Building expert lawyer in Paris: urgent application, evidence and technical report.

A court-appointed building expert assessment is a fact-finding measure ordered by a judge and entrusted to an independent technician. Article 232 of the Code of Civil Procedure (code de procédure civile, CPC) provides that the judge may appoint any person of their choice to enlighten the court by findings, by a consultation or by an expert assessment on a question of fact requiring the knowledge of a technician (our translation).

The expert summons the parties, examines the defects on an adversarial basis, collects their written submissions, proposes remedial work and costs the works. The report is put before the court. The judge is not bound by the expert’s conclusions but rarely departs from them where the work is complete, reasoned and adversarial. The court-appointed expert assessment is the standard tool in any contested construction case.

Article 145 of the Code of Civil Procedure allows any interested person to request, by urgent application or on application without notice, a fact-finding measure before any trial. The usual route is a writ of summons for an urgent expert application before the court of the place where the building is situated.

The applicant must show a legitimate reason, that is, a credible and plausible fact with a useful link to a sufficiently determined potential dispute. The application sets out the mission proposed for the expert: examine the defects, identify their causes, cost the remedial work, give an opinion on responsibilities. The urgent applications judge rules, appoints an expert and sets the deposit. The procedure generally takes 6 to 10 weeks between the writ of summons and the order.

The legitimate reason is an intermediate evidential standard. The Second Civil Chamber ruled on 10 December 2020 that the assessment of the legitimate reason within the meaning of this provision is a matter for the sovereign discretion of the trial judge (Cass. 2e civ., 10 Dec. 2020, No. 19-22.619, published in the Bulletin) (our translation).

In practice, the lawyer builds the legitimate reason on three pillars. First pillar: the reality of the defect, proved by dated photos, technical statements, remedial quotes or a bailiff’s report. Second pillar: the possible link with an identified builder or a ten-year liability insurer. Third pillar: the prospect of a plausible dispute on the merits, an action under the ten-year, two-year or contractual warranty. Without an established legitimate reason, the measure is refused.

The cost depends on the complexity of the case. The initial deposit set by the order generally ranges between €2,000 and €6,000 for an ordinary construction case, and may reach €15,000 or more for a large site or several work packages. The deposit is advanced by the party applying for the assessment.

The expert’s final fees are set by the taxation order at the close of the operations. At the merits stage, the expert assessment costs fall within the costs of proceedings (dépens) and are borne by the losing party. An applicant who succeeds therefore recovers the deposit. Where responsibilities are shared, the costs are apportioned between the parties pro rata.

The deposit is paid by the party requesting the assessment, generally the project owner. It is lodged with the court’s cashier (régisseur), who later makes it available to the expert to cover fees and expenses. Failure to pay the deposit within the time allowed causes the measure to lapse.

Article 282 of the Code of Civil Procedure governs the filing of the report and the expert’s request for remuneration. The final taxation may exceed the initial deposit; a further sum may then be requested from the parties. The applicant should anticipate this item to avoid an unpleasant surprise during the assessment.

The average duration of a building expert assessment is between 8 and 18 months from the expert’s appointment to the filing of the final report. The useful phase begins with a first meeting on site, generally within two months after the deposit is paid, and continues with further meetings, written submissions, test openings and a pre-report.

Factors that lengthen the duration: many parties involved, destructive testing, waiting for a further assessment in another discipline, disputes over the classification of the defects. Conversely, a simple case with two or three well-organised parties and isolated defects can lead to a final report in 6 to 8 months. The firm assesses this duration from the first appointment in order to calibrate the strategy.

Yes. Article 234 of the Code of Civil Procedure provides that technicians may be challenged on the same grounds as judges (our translation). The request must be made before the judge who appointed the expert or the judge in charge of supervision, before the operations begin or as soon as the ground is revealed.

The Second Civil Chamber ruled on 27 February 2020 that only the applicant for the challenge is a party to the procedure for challenging an expert (Cass. 2e civ., 27 Feb. 2020, No. 18-24.066, published in the Bulletin) (our translation). The Court of Cassation quashed the judgment of the court that had ordered the applicant to pay the costs of the other parties to the main dispute. Typical grounds for challenge: a personal link with a party, a previous assessment on behalf of one of them, involvement in the same case as a private adviser.

Preparing the documents determines the quality of the report. On the project owner’s side: works contract, accepted quotes, acceptance report, list of snags, letters notifying the defects, chronological photos, invoices, building-damage insurance certificates, amicable expert reports where applicable. On the contractor’s side: signed contract, schedule and site meeting minutes, letters lifting snags, ten-year liability insurance certificates, detailed invoices.

