Short answer. Yes. Article 1092 of the Civil Code imposes a mutual warranty obligation: after partition, each co-heir is reciprocally bound to warrant both the title and the quality of the property assigned to every other co-heir. This warranty is automatic — it arises from the partition itself, not from any separate agreement among you.
What the law says
After the partition has been made, the co-heirs shall be reciprocally bound to warrant the title to, and the quality of, each property adjudicated.
Civil Code, Article 1092 — Reciprocal Warranty Among Heirs. Read the full provision →
What the warranty covers
Article 1092 states that after partition, co-heirs "shall be reciprocally bound to warrant the title to, and the quality of, each property adjudicated." The