EXPERTISE — SNAGGING
You signed off on the snag list, relieved it was over. Three months later, a crack appears in the living room, or the bathroom tiles start lifting. It wasn’t on the list. Across Provence-Alpes-Côte d’Azur, a significant share of off-plan (VEFA) disputes involve defects discovered after handover. In Toulon, with the marine climate, that figure often climbs higher.
What you see — and what it’s really hiding

A fine crack on the load-bearing wall. The developer tells you: « That’s normal, the building is settling. » Yet you have a bad feeling about it.
What I often find in these cases, particularly on Toulon building sites, is confusion between acceptable differential settlement and an actual structural defect. Last year, for a client in Toulon, a 2 mm crack on the façade was dismissed as a « cosmetic flaw. » In reality, it revealed a foundation problem on backfilled ground near the harbour. The snag-list sign-off is an administrative document — it is not a technical finding. Only a thorough survey, with precise measurements, can determine whether the defect was already present but hidden at handover, or appeared afterward. Frankly, that’s where everything is decided.
The calculation that proves the defect
Take a concrete example: a floor that « gives » in a new Toulon apartment. You feel a dip when you walk. The formula for allowable deflection in a concrete floor slab is f_adm = L / 500. Where L is the span between supports. For a room 8 metres wide (L=8000 mm), the maximum tolerable deflection is: f_adm = 8000 / 500 = 16 mm.
Now let’s measure reality. Using a precision optical level (±0.5 mm/m accuracy) and a laser distance meter, readings are taken every metre. On the Toulon site in question, the survey recorded a maximum deformation of Δh = 22 mm. The check is immediate: 22 mm > 16 mm. That’s a 6 mm gap beyond tolerance. In practical terms, the floor shows excess deflection of 37% above the standard. This is no longer the concrete « settling » — it’s a design or workmanship defect, covered under Article 1792-6, paragraph 2 of the French Civil Code, concerning defects affecting the structural soundness of the building.
What happens if you let it go
Within 6 months, cracks in lightweight partitions worsen. Doors start sticking. You live with a daily nuisance.
In the medium term, 2 to 5 years out, the pathology worsens. Excessive floor deflection fatigues flooring finishes. In Toulon, with salt-laden humidity, hairline cracks can become entry points for moisture, leading to waterproofing failures or reinforcement corrosion. Repair costs initially estimated at €5,000 for a localised fix can balloon to €25,000 if major structural work becomes necessary. Without action, the builder’s 10-year decennial warranty could even become harder to invoke later, against the argument of damage aggravated by lack of maintenance.
Remedies and warranties: what you’re entitled to demand
Article 1641 of the French Civil Code is clear: the seller is liable for hidden defects. Article 1792-6, paragraph 2 specifies that the builder is liable for defects affecting structural soundness or rendering the building unfit for its purpose. These provisions apply even after the snag list has been signed off, for defects that were not detectable at handover. The process is well defined: formal notice by registered letter (LRAR) to the developer/builder, appointment of an independent expert (a building or planning expert is appropriate here) to jointly assess the defect and its cause, and, if refused, referral to the Toulon judicial court. What nobody tells you: acting quickly strengthens your position and avoids the statute of limitations. In practice, in Toulon, a well-documented file with a costed expert report often results in the work being covered without ever going to court.
Frequently Asked Questions
Defect discovered after the snag list was signed off: what should you do?
You can take action if the defect renders the building unfit for its purpose or affects its structural soundness (decennial warranty). Have it assessed by an independent expert, then issue formal notice to the builder. The deadline is 10 years from handover.
What’s the difference between a cosmetic flaw and a construction defect?
A cosmetic flaw affects neither soundness nor use. A construction defect, such as a structural crack or excessive floor deflection, compromises the soundness of the building. Only an expert can determine this with precise measurements.
How much does an expert survey for post-handover defects cost in Toulon?
Expect to pay between €800 and €2,500 for a full survey with report, depending on complexity. In Toulon, costs can be shared if you’re in a co-ownership. This cost is often recovered if the builder is found liable.
How do you prove a defect existed before the snag list was signed off?
An expert assessment with objective measurements (levelling, crack monitoring) can demonstrate the defect was present but not visible. For example, excessive floor deflection can still be measured after handover. The expert report serves as evidence.
What are the deadlines for taking action after discovering a defect?
For defects covered by the decennial warranty, you have 10 years from handover. But act quickly: as soon as you discover it, send a registered letter to the builder and call in an expert. The limitation period runs from when the damage becomes apparent.
Need an expert? See our dedicated page: VEFA Expertise — response within 48 hours across the Alpes-Maritimes and Var.
📅 Updated on 12/08/2026 — By Cassini Expertise, independent building expert covering departments 06 & 83. Free quote: 04 22 46 06 04.
Further reading:
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📅 Mis à jour le 25/09/2026 — Cassini Expertise, expert bâtiment indépendant (06·83·13·40).