Short answer. The usufruct follows the specific portion allotted to the co-owner on partition. Article 582 of the Civil Code provides that when co-ownership ends through division, the usufruct of the part assigned to the co-owner belongs to the usufructuary — it transfers from the abstract share to the concrete portion.
What the law says
Should the co-ownership cease by reason of the division of the thing held in common, the usufruct of the part allotted to the co-owner shall belong to the usufructuary.
Civil Code, Article 582 — Usufruct of an Undivided Share. Read the full provision →
Usufruct on an undivided co-owner share before partition
Article 582 of the Civil Code addresses two distinct phases. The first is while co-ownership continues. When a usufruct covers part of a thing held in common, the usufructuary has the right to exercise all the rights of the co-owner with respect to administration and the collection of fruits or interest. This gives the usufructuary active standing in the co-owned property — they are not a passive bystander but someone who steps into the co-owner's shoes for purposes of enjoying and managing the common property.
What happens when the co-ownership is partitioned
The second phase is after partition. When the co-owners divide the property and each receives a specific portion, the usufruct does not disappear — it follows the part allotted to the co-owner. The abstract, undivided share the usufruct originally covered becomes a concrete, identified piece of property. The usufruct now attaches to that piece. The usufructuary retains their right to enjoy the fruits of whatever portion the co-owner received in the partition, for the remainder of the usufruct term.
Why this rule protects the usufructuary
Without this rule, a co-owner whose share was encumbered by a usufruct could simply agree to a partition and effectively destroy the usufructuary's right — by having the shared property divided and their portion merged with or replaced by a different asset. Article 582 prevents this by ensuring the usufruct follows wherever the co-owner's share lands. Partition re-shapes the right's subject matter but does not eliminate it. The usufructuary's position survives the dissolution of the co-ownership.
Practical implications for co-owners and usufructuaries
If you are a co-owner whose share is subject to a usufruct and you are negotiating a partition with the other co-owners, understand that the usufruct will encumber whatever portion you receive. The usufructuary does not need to consent to the partition — the partition proceeds independently — but they will automatically be entitled to the fruits of the allotted portion for as long as their usufruct runs. If you are the usufructuary, your right is protected through the transition, but it is now tied to a specific piece of property rather than an undivided percentage. A lawyer can explain how the change in form affects your practical enjoyment.