Liability of the Builder for Design Defect: The Judgment of the Court of Cassation of 3 May 1995

Imagine: you are the manager of a printing works in Montargis, and you have just invested €150,000 in a new rotary press. Proudly installed on a custom-made metal walkway, it is supposed to run at full speed to fulfil your orders. But from the first rotations, the floor vibrates, the machine rocks, and within hours, it is a complete shutdown. Your turnover collapses, your clients grow impatient. Whose fault is it? The walkway manufacturer? The engineering firm? Or your own, for not anticipating the problem?

This question was decided by the Court of Cassation on 3 May 1995 in a landmark construction law case. It held that a company, even a subsidiary of a group, may incur quasi-delictual liability if it personally intervenes in the design of a structure and fails to verify the actual technical constraints – here, the vibrations of a rotary press in operation. What is true for a printing works in Lyon is equally true for a renovation project in Olivet: the professional who designs must foresee everything.

In short, this decision protects the project owner (the party commissioning the works) against hidden defects, even if the builder is not directly bound by a contract with him. But it also reminds the professional that he must be irreproachable in his preliminary study. So, how to avoid this type of dispute? Let's dive into the facts.

The Facts: A Story Like Many Others

In 1988, the company Rhône Offset Presse, specialised in printing, commissioned from the company Lyon-Métal a metal walkway intended to support a rotary printing press. The walkway was to be installed in its premises in Lyon. But Lyon-Métal was not a mere executor: it carried out a study, prepared plans and a calculation note based on data from the press supplier. Problem: once the machine was put into service, excessive vibrations occurred, rendering the installation unstable and causing production to stop.

The company Rhône Offset Presse suffered significant operating losses. It then sued Lyon-Métal for liability. But Lyon-Métal was a 99% subsidiary of the company Brisard-Nogues (the parent company). The project owner therefore decided also to sue the parent company on the basis of quasi-delictual liability (Article 1382 of the Civil Code, now Article 1240), claiming that it was the parent company that had designed and supervised the operation.

Before the Lyon Court of Appeal, the company Brisard-Nogues was held liable. It appealed to the Court of Cassation, arguing that it had only provided plans and a study to its subsidiary, without personally intervening in the execution. But the Court of Cassation dismissed its appeal on 3 May 1995. It held that the parent company had played an active role in the design, that it had failed in its professional obligations by not inquiring about the vibrations generated by the rotary press, and that its quasi-delictual liability was therefore engaged.

The Reasoning of the Court — Analysed

The High Court relied on Article 1382 of the Civil Code (now Article 1240), which provides that "any act of a person which causes damage to another obliges the person by whose fault it occurred to make reparation." In other words, even without a contract, if you commit a fault that harms someone, you must compensate them.

But what constitutes a "fault" here? The Court of Cassation specified that the company Brisard-Nogues itself carried out the study of the walkway, prepared the calculation note and the plans based on those of the supplier. In doing so, it personally intervened in the construction operation and played an active role. Now, a reasonably diligent professional should have verified the impact of the vibrations of the rotary press in operation on the structure of the walkway. Failing to do so constitutes a breach of its professional obligations.

However, quasi-delictual liability is not automatic. The judges examined whether the parent company had committed a fault distinct from that of its subsidiary. Here, yes, because it personally participated in the defective design. The decision does not create "group liability," but it sanctions the direct interference of a parent company in the execution of a contract by its subsidiary.

What few people know is that this case fits into a broader trend of courts extending professionals' liability beyond the contractual framework. The Court of Cassation here confirms that the builder's duty to advise and verify does not stop at the boundaries of the company that executes the works.

What This Changes for You — Concretely

If you are the owner of a commercial premises in Olivet and you commission a complex technical installation, you benefit from enhanced protection. If the builder (even a subsidiary) makes a design error, you can turn against the parent company if it was involved in the study. Concretely, this means you have an additional target to obtain compensation, especially if the subsidiary is not very solvent.

For tenants, the reasoning is similar: if you suffer harm (for example, loss of business) due to a design defect in a structure built by a subsidiary, you can sue the parent company if it participated in the design.

For real estate professionals – architects, engineering firms, builders – this decision is a warning. You cannot hide behind a subsidiary or subcontractor to escape liability. As soon as you personally intervene in the design, you must verify everything. undefined, I have encountered cases where a builder neglected to study dynamic loads (vibrations, wind, etc.) on a frame. Result: cracks and a challenge to the decennial guarantee.

Four Tips to Avoid This Type of Dispute

• Have a soil and dynamic load study carried out: Before any construction of a structure supporting machinery, a specialised engineering firm must assess vibrations, mechanical stresses and resonance frequencies. Do not rely solely on the manufacturer's data.
• Require a decennial guarantee: Check that all parties involved (builder, subsidiary, parent company) are covered by decennial insurance. This will allow you to obtain compensation for 10 years after acceptance of the works.
• Draft a detailed specification: Explicitly mention the expected technical constraints (weight, vibrations, operating cycles). This will serve as evidence in case of dispute.
• Appoint an independent project manager: A professional not linked to the construction company can supervise the study and the works, and detect any shortcomings.

Further Reading: Related Case Law and Developments

This 1995 decision is part of a line of judgments that have strengthened the quasi-delictual liability of professionals. For example, the Court of Cassation judgment of 4 December 1990 (No. 89-12.765) had already held an architect liable for failure to advise a non-contracting project owner. More recently, case law has extended this liability to parent companies that interfere in the management of their subsidiaries (particularly in construction matters).

The trend is therefore towards increased protection of the project owner, to the detriment of groups that try to hide behind a subsidiary. However, quasi-delictual liability requires a personal fault. If the parent company merely gives general directions without intervening in the design, it will not be held liable.

In the future, one can expect courts to require more and more diligence from professionals, particularly in terms of preliminary studies. The duty to advise becomes a safety net for owners.

In Practice: What to Do

1. What to do if you suffer similar harm?
Gather all documents: plans, calculation notes, emails, invoices. Identify all parties involved (subsidiary, parent company, supplier). Consult a lawyer specialised in property law to assess the chances of success of a quasi-delictual liability action (limitation period: 5 years from discovery of the damage).

2. Can I sue the parent company even if I have no contract with it?
Yes, if it committed a personal fault in the design or execution. This is confirmed by the decision of 3 May 1995.

3. What amounts are at stake?
In this case, the harm included loss of business and repair costs. Depending on the case, compensation can reach several hundred thousand euros. In Montargis, a printing works that suffered a three-month shutdown obtained €200,000 in damages.

4. What are the time limits to act?
The quasi-delictual liability action is subject to a 5-year limitation period from the manifestation of the damage. But it is better to act quickly to preserve evidence.

5. What should I do if I am a builder and want to avoid this type of claim?
As soon as you intervene in a design, take out appropriate professional liability insurance. Formalise your studies in writing and have them validated by an independent expert. Do not neglect any technical constraint.

Are you in a similar situation? A first 30-minute consultation with Maître Zakine (€45) can save you months of proceedings – and often much more. Book an appointment →