
- Detached finishes (tiling, plaster)
- Energy performance certificate (DPE) 2026 in the Alpes-Maritimes: new rules and what is at stake (2)
- Second-opinion assessment: when the insurer's expert undervalues the damage
- Dommages-ouvrage (DO) insurance: deadlines and claim declaration procedure
- RGA (clay shrinkage) drought compensation: the CATNAT procedure step by step
- Cracks in a house: drought, poor workmanship or foundation defect?
- Structural diagnosis in the Alpes-Maritimes: when to call in a building expert
- PACA 2026 seismic standards: construction guide for Antibes and Nice
- Boundary marking by agreement or by court order: procedure and costs in the Alpes-Maritimes
- Construction defects: ten-year (décennale) liability in the Alpes-Maritimes (2)
- VEFA (off-plan) 2026: handover and delivery in the Alpes-Maritimes
These symptoms can indicate a structural disorder requiring a thorough building expert assessment. Early intervention prevents damage from worsening and protects your property’s value.
Cassini Expertise’s assessment method
Our firm, based in the Alpes-Maritimes, operates across the 06, 83 and 13 departments. Our approach combines:
- A detailed visual analysis of cracks (location, width, progression)
- Precision topographic surveys to measure deformation
- A study of the soil and surroundings (vegetation, drainage, geology)
- Review of construction documents (plans, soil survey reports)
We deliver an expert report that meets the requirements of insurers and courts, essential for any insurance claim or legal proceeding.
Legal and financial consequences in 2026
Since the home insurance reform, homeowners must prove the link between the damage and the drought. An independent assessment is often decisive in securing compensation. In the Var as in the Alpes-Maritimes, claim processing times are getting longer; a solid technical report speeds up the process.
Additionally, the ELAN law and new seismic standards impose stricter controls on new buildings. Sellers must provide a natural and technological risk disclosure, including any existing cracks. A structural diagnosis carried out by an independent expert reassures buyers and facilitates property transactions in Nice, Cannes or Toulon.
Why call in a surveying expert?
Topography plays a key role in analysing structural disorders. Using high-precision measuring instruments (total stations, GPS), we detect micro-movements invisible to the naked eye. This data lets us quantify the extent of the settlement and propose suitable reinforcement solutions (resin injection, micropiles, drainage).
Our dual expertise in building assessment and surveying provides a comprehensive view of the damage, essential for complex cases.
Fast response across the Alpes-Maritimes and Var
Cassini Expertise travels throughout every municipality in the Alpes-Maritimes (06) and Var (83), including rural and coastal areas. We offer appointments within 2 to 5 days and a detailed report within 10 business days. Our coverage area includes Antibes, Cannes, Grasse, Nice, Toulon, as well as towns such as Fréjus, Draguignan and Menton.
For any questions or to schedule an assessment, call us on 04 22 46 06 04. We answer personally and advise you on the next steps.
Conclusion: act before it’s too late
Cracks aren’t just a cosmetic issue: they can compromise a building’s structural integrity and its value. In 2026, with extreme weather events on the rise, preventive assessment has become essential. Whether you’re a homeowner, a property manager or a real estate professional in the Alpes-Maritimes or the Var, don’t wait for the damage to worsen.
Cassini Expertise supports you with reliable technical solutions and a free quote for any intervention in the 06, 83 and 13 departments. Call now on 04 22 46 06 04.
For a property in Nice, discover our VEFA Nice expertise for handover assistance.
For a property in Cannes, discover our VEFA Cannes expertise for handover assistance.
Go further
📅 Updated on 24/07/2026 – By Cassini Expertise, independent building expert covering 06, 83 & 13. Free quote: 04 22 46 06 04.
Go further:
Frequently asked questions
What causes cracks in houses?
Cracks can result from ground movement (clay shrink-swell), foundation defects, moisture variations, or vibrations. In the Alpes-Maritimes, drought and clay soil are common factors. An expert assessment identifies the exact cause.
How do I know if a crack is dangerous?
Structural cracks are generally wide (over 2 mm), run through the wall, or come with doors/windows that no longer close properly. Surface cracks are usually harmless. An expert can assess stability and recommend appropriate action.
What does a crack assessment cost in 2026?
The cost varies with the building’s size and the complexity of the case, generally between €500 and €2,000. In the Alpes-Maritimes, rates can be higher in high-demand areas. Assessments are often reimbursed by insurance when the claim is covered.
Further reading: Structural Cracks & Defects: Building Expert Assessment 2026 in the 06, 83 & 13
Survey carried out by Frédéric Faucouneau, independent building expert – Antibes, Alpes-Maritimes (06), Var (83), Bouches-du-Rhône (13). Find out more
📅 Last updated 06/11/2026 - Cassini Expertise, independent building expert – departments 06, 83 and 13.