Abandoned construction site lawyer in Paris: prove it, have the works finished, claim on insurance.

The law imposes no particular form, but a bailiff's report remains the most useful document. It fixes the date, the state of progress, the materials left on site and the absence of any crew at work. Photographs, messages and site meeting minutes then supplement it.

In a case decided at Montpellier, the bailiff (huissier de justice) had noted "the unfinished works, the existence of numerous defects and the absence of any worker on the site" (our translation) (CA Montpellier, 3rd civil ch., 30 January 2025, No. 20/03986). That report, followed by a formal notice and a notification of the use of another contractor, made it possible to build the account between the parties. The court also took into account a clause of the contract that required such a report in the event of abandonment.

The report does not replace technical analysis: it describes what can be seen, without saying why a piece of work is defective. Where construction defects are at issue, it is a useful preparation for an expert assessment. Have it drawn up before the contractor called in to take over the works intervenes, failing which the initial state disappears and the sharing of liability becomes uncertain.

Also check the general conditions of the quotation or contract: some contracts provide for the form of the report, its notification to the contractor or a waiting period before replacement. Complying with these terms avoids a dispute over the regularity of the process.

Summoning the contractor is not always mandatory, but it changes the value of the document. A report or expert assessment carried out in the contractor's absence is still put before the court and debated by the parties; however, it carries less weight when it stands alone.

The Third Civil Chamber of the Court of Cassation holds that, except in cases provided for by law, "the judge may not base a decision exclusively on a non-judicial expert assessment carried out at the request of one of the parties" (our translation) (Cass. 3e civ., 14 May 2020, No. 19-16.278). The same judgment specifies that this rule applies even if the assessment was carried out in the presence of the parties. An amicable expert assessment must therefore be corroborated by other evidence.

The Paris Court of Appeal accordingly accepted reports made in the contractor's absence because they were confirmed by the court-appointed expert assessment ordered afterwards (CA Paris, pole 4, ch. 5, 20 March 2024, No. 21/05972). Summoning the contractor by registered letter, stating the date, time and purpose of the report, therefore remains the best precaution.

If the contractor does not attend, its absence is recorded in the report. It will hardly be able to complain afterwards that the project owner did not involve it in describing the site.

Yes, where the contractor's obligation is not seriously contestable. Article 835 of the Code of Civil Procedure (Code de procédure civile) allows the urgent applications judge (juge des référés) to award an interim payment or order performance of an obligation to do something. Article 145 of the same code also allows an expert assessment to be ordered before any proceedings, in order to preserve evidence of the state of the works.

The President of the judicial court of Mulhouse recorded the abandonment of a site, setting its provisional date "at a date whose final determination is a matter for the trial judges" (our translation) (TJ Mulhouse, urgent applications, 6 May 2025, No. 25/00156). By the same order, the President authorised the project owner to have the works completed by third-party contractors at the defaulting contractor's expense, up to a stated provisional limit.

This route has its limits. The urgent applications judge at Lyon refused such an authorisation, on the ground that the claim based on Article 1222 of the Civil Code was seriously contestable "since acceptance put an end to the works contract that had given rise to it" (our translation) (TJ Lyon, urgent applications, 3 February 2026, No. 25/00161). This decision, unfavourable to the project owner, shows that an acceptance that has already taken place closes the route under Article 1222: remedial work then falls under the one-year completion warranty of Article 1792-6 of the Civil Code, which requires a formal notice given after acceptance, a condition the judge found had not been met in that case.

Urgent proceedings are therefore suited to a simple, documented abandonment, before any acceptance. Where the facts are disputed, an expert assessment ordered in urgent proceedings is often the first step.

Article 1222 of the Civil Code does not make recourse to a third party subject to the judge's prior consent. Only the demolition of work carried out in breach of the contract still requires that consent. Three conditions remain: a prior formal notice, a reasonable time and a reasonable cost.

The project owner may advance the price of the replacement contractor and then claim reimbursement. Alternatively, before the works, it may ask the court to order the defaulting contractor to advance the necessary sums. In the first case, the judge reviews afterwards whether the time and cost were reasonable, in light of the compared quotations and the urgency; in the second, the judge assesses this before ordering the advance.

On the basis of that provision, the Paris judicial court held that the abandonment "forces the claimants to call on a third-party contractor to finish the works and to bear an additional cost to complete the works" (our translation) (TJ Paris, 6th ch. 2nd sect., 3 October 2025, No. 24/05642). As the contractor was in insolvency proceedings, the court admitted the project owners' claim in the liabilities, without ordering payment.

Acting alone has a price: if the time allowed was too short or if the new quotation appears excessive, the reimbursement may be reduced. A precise formal notice and two comparable quotations limit that risk.

The extra cost is the difference between the price needed to finish the works and the part of the original price still to be paid. It is a harm that can be made good by damages (Article 1231-1 of the Civil Code), provided it is justified by quotations, invoices and a precise record of the works already carried out.

