Property Boundary and Neighbour Disputes in France: A Legal Guide for Foreign Owners

For a foreign buyer acquiring property in France, the charm of a stone farmhouse in the Dordogne or a village house in Provence can quickly fade when a neighbour asserts that your hedge encroaches on their land, or that your newly built terrace violates a servitude de passage (right of way). French property boundary law, rooted in the Code civil of 1804, is both precise and, at times, counterintuitive for those accustomed to common-law systems. This article provides a structured overview of the legal framework governing property boundaries and neighbour disputes in France, drawing exclusively on recent rulings of the Cour de cassation (Third Civil Chamber) and the applicable provisions of the Code civil.

I. The Legal Framework for Property Boundaries in France

A. The Right to Bornage: Compelling a Boundary Determination

Under French law, the definitive act by which the dividing line between two contiguous properties is established is the bornage (boundary determination). Article 646 of the Code civil provides a deceptively simple rule: «Tout propriétaire peut obliger son voisin au bornage de leurs propriétés contiguës. Le bornage se fait à frais communs.» (“Every owner may compel his neighbour to determine the boundary between their contiguous properties. The bornage is carried out at shared expense.”)

The right to demand a bornage is imprescriptible: it can be exercised at any time, regardless of how long the properties have coexisted without a formal boundary. This is a fundamental guarantee for foreign owners who may have inherited or purchased property described by outdated plans cadastraux (cadastral maps), which are tax documents and do not constitute proof of ownership boundaries.

A bornage may be carried out amicably or judicially. The amicable procedure involves the appointment of a géomètre-expert (licensed surveyor) by both parties, who then sign a procès-verbal de bornage (boundary report) that is registered with the local land registry. If one neighbour refuses to participate, the other may petition the tribunal judiciaire for a bornage judiciaire (court-ordered boundary determination). The court will appoint an expert surveyor whose findings, once ratified by the judge, become binding.

However, once a valid bornage has been performed, a new action for the same purpose is inadmissible unless the boundary line has since become uncertain. The Cour de cassation confirmed this principle in a decision of 28 March 2024 (no. 22-16.473, Bull.), holding that “le bornage rend irrecevable toute nouvelle action tendant aux mêmes fins, sauf à ce que la limite séparative, du fait de la disparition de tout ou partie des bornes, soit devenue incertaine” (“a bornage renders any subsequent action for the same purpose inadmissible, unless the dividing line has become uncertain due to the disappearance of all or part of the boundary markers”). In that case, the court found that even though the physical boundary stones had disappeared, the previous owners themselves had consecrated the boundary line by erecting a fence along it, so the boundary was not uncertain and the new action was inadmissible.

B. The Limited Legal Effect of Boundary Agreements

A critical distinction, often misunderstood by foreign purchasers, is that a bornage determines the dividing line between two properties but does not, in itself, transfer ownership of land. The Cour de cassation reaffirmed this principle in Cass. 3e civ., 23 January 2025, no. 23-18.821: “un procès-verbal de bornage, qui ne constitue pas un acte translatif de propriété, ne permet pas à lui seul d’attribuer la propriété d’une portion de terrain et d’ordonner la démolition des ouvrages qui y ont été construits” (“a procès-verbal de bornage, which does not constitute a deed transferring ownership, does not by itself allow ownership of a portion of land to be attributed, nor the demolition of structures built upon it to be ordered”). The Court quashed a decision that had ordered demolition of a wall based solely on a boundary report, holding that the lower court had violated Articles 544 and 646 of the Code civil.

This means that if a bornage reveals that your neighbour’s wall is, say, 4 cm over the boundary line—as in a widely reported case recently covered by the English-language press—the boundary report alone is not sufficient to obtain a demolition order. The claimant must additionally prove ownership of the encroached-upon land, typically through titres de propriété (title deeds) or, in some cases, through prescription acquisitive (adverse possession).

French law recognises two forms of adverse possession: prescription acquisitive abrégée (ten to twenty years, requiring a juste titre, i.e. a valid though defective deed) and prescription acquisitive trentenaire (thirty years, requiring no title). Article 2261 of the Code civil sets out the strict conditions: “Pour pouvoir prescrire, il faut une possession continue et non interrompue, paisible, publique, non équivoque, et à titre de propriétaire” (“To be able to prescribe, possession must be continuous and uninterrupted, peaceful, public, unequivocal, and in the capacity of an owner”).

The Cour de cassation has been protective of adverse possession in boundary disputes. In Cass. 3e civ., 7 September 2023, no. 21-25.779, the Court held that a boundary agreement between neighbours does not affect the conditions of adverse possession: “l’accord des parties sur la délimitation de fonds, qui n’implique pas, à lui seul, leur accord sur la propriété des parcelles litigieuses, ne suffit pas à entacher la possession invoquée d’un vice d’équivoque” (“the parties’ agreement on the boundary, which does not in itself imply their agreement on the ownership of the disputed parcels, is not sufficient to taint the alleged possession with a defect of equivocality”). In practice, this means that a landowner who has continuously used a strip of land for parking or storage for over thirty years may validly claim ownership by adverse possession even if an earlier boundary agreement had placed that strip on the neighbour’s side of the line.

