The expert may entrust to a third party who

Application pratique:

The Court of Cassation confirms an expert may delegate technical investigations to a third party with appropriate instruments. As a landlord, do not automatically challenge the delegation, but verify the third party's qualifications and ensure the final report explains how the lab results were used. Keep all correspondence and reports, and if you suspect improper delegation, raise it before the expert or judge within statutory deadlines. Seeking early legal advice can prevent costly litigation.

Application pratique:

Under this ruling, the expert may legitimately delegate technical soil testing to a specialist firm equipped for such investigations. As a buyer, ensure the geotechnical report is annexed to the expert's final report and that the expert's conclusions explicitly rely on it. If you believe the delegation was inappropriate, ask the judge to order a supplementary expertise. Always keep purchase deeds, previous inspection reports, and photographs; these strengthen your claim.

Application pratique:

The decision clarifies that an expert can entrust technical data collection, like drone thermal imaging, to a third party with appropriate instruments. As a co-owner, request the drone operator's report and verify how the expert integrated it; if the expert simply signed off without critical analysis, you may challenge the report. Attend all expert meetings, keep minutes and correspondence, and be aware of appeal time limits to protect your interests.