Maxim 1.3.3
A custom must be certain, for an uncertain custom is held as nothing.
Consuetudo debet esse certa; nam incerta pro nulla habetur.
Source: Davies 33; Black's 255; Bouvier, Max. 121; Weisman, 27c
Difficulty 2/5 — Approachable
Explanation
A custom too vague to be stated with precision cannot bind — the party asserting custom must prove its definite content and consistent application.
Where this applies
- Someone claims a custom applies but cannot precisely define what the custom is.
- A vague local practice is cited as binding law in a property dispute.
Topics
Legal domains
See also
Cite this maxim
NeCede Max. 1.3.3 — A custom must be certain, for an uncertain custom is held as nothing. — Davies 33; Black's 255; Bouvier, Max. 121; Weisman, 27c (Consuetudo debet esse certa; nam incerta pro nulla habetur.)
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