The file is given to the expert under a schedule of documents, in two copies, before the first meeting. Clear numbering makes later written submissions easier. Documents with Post-it notes or illegible photocopies should be avoided. The expert appreciates an orderly and complete file, which generally results in a report more favourable to the party that made the effort to organise it.

The contractor’s refusal to take part in an amicable adversarial expert assessment is not an obstacle. You then switch to an Article 145 urgent application to obtain a court-appointed expert assessment. Proof of the refusal helps establish the legitimate reason: registered letter, formal notices, statements.

The lawyer applies to the urgent applications judge of the court of the place where the building is situated. The writ of summons cites all potential parties involved and their insurers. The procedure is quick: an order generally within 6 to 10 weeks. Once the expert is appointed, the contractor is summoned as of right and can no longer avoid the measure. If it does not appear, the expert continues the operations and notes its absence in the report, which will remain binding on it.

An amicable adversarial expert assessment, that is, one conducted in the presence of the duly summoned parties, has real probative value. The Third Civil Chamber ruled on 15 November 2018 that since these elements had been open to discussion by the parties, the court of appeal could, without breaching the adversarial principle, rely on the court-appointed expert report drawn up in proceedings between the landlord and her partner and on the expert report drawn up unilaterally at her request (Cass. 3e civ., 15 Nov. 2018, No. 16-26.172, published in the Bulletin) (our translation).

An amicable expert assessment, even a non-adversarial one, can therefore feed the debate once it is put before the court and submitted for discussion. It does not replace a court-appointed expert assessment but may be enough in simple cases where liability is not seriously disputed. The lawyer often uses this route to avoid the cost and delay of an urgent expert application.

A dire is a written note sent by a party to the expert to put forward its observations, raise questions, request further investigations or challenge interim conclusions. It is the hallmark of the technical lawyer, who follows the expert operations and orchestrates the client’s defence.

A well-constructed dire has three parts. First part: a reminder of the facts and of the mission. Second part: the technical observations, supported by the documents and statements filed. Third part: the precise requests (test opening, hearing of a given party involved, adversarial examination of an item). The submissions are annexed to the final report and the court examines them carefully. A party that refrains from making submissions considerably weakens its position on the merits.

Yes. The First Civil Chamber ruled on 14 November 2018 that a party to proceedings in which a court-appointed expert assessment was carried out may have a breach by the expert of the principle of impartiality or of the adversarial principle sanctioned by seeking its nullity, in accordance with the provisions of Article 175 of the Code of Civil Procedure (Cass. 1re civ., 14 Nov. 2018, No. 17-27.980, published in the Bulletin) (our translation).

Nullity must be requested before any defence on the merits. Once the defence has begun, nullity is in principle cured. Beyond nullity, the party may criticise the report on its substance: insufficient reasoning, omitted documents, erroneous classification. The judge has sovereign discretion over the value and scope of the report and may depart from it if it is insufficiently supported.

No. The expert report is a technical opinion, never a decision. The First Civil Chamber ruled on 11 July 2018 that although a court-appointed expert report is binding on a party only where that party was called or represented during the expert operations, the judge may not nevertheless refuse to take the report into consideration where it has been properly put before the court and submitted for adversarial discussion by the parties; the judge must then examine whether it is corroborated by other evidence (Cass. 1re civ., 11 July 2018, No. 17-17.441, published in the Bulletin) (our translation).

The judge retains discretion. The judge may accept, set aside or qualify the expert’s conclusions. In practice, where the report is complete and adversarial, the judge follows it 80 or 90 per cent of the time. The scope for argument then lies in the costing, shared responsibilities or indirect losses.

The Paris judicial court (tribunal judiciaire) has jurisdiction where the building is situated in Paris. The last paragraph of Article 145 of the Code of Civil Procedure provides that by derogation from the second paragraph, where the fact-finding measure concerns a building, the court of the place where the building is situated has sole jurisdiction (our translation).

For sites in the inner suburbs, the judicial court of Bobigny, Créteil, Nanterre or Versailles has jurisdiction depending on the municipality. The firm, located at 11 rue Margueritte 75017 Paris, regularly argues urgent expert applications before all of these courts and coordinates expert operations throughout the jurisdiction of the Paris court of appeal.

Before the judicial court, representation by a lawyer is in principle mandatory for any claim above €10,000. In an urgent expert application, the measure has no monetary value in itself, but the potential dispute to which it relates almost always exceeds the threshold. The established practice is therefore to instruct a lawyer.

Beyond the legal requirement, the lawyer’s added value lies in drafting the writ of summons, wording the expert’s mission and arguing the legitimate reason at the hearing. A badly framed mission leads to a worthless report; a well-constructed mission steers the expert towards the decisive questions. The firm systematically drafts the mission according to the potential dispute on the merits.