Moreover, any legal action that asserts a competing claim to the disputed land interrupts the thirty-year prescription period. In Cass. 3e civ., 29 June 2023, no. 21-25.390 (Bull.), the Court ruled that an application for a court-appointed expert, filed in référé (interim proceedings) under Article 145 of the Code de procédure civile, interrupts the acquisitive prescription period. The Court stated: “Une assignation en référé-expertise, qui tend à faire établir avant tout procès la preuve d’un empiétement, est interruptive de la prescription acquisitive trentenaire” (“A summons for a court-appointed expert, which seeks to establish before any trial the proof of an encroachment, interrupts the thirty-year period for adverse possession”).

This is a crucial point for foreign buyers: if a dispute over a boundary has arisen in the past, even an expert assessment procedure initiated by the neighbour may have stopped the clock on any adverse possession claim the seller might have had, thereby preserving the neighbour’s rights.

II. Common Disputes and Legal Remedies for Foreign Owners

A. Encroachment, Easements and Rights of Way

Disputes involving empiètement (encroachment) are among the most frequent neighbour conflicts brought before French courts. An encroachment typically involves a wall, a roof overhang, foundations, or even a balcony that extends beyond the boundary line onto the neighbouring plot. French law takes encroachment seriously: Article 544 of the Code civil defines property as “le droit de jouir et disposer des choses de la manière la plus absolue” (“the right to enjoy and dispose of things in the most absolute manner”), and the courts have consistently held that an encroachment, however minor, constitutes a violation of this right capable of justifying demolition.

In Cass. 3e civ., 18 January 2023, no. 21-15.269, the Court upheld an order for removal of a parking area and retaining wall that encroached on a neighbour’s land. The trial court had relied on an expert’s examination of cadastral plans, notarial deeds, survey documents and photographs, superimposing the field survey onto the plan annexed to the title deed. The Court confirmed that such technical evidence, without needing to rely on a boundary report as a deed of transfer, was sufficient to establish the encroachment.

For foreign owners, a particularly acute concern is the servitude de passage pour cause d’enclave (right of way by reason of landlocking). Article 682 of the Code civil provides that the owner of a landlocked property who has no access, or insufficient access, to the public road is entitled to claim a right of way over a neighbour’s land, subject to payment of compensation proportionate to the damage caused. The passage must be taken on the shortest route to the public road and in the least damaging location.

The Cour de cassation recently clarified a fundamental point: a servitude is a right attached to the land, not to a person. In Cass. 3e civ., 19 June 2025, no. 24-11.456 (Bull.), the Court quashed a decision that had granted “M. [C]” a right of way, stating: “la servitude pour cause d’enclave ne pouvait être instituée que pour l’usage et l’utilité d’un fonds déterminé et non au profit d’une personne” (“a right of way for landlocking may only be established for the use and benefit of a determined parcel of land, and not for the benefit of a person”). The judgment must identify the dominant and servient tenements—a distinction that can be critical when a right of way is asserted by a tenant or a neighbouring farmer rather than by the owner of the landlocked parcel itself.

Where the landlocking results from the division of a single plot of land—for instance, when a seller retains the rear portion after selling the front portion—Article 684 of the Code civil restricts the location of the right of way: the passage may only be claimed over the parcels that formed part of the original divided plot. In Cass. 3e civ., 24 October 2024, no. 22-24.410 (Bull.), the Court extended this principle by ruling that if establishing the passage on the divided parcels would violate applicable urban planning or environmental regulations, the passage may be sited on other neighbouring parcels under the ordinary rules of Article 682. The Court held that “l’assiette de la servitude légale de passage prévue à l’article 682 du code civil doit être compatible, lorsque les fonds concernés sont situés dans une zone de protection, avec les éventuelles contraintes d’urbanisme et d’environnement applicables” (“the location of the statutory right of way under Article 682 of the Civil Code must be compatible, where the land concerned is located in a protected zone, with the applicable urban planning and environmental constraints”).

For a foreign buyer considering the purchase of a rural property with a single-track access road crossing a neighbour’s field, these rules are of immediate practical importance. If the access was granted informally for decades without a registered servitude, a change of ownership of the servient land could lead to the access being blocked. Buyers should verify, at the compromis de vente (preliminary sale agreement) stage, whether any access routes are covered by a registered servitude or, at minimum, by a documented thirty-year usage that could support a claim of prescription.