The Montpellier Court of Appeal proceeded in this way: starting from the balance of the original contract, it deducted the cost of the works carried out by third parties, the remedial work to be expected and the penalties, before setting the sum due (CA Montpellier, 3rd civil ch., 30 January 2025, No. 20/03986). The court partly overturned the judgment and ordered the defaulting contractor to pay the balance thus established, also deducting the additional project management costs linked to completion.

The calculation therefore requires a joint basis: a record of the works carried out on the day of abandonment, valued at the contract price. Without that record, the contractor can argue that the new quotation includes services that were not in its own contract.

Other losses, such as a delay in moving in, additional rent or storage costs, must be proved separately, document by document. They are not to be confused with the cost of completion.

In principle yes, for works that were carried out and are compliant. Abandonment gives rise to compensation, but it does not erase the price of what was properly done. The final account sets off the sums owed on each side.

The Court of Cassation quashed a judgment that had fully compensated the project owner while releasing the owner from paying the balance for the works carried out. It recalls that "damages awarded to a victim must make good the harm suffered, without resulting in either loss or gain for the victim" (our translation), and notes that the court had thus compensated the same harm twice (Cass. 3e civ., 14 May 2020, No. 19-16.278). This outcome, unfavourable to the project owner, calls for a rigorous account.

Conversely, the project owner must not pay for what has not been done. The Montpellier Court of Appeal deducted from the balance of the contract the works entrusted to third parties, which left a balance in the project owner's favour (CA Montpellier, 3rd civil ch., 30 January 2025, No. 20/03986).

Before withholding a payment, therefore, check the value of the works carried out and their compliance. An unjustified withholding can be presented by the contractor as the cause of the stoppage of the works.

Yes, but only in the case provided for by Article L. 242-1 of the Insurance Code: before acceptance, the contractor must have been given formal notice without result, and its contract must then have been terminated because it was not performing its obligations. The two conditions are distinct, and the insurer checks both.

The Court of Cassation specifies that "it is only when, after formal notice, the contractor fails to perform its obligations and the contract is terminated that the building-damage insurer's cover may be sought for damage of the ten-year liability kind" (our translation) (Cass. 3e civ., 13 February 2020, No. 19-12.281). The cover therefore does not extend to everything that remains to be done: it concerns damage of ten-year gravity.

The Clermont-Ferrand judicial court held that "the conditions for triggering building-damage cover before acceptance are met" (our translation) after two unsuccessful formal notices and then the contractor's liquidation (TJ Clermont-Ferrand, 15 September 2025, No. 25/02010). Conversely, on the extent of the cover, the Versailles Court of Appeal dismissed the claim of the guarantor subrogated to the project owners' rights, the insurer not being bound to cover works to bring the structure into conformity with the contractual provisions (CA Versailles, 4th ch., 7 November 2022, No. 20/01629).

Before the claim is notified, the firm therefore checks the nature of the damage, the date of termination and the policy taken out.

Not always. For building-damage insurance before acceptance, the Court of Cassation dispenses with this formality "where it proves impossible or pointless, in particular where the contractor has ceased trading" (our translation) (Cass. 3e civ., 13 February 2020, No. 19-12.281). The same judgment refers to a judicial liquidation that entails termination of the works contract. Since 15 February 2009, the opening of a liquidation no longer in itself terminates a contract in progress: the project owner may give the liquidator formal notice to take a position, the contract being terminated by operation of law if there is no answer within one month (Article L. 641-11-1 of the Commercial Code).

In the general law of contract, the Commercial Chamber likewise holds that "such a formal notice need not, however, be served where it follows from the circumstances that it would be pointless" (our translation) (Cass. com., 18 October 2023, No. 20-21.579). The judgment concerned a site where one party's conduct had made it impossible to continue the relationship.

These dispensations remain exceptions assessed case by case. In practice, a formal notice sent to the contractor's registered office, then to the representative or liquidator where one has been appointed, costs little and closes the debate. It also makes it possible to date the refusal to perform precisely.

Insolvency proceedings require an additional step: filing the claim with the creditors' representative within the time limits set by decree (Article L. 622-24 of the Commercial Code). The extra cost of completion and the other losses are declared there, if necessary on an estimate.

Two time limits are to be distinguished. The policy sets the time limit for notifying the claim, which cannot be less than five working days, and forfeiture for late notification can be relied on only if the insurer proves that the delay caused it harm (Article L. 113-2 of the Insurance Code). Next, actions arising from an insurance contract are time-barred after two years from the event that gave rise to them (Article L. 114-1 of the Insurance Code). For damage arising before acceptance, this starting point is not the same as the mere discovery of the damage.

The Court of Cassation has held that, where the contractor is put into judicial liquidation, the event that starts the time running is the opening of the insolvency proceedings entailing termination of the contract (Cass. 3e civ., 13 February 2020, No. 19-12.281). In that case, the delivery guarantor was subrogated to the project owner's rights; the court of appeal, which had declared the action time-barred, was overturned. The liquidation, opened in 2008, then entailed termination of the contract; today, Article L. 641-11-1 of the Commercial Code removes that automatic effect, and it is the date of effective termination that must be established.

