Latent defects: macerator not disclosed in the preliminary sale agreement

Buying a property is often the largest investment of a lifetime. Where a buyer discovers after the sale that a macerator toilet (sanibroyeur) was installed without being mentioned in the preliminary sale agreement (compromis de vente), the question arises whether this omission amounts to a latent defect (vice caché) giving rise to a remedy. This issue of a macerator not mentioned in the preliminary sale agreement raises complex legal questions between the seller's duty of disclosure and the buyer's rights.

Macerator and preliminary sale agreement: legal characterisation of the latent defect

Nature and function of the macerator in the sanitary installation

A macerator is a specific piece of sanitary equipment that allows waste water to be removed. It is used where a traditional gravity connection proves impossible or complex. Its installation substantially alters the original drainage system of the dwelling. It may affect the value of the property.

This technical alteration has particular characteristics. It differs from conventional sanitary equipment. It requires specific maintenance and generates additional running costs. It may involve constraints of use that the buyer should know about before deciding to buy.

The seller's duty of disclosure in the preliminary sale agreement

The seller of a property bears a legal duty of disclosure towards the buyer. This duty extends to the essential characteristics of the property. It covers matters liable to influence the buyer's consent or the value of the property.

Failure to mention the presence of a macerator in the preliminary sale agreement may constitute a breach of this duty of disclosure. Whether this information is decisive depends on the circumstances of each case. It varies according to the real impact of the installation on the use of the property.

Latent defect and macerator: conditions for existence and remedies

The cumulative criteria for a latent defect

Recognition of a latent defect requires the conditions strictly defined by the case law to be met. The defect must predate the sale. It must have been hidden at the time of purchase. It must be serious enough to make the property unfit for its intended use or substantially reduce that use.

As regards a latent defect involving a macerator, the legal analysis must examine whether its installation actually constitutes a defect in the legal sense. The mere presence of this equipment is not necessarily enough to establish a latent defect. Its operation must remain compliant with technical standards.

Prior existence and hidden nature of the defect

The macerator must have been installed before the deed of sale was signed. This condition is generally met where the equipment existed at the time of the preliminary sale agreement without having been declared.

Whether a defect is hidden is assessed objectively. It is measured against the possibilities of discovery by a reasonably diligent buyer during viewings. A macerator concealed in a boxing-in may satisfy this condition. Visible and functioning equipment generally does not.

The seriousness of the defect and its impact on use

Assessing the seriousness of the defect is the decisive element of the legal characterisation. The judge must assess whether the undeclared presence of the macerator makes the property unfit for its purpose. The judge assesses whether it substantially reduces its normal use.

This assessment varies according to the concrete circumstances of each case. A faulty macerator, or one causing significant nuisance, may more readily be characterised as a latent defect. Functioning and well-maintained equipment will hardly be characterised in this way.

Case-law analysis: macerator and latent defect claims

Recent trends in the case law

French case law takes a nuanced approach to characterising undeclared sanitary equipment as a latent defect. The courts examine case by case the real impact of the omission on the buyer's rights. They assess the effect on the value of the property.

Some decisions have recognised a latent defect where the macerator suffered recurring malfunctions. Others have admitted it where the equipment generated disproportionate maintenance costs not anticipated by the buyer. Conversely, other decisions have rejected this characterisation for functioning equipment.

The assessment criteria applied by the courts

The courts apply several assessment criteria to characterise the situation legally. The working condition of the equipment is a central element. Its impact on the market value of the property is also examined. The maintenance costs generated and the existence of nuisance are further matters of assessment.

The case law also examines the circumstances of the discovery and the conduct of the parties to the contract. A seller who deliberately concealed the existence of the installation may more readily be held liable. Unintentional omission benefits from a more lenient approach.

Remedies where a macerator is not mentioned in the preliminary sale agreement: available actions

The action under the warranty against latent defects

Where the conditions for a latent defect are met, the buyer has a remedy based on the statutory warranty provided for by the French Civil Code. This action makes it possible to obtain either rescission of the sale with return of the price. It may also result in a proportionate reduction of the sale price.

The choice between these two options belongs to the buyer: Article 1644 of the French Civil Code allows the buyer to return the thing and have the price refunded, or to keep the thing and have part of the price returned.