B. Trees, Hedges and Neighbour Nuisance

Trees and hedges are a perennial source of conflict between neighbours in France, and the rules are set out with characteristic precision in the Code civil. Articles 671 and 672 distinguish between plantations based on their distance from the boundary line and their height:

• Plantations exceeding two metres in height must be located at least two metres from the boundary line.
• Plantations not exceeding two metres in height must be located at least fifty centimetres from the boundary line.
• These rules may be overridden by local regulations, a thirty-year prescription, a written agreement (titre), or the destination du père de famille (a pre-existing situation predating the division of the original plot).

Article 673 further entitles a neighbour to compel the owner of a tree or hedge to cut back branches that overhang the boundary, although the neighbour may not cut them himself. By contrast, roots, brambles or twigs encroaching onto a neighbour’s land may be cut by the neighbour himself at the boundary line.

The interaction between the specific plantation rules and the broader doctrine of trouble anormal de voisinage (abnormal neighbourhood nuisance) has given rise to important jurisprudence. The trouble anormal doctrine is a judge-made remedy, independent of any statutory provision, that allows a landowner to seek damages or injunctive relief for a nuisance that exceeds the ordinary inconveniences of neighbourhood.

In Cass. 3e civ., 18 January 2023, no. 21-23.955, the Court was called upon to resolve a dispute between neighbours concerning a cypress hedge, bamboo hedges, a fig tree hedge and an oak tree. The Court drew a sharp distinction between claims founded on the statutory planting distances (Articles 671 et seq.) and claims founded on trouble anormal de voisinage. The lower court had wrongly applied the statutory framework to claims that had been pleaded on the basis of abnormal nuisance, and vice versa. The Court accordingly quashed the decision, underscoring that a judge cannot recast a party’s claim from one legal basis to another, but must rule on the basis on which the claim is actually brought.

On the substance, the Court noted that the right to demand the reduction of trees planted less than two metres from the boundary, under Article 671, is not conditional on proof of damage—a significant procedural advantage for claimants. Under the trouble anormal doctrine, by contrast, the claimant must prove that the nuisance caused by the vegetation—loss of sunlight, obstruction of views, leaf fall, root damage—exceeds the level of inconvenience that a neighbour must reasonably tolerate. The distinction is important for foreign owners: if your neighbour’s trees violate the statutory distance and height rules, you may bring a claim under Articles 671-672 without needing to prove any specific harm; if the trees comply with the statutory rules but nevertheless cause excessive nuisance, you must bring a claim under the trouble anormal doctrine and carry the burden of proving the abnormal nature of the nuisance.

Practical steps for foreign owners in vegetation disputes include: (i) having a géomètre-expert measure the exact distance from the base of each tree to the boundary; (ii) having a huissier de justice (bailiff) produce a constat (official factual report) recording the height, species, and condition of the vegetation and any visible damage; (iii) sending a formal mise en demeure (letter of formal notice) to the neighbour, by registered post with acknowledgement of receipt, before initiating legal proceedings. The procedural requirement of attempting amicable resolution (tentative de règlement amiable) is mandatory before most civil claims in France.

Foreign owners should also be aware of the rules on mitoyenneté (party ownership) of walls and fences. Under Articles 653 et seq. of the Code civil, a wall separating two properties is presumed to be mitoyen (commonly owned) up to the point where the buildings differ in height or use. The costs of maintaining and repairing a party wall are shared between both owners. Unilateral works on a party wall, including installing gas meters or other fixtures, require the consent of the co-owner. A foreign buyer who discovers that a neighbour has attached structures to, or cut openings in, a shared wall without consent may seek a court order for removal of the fixtures and restoration of the wall.

Conclusion

Property boundary disputes in France engage a dense and precise body of law, developed over two centuries of judicial interpretation of the Code civil. For foreign owners, three practical lessons emerge from the recent jurisprudence of the Cour de cassation.

First, the distinction between bornage and ownership must be clearly understood: a boundary report is a formal act establishing the dividing line, but it does not transfer ownership and cannot alone support a claim for demolition of an encroaching structure. Second, the interaction between possession and adverse possession is subtle and time-sensitive: a thirty-year possession may confer title even when a boundary report indicates a different line, but any legal challenge—including a mere application for expert assessment—interrupts the prescription clock. Third, the choice of legal basis for a vegetation or nuisance claim determines both the procedural burden and the available remedies: claims under the statutory planting distance rules require no proof of damage, while claims under the trouble anormal doctrine require evidence of excessive nuisance.

Before purchasing a property in France, a foreign buyer should: verify the existence and registration of any bornage; examine whether any boundary markers are missing or displaced; check for registered servitudes in the title deed and on the plan cadastral; inspect the condition, distance and height of boundary vegetation; and, where doubt exists, commission an independent surveyor’s report. These investigations, while they add to pre-purchase costs, are modest compared to the expense and duration of boundary litigation in the French courts—a process that can extend over several years and involve multiple levels of appeal.

For more information on related aspects of French property law, you may consult our overview of French real estate law for foreign buyers and owners.