Once the claim notification is received, Article L. 242-1 of the Insurance Code governs the insurer's response: sixty days to rule on the principle of cover and, if it accepts, ninety days to put forward an offer of compensation, both periods running from receipt of the notification. Failing that, the insured may incur the necessary expenses after notifying the insurer.

The safest course remains to notify the claim as soon as the contract is terminated or the insolvency proceedings are opened, together with the formal notice, the report and the list of damage.

In principle no, as long as the work has not been accepted. Ten-year liability under Article 1792 of the Civil Code and the compulsory insurance under Article L. 241-1 of the Insurance Code are tied to acceptance. Abandoning an unfinished site is first and foremost a failure to perform the contract.

The Paris Court of Appeal so held in a case unfavourable to the project owner: it refused tacit acceptance and then judicial acceptance, holding that "ten-year liability cover, in the absence of acceptance, cannot be called on" (our translation) (CA Paris, pole 4, ch. 5, 20 March 2024, No. 21/05972). It also set aside the public liability policy, which excluded the insured's poor performance of its professional obligations.

The tradesman's professional liability policy must therefore be read line by line. Depending on the cover and exclusions actually taken out, it may cover damage caused to third parties or to existing structures, and exclude the cost of redoing the insured's own work, as in the case decided in Paris.

Ask the contractor, or its liquidator, without delay for the insurance certificates in force on the date the site opened. They are what later make it possible to identify the insurer and the exact nature of the cover taken out.

It is a real risk. According to the Court of Cassation, "taking possession of the work and paying for the works give rise to a presumption of the project owner's unequivocal intention to accept it, with or without reservations" (our translation) (Cass. 3e civ., 18 April 2019, No. 18-13.734). An acceptance, even a tacit one, can change the applicable regime and close off certain routes.

The presumption can be rebutted. Before the Paris Court of Appeal, the project owner had barred the contractor from the site, disputed the quality of the works and had the uninhabitability of the dwellings recorded (CA Paris, pole 4, ch. 5, 20 March 2024, No. 21/05972). The court inferred an equivocal intention, then refused judicial acceptance: "The court cannot therefore pronounce acceptance of works that are not in a state to be accepted" (our translation) (CA Paris, pole 4, ch. 5, 20 March 2024, No. 21/05972).

Depending on the objective pursued, two strategies point in different directions. If the aim is to have a third party finish the works at the contractor's expense on the basis of Article 1222 of the Civil Code, any appearance of acceptance must be avoided, because acceptance ends the works contract; after it, only the remedial work under the one-year completion warranty remains enforceable, after a fresh formal notice. If the aim is to open the statutory guarantees, an express acceptance with detailed reservations may be considered, after checking that it can cover all of the works or, for a partial acceptance, a package or a coherent whole.

The firm examines the dates of moving in, the payments and the letters exchanged before recommending one or the other.

The single-family house construction contract includes a delivery guarantee, given by an approved institution. Under Article L. 231-6 of the Construction and Housing Code (Code de la construction et de l'habitation), if the house is not delivered on the agreed date, the guarantor calls on the builder to deliver or to carry out the works. If there is no useful response within fifteen days, the guarantor takes on its obligations itself.

The provision then requires the guarantor to designate, under its own responsibility, the person who will finish the works. Once the house has reached the watertight stage, the guarantor may propose that the project owner conclude the completion contracts directly, and then pay the contractors directly.

The guarantor bears the cost in excess of the agreed price where it is indispensable to finish the house, although an excess limited to 5% of that price may apply. The Court of Cassation has specified that "an excess may be stipulated for exceeding the agreed price, but not for a price supplement" (our translation) (Cass. 3e civ., 1 October 2020, No. 18-24.050). The same judgment, however, approves the rejection of the project owners' claim for late-delivery penalties, the stoppage of the site being justified by unpaid stage payments.

The project owner therefore informs the guarantor in writing as soon as the works stop, first checking that its own payments are up to date.

Not necessarily under the Civil Code: Article 1222 of the Civil Code allows performance by a third party after a simple formal notice, without prior termination. Ending the contract remains a strategic choice, which prevents a second contractor from working on a package of which the first remains the holder. Termination by notification under Article 1226 of the Civil Code requires a formal notice that expressly announces the termination, followed by a reasoned notification.

This termination is done at the project owner's own risk: if the contractor disputes it, the project owner will have to prove the seriousness of the non-performance, under Article 1224 of the Civil Code and the same Article 1226. A report and unanswered messages then form the basis of that proof.

For building-damage insurance before acceptance, termination is a condition of cover, not a mere precaution (Article L. 242-1 of the Insurance Code). The Clermont-Ferrand judicial court examined in turn the absence of acceptance, the formal notice and the termination before granting the claim (TJ Clermont-Ferrand, 15 September 2025, No. 25/02010).

The formal notice may announce both the termination and the use of another contractor, and then be followed, if the conditions are met, by a reasoned notification of termination, together with an invitation to a joint report on the state of the works.