Definition
In French law, propres (also biens propres) refers to property that comes to a person through inheritance — whether by operation of law (intestate succession) or by testamentary devise — from relatives in the direct ascending line (parents, grandparents), direct descending line (children, grandchildren), or collateral line (siblings, cousins, and similar kin). The defining characteristic is origin: propres are property received from the family, not earned, purchased, or acquired through the individual's own efforts or transactions.
Propres stands in opposition to acquêts — property acquired during one's lifetime through purchase, labor, gift from a non-relative, or other means outside inheritance. The distinction carries significant legal consequences under French and French-derived civil law systems, particularly regarding matrimonial property regimes and the rights of heirs.
The nearest equivalent in common law terminology is property acquired by descent, as opposed to property acquired by purchase — a distinction that, in the common law tradition, historically affected how property passed at death and what rights a surviving spouse or creditors might assert against it.
Common Confusion
Propres is frequently encountered alongside acquêts in discussions of French matrimonial property law, and researchers sometimes misread the two as a simple separate/community property split. The distinction is more precise: the propres/acquêts divide is specifically about the origin of property (inherited versus self-acquired), which is a different axis than the separate/community divide (pre-marital versus marital). In many French-derived systems, propres remain outside the community of acquêts precisely because their family origin triggers protective rules — but propres can exist both before and after marriage, and the interaction with community property rules requires care. Conflating origin-based classification with timing-based classification leads to research errors in historical French, Louisianan, and Quebec property law sources.
Why It Matters in Research
Researchers working in Louisiana property law, Quebec civil law, or historical French law will encounter propres as a load-bearing concept. Louisiana's civil law heritage makes the propres/acquêts distinction relevant to older succession and matrimonial regimes cases, even where modern Louisiana law has modified or replaced the original French framework. Researchers should be aware that nineteenth-century Louisiana court opinions and treatises may use propres and acquêts without definition, assuming reader familiarity with the French civil law tradition.
In historical French law sources, the term appears in the context of coutumes — the regional customary laws of pre-revolutionary France — where the rules governing propres varied significantly by province. Brittany, Normandy, and Paris each maintained distinct rules on what qualified as propres and what rights family members held over them (retrait lignager, for example, was a right triggered specifically by the propres classification). A researcher pulling from a French coutume must identify which coutume applies before drawing conclusions about how propres operated.
The Conflict of Laws dimension is also significant. When nineteenth-century courts faced inheritance disputes involving property in one jurisdiction and heirs in another, the propres/acquêts distinction was often determinative of which law governed. Burge's Commentaries on Colonial and Foreign Laws (cited by Bouvier) addressed exactly these conflict-of-laws scenarios, making it a key secondary source for researchers tracing how Anglo-American courts engaged with French inheritance categories.
Finally, note that the common law translation — descent versus purchase — is useful as an orientation but imperfect. The descent/purchase distinction in English common law carried its own specific doctrinal consequences (including for the canons of descent and the heir-at-law rules) that do not map precisely onto French propres doctrine. Researchers should use the translation as a starting point, not a terminus.
Historical Dictionary Support
Black's Law Dictionary (1st and 2nd editions) and Bouvier's are in agreement on the core definition: propres denotes inherited property — from direct or collateral relatives, by law or by devise — as opposed to acquêts. Both editions of Black's explicitly anchor the term to the common law descent/purchase distinction, which is a useful but shorthand translation. Bouvier adds the citation to Pothier's Des Propres, which is the primary doctrinal authority on the subject within the French civil law tradition and the natural starting point for any deep research into propres doctrine. Bouvier also cites Burge's Commentaries on Colonial and Foreign Laws for the conflict-of-laws application.
Neither Black's edition engages with the coutumier variations that make propres a more complex concept in historical French practice — both treat it as a unitary French law concept when it was in reality a concept whose application varied by region before the Napoleonic Code rationalized French property law. Researchers relying solely on the dictionary entries without consulting Pothier or the relevant coutume risk oversimplification.
Jurisdictional Note
The propres/acquêts distinction was operative in French law prior to the Napoleonic Code and remains relevant in jurisdictions with French civil law heritage, including Louisiana and Quebec. Modern Louisiana law has substantially reformed its matrimonial regimes, but the historical framework surfaces in older succession disputes and title chain research. Quebec's Civil Code preserves concepts analytically related to propres, though under different terminology.