Time limits for action and how they are calculated

An action arising from redhibitory defects (vices rédhibitoires) must be brought by the buyer within two years of discovery of the defect (Article 1648, first paragraph, of the French Civil Code). This is not a "reasonable period" left to the judge's assessment, but a statutory period whose starting point is the discovery of the defect.

This two-year period is a limitation period, capable of suspension under Article 2239 of the French Civil Code, in particular during an investigative measure ordered in summary proceedings (référé) (Cour de cassation, mixed chamber, 21 July 2023, No. 21-15.809, published in the Bulletin). The regime of the time limit for action and its starting point is discussed in our analysis of Articles 1641 to 1649 of the Civil Code.

The action for annulment for fraud

Alongside the action under the warranty, the buyer may consider an action for annulment of the sale contract for fraud (dol). This action applies if the seller deliberately concealed the existence of the macerator. It requires proof of the seller's fraudulent intent.

Fraud is characterised by unfair manoeuvres, lies or wrongful non-disclosure. These elements must have determined the buyer's consent. Mere omission is not necessarily enough, unless it concerns an element decisive to consent. The distinction between the warranty against latent defects and fraudulent non-disclosure is developed in our article on neighbourhood disturbances not disclosed by the seller.

The seller's defences to a macerator claim

The absence of a decisive character in the information

The seller may dispute the decisive character of the omission. The seller may show that knowledge of the existence of the macerator would not have altered the decision to buy. This showing often proves difficult in practice.

The argument may rest on the functional nature of the equipment. It may emphasise its harmonious integration into the sanitary installation. The absence of any impact on the market value of the property may also be relied on.

The buyer's actual or presumed knowledge

The defence may also rest on the buyer's actual or presumed knowledge at the time of purchase. If the equipment was visible, or if the buyer had been informed by other means, the latent defect action may be dismissed.

This showing requires precise evidence. Witness statements, documents and photographs are all items that may establish that the buyer could not have been unaware of the existence of the installation.

Prevention: avoiding a dispute over a macerator in the preliminary sale agreement

The seller's disclosure obligations

To avoid any later challenge, the seller must systematically declare the existence of a macerator in the contractual documents. This mention may appear in the property advertisement. It must appear in the preliminary sale agreement or the final deed.

The declaration must be precise and complete. It must state the technical characteristics of the installation and its working condition. Any constraints of use or maintenance must be specified.

Checks recommended for the buyer

A prudent buyer should carry out thorough checks during viewings. Particular attention should be paid to sanitary installations. Examining drainage, electrical connections and any boxing-in may reveal the presence of specific equipment.

Using a technical expert before final signature is a recommended precaution for significant purchases. This expert assessment may identify undeclared equipment and assess its impact on the value of the property.

Technical expert assessment and valuation of the loss

The role of the court-appointed expert

Where a dispute arises concerning a macerator not mentioned in the preliminary sale agreement, the appointment of a court-appointed expert often proves necessary. This expert assesses the condition of the installation and its impact on the use of the property. The expert determines the loss suffered by the buyer.

The technical expert assessment makes it possible to establish objectively the factual elements essential to the legal characterisation of the latent defect. It establishes in particular whether the installation complies with technical standards. It determines whether its operation generates particular constraints.

Financial valuation of the loss

The expert also carries out a financial valuation of the loss. The expert compares the value of the property with and without the disputed installation. This valuation takes account of the costs of reinstatement and of additional maintenance costs. It includes the impact on market value.

This financial valuation is the basis for calculating compensation where a latent defect is recognised. It may justify either a proportionate reduction in price or compensatory damages.

The issue of a macerator not mentioned in the preliminary sale agreement illustrates the complexity of contractual relations in property matters. The characterisation of a latent defect depends closely on the factual circumstances and on the real impact of the omission on the buyer's rights. The courts take a pragmatic approach, giving priority to concrete analysis of the loss over the mere omission to declare.

This approach encourages sellers to be maximally transparent in their declarations. It encourages buyers to be vigilant in their pre-contractual checks. The assistance of a lawyer makes it possible to assess the chances of success of a claim and to determine the most appropriate procedural strategy.