VEFA Plan in Nice: Detecting Hidden Non-Conformities at Delivery

EXPERTISE — VEFA (Sale in Future State of Completion)

You have just received the keys to your new apartment in Nice. The VEFA plan (Vente en l’État Futur d’Achèvement, i.e., sale before completion) promised a bedroom of 12 m². You measure: 10.8 m². That is 1.2 m² missing, a 10% discrepancy. The developer tells you: “It’s within tolerances.” Is that true? Not so simple.

What You See — and What It Really Hides

On the plan, the bedroom is a perfect rectangle of 3.00 m × 4.00 m. In reality, a fire-rated wall running through reduces the width to 2.70 m. To the naked eye, you don’t see the difference. But with a laser meter, the gap is obvious. What I often see on deliveries in Nice: developers play on partition thicknesses, technical ducts, or facade offsets not shown on the plan. The VEFA plan is a contractual document, but it is not always consistent with execution.

On a case in Nice last year, I measured a living room supposed to be 25 m²: it was 23.1 m². The developer invoked the 5% tolerance provided by standard NF EN ISO 5455. But this standard concerns drawing tolerances, not delivered surfaces. The French Construction Code (CCH art. L261-1) requires delivery conforming to the plan. The 5% tolerance is a jurisprudential rule, not a law. And 10% is too much.

The Calculations That Change Everything

Let’s take a typical case in Nice: a bedroom advertised as 12 m². Actual measured area: 10.8 m². Difference = 1.2 m², i.e., 10%. Standard NF EN ISO 5455, paragraph 4.2, sets a tolerance of ±2% for linear dimensions on plans at scale 1/50. But it does not apply to areas. Case law (CCH art. L261-1) admits a maximum area deviation of 5% for new housing. Beyond that, the developer must compensate or rectify.

Concretely: your bedroom of 10.8 m² instead of 12 m² is a 10% deviation. That’s twice the tolerance. What this means: you can demand a proportional price reduction or rectification. In Nice, the market is tight: one m² is worth on average €6,000. 1.2 m² × €6,000 = €7,200 in lost value. The developer knows this and often prefers to negotiate.

What Happens If You Do Nothing

Six months after delivery, you want to resell. The notary measures: 10.8 m². The price drops by €7,200. Worse: if the deviation exceeds 5%, the next buyer can sue you for hidden defects. You lose twice.

At two years, micro-cracks appear around the fire-rated wall not shown on the plan. The poorly positioned technical duct reduces sound insulation. Neighbors complain. Repairs cost €3,000 to €5,000. Without recourse, everything is on you.

Recourse and Guarantees: What You Can Demand

You are protected by the conformity guarantee of CCH art. L261-1: the developer must deliver a property conforming to the plan. Send a registered letter with acknowledgment of receipt within 30 days of delivery, listing the deviations. Have an expert (like me) document with laser distance meter measurements and a report. If the developer refuses, file a claim with the Nice judicial court. Nice case law is clear: beyond 5%, non-conformity is established. You will obtain compensation or rectification. Don’t let 1.2 m² slide: in Nice, every square meter counts.

📅 Mis à jour le 15/08/2026 — Par Cassini Expertise, expert bâtiment indépendant 06 & 83. Devis gratuit : 04 22 46 06 04.

Questions fréquentes

What is a VEFA plan in Nice?

A VEFA plan in Nice refers to the purchase agreement for a property before completion (vente en l'état futur d'achèvement). It outlines the delivery timeline, specifications, and legal protections for buyers, ensuring the developer completes the property as promised.

How to detect hidden non-conformities at VEFA delivery?

At delivery, hire an independent expert to conduct a thorough inspection, compare the finished property against the VEFA contract's detailed plans and specifications, and check for issues like material substitutions, size discrepancies, or missing features. Document everything and report any non-conformities to the developer within the legal timeframe.

What are common non-conformities in VEFA properties?

Common issues include changes in materials or finishes, incorrect room dimensions, missing amenities like balconies or parking spaces, faulty installations (plumbing, electrical), and delays in completion. These can often be hidden, so professional verification is crucial before signing the delivery acceptance.

📅 Mis à jour le 19/09/2026 — Cassini Expertise, expert bâtiment indépendant (06·83·13·40).