VEFA Delivery in Nice: 12 cm Discrepancy in Living Area — What to Do?

EXPERTISE — VEFA (Sale of Future Completion)

You have just taken possession of your new apartment in Nice, in the Libération district. The developer hands you the keys with a smile. You compare the VEFA plan (pre-sale plan) with reality: the living room seems narrower. You take out your laser measure: 3.88 m instead of the announced 4.00 m. That’s a 12 cm discrepancy. In a room of 20 m², that’s significant. And it may only be the beginning.

What You See – and What It Really Hides

The wall is straight, the paint fresh. Yet the measurement doesn’t match. You remeasure three times. Same result. You look at the plan: scale 1/50, dimension 4.00 m. You measure on the plan with a ruler: 8 cm, which is 4 m at scale. The plan is correct, but the delivered apartment is not. Why?

What I often see in such cases: the developer changed the partition layout during construction without updating the VEFA plan. Or the concrete slightly shifted, and formwork tolerances accumulated. On a case in Nice last year, I measured an 18 cm discrepancy in the length of a bedroom. The developer invoked the 5% tolerance of the CCH (French Construction and Housing Code). But 18 cm over 4 m is 4.5%, just below. The buyer had to accept. Except that the total surface fell below the 5% threshold? Not always.

The Calculations That Change Everything: Surface and Tolerance

The rule: Article L261-1 of the CCH (French Construction and Housing Code) allows a 5% deviation on the total habitable surface area, unless a more restrictive clause applies. But note: the deviation is calculated on the total surface, not room by room. Formula: ΔS = S_theoretical − S_actual. If S_theoretical = 65 m² and S_actual = 62.5 m², then ΔS = 2.5 m², i.e., 3.85%, below the threshold. But if you accumulate deviations from each room, the total may exceed 5%.

Example for a 3-room apartment in Nice: living room 20 m² (instead of 21), bedroom 1: 12 m² (instead of 12.5), bedroom 2: 10 m² (instead of 10.5), kitchen 8 m² (instead of 8.2). Total theoretical: 52.2 m². Actual: 50 m². That’s a 4.2% deviation. Below 5%, but the developer must still justify. If the deviation exceeds 5%, you can demand a proportional price reduction or even cancel the sale (CCH art. L261-1, para. 2).

What Happens If You Do Nothing

You sign the delivery report without reservations. Six months later, you want to resell. The notary remeasures: the surface differs by more than 5% from the VEFA plan. The buyer withdraws. You lose the sale and must sue the developer, but you have already accepted the property. Complicated.

Another scenario: a partition misalignment may hide a more serious problem: a poorly positioned load-bearing wall, a structural error. In Nice, seismic zone 4, tolerances are strict. A 12 cm deviation can cause unforeseen stresses in the bracing. Repair cost: €5,000 to €15,000. And if the developer goes bankrupt? You are left with the defect.

Recourse and Guarantees: What You Can Demand

You benefit from the conformity guarantee (CCH art. L261-1). Send a registered letter with acknowledgment of receipt to the developer within 30 days of delivery, listing the non-conformities. Attach your photos and measurements. If they refuse, file a claim with the judicial court of Nice. You can also appoint an independent expert, such as Cassini Expertise, for a joint inspection. The standard NF EN ISO 5455 specifies dimension tolerances on plans: at scale 1/50, a dimension may vary by ±0.2 mm, i.e., 1 cm actual. Your 12 cm deviation is therefore well outside tolerance. Don’t let it slide.

📅 Updated on 17/08/2026 — By Cassini Expertise, independent building expert covering the Alpes-Maritimes (06) & Var (83). Free quote: 04 22 46 06 04.

Frequently Asked Questions

VEFA surface discrepancy 12 cm what to do?

If the delivered living area is more than 5% smaller than the VEFA contract, you can claim a proportional price reduction. For a 12 cm discrepancy, check if the difference exceeds the legal tolerance; if so, send a formal notice to the developer and consider legal action.

Can I refuse VEFA delivery if surface area is wrong?

You can refuse delivery only if the discrepancy is significant and affects the habitability or if the developer cannot remedy it. For a minor 12 cm difference, it’s better to accept delivery under reserve and then file a claim for price reduction.

How to calculate VEFA surface area discrepancy?

Measure the living area according to the Carrez law (excluding walls, stairs, etc.) and compare it to the area stated in the VEFA contract. The percentage difference is calculated as (contract area – actual area) / contract area. If it’s over 5%, you are entitled to a price reduction.

📅 Mis à jour le 25/09/2026 — Cassini Expertise, expert bâtiment indépendant (06·83·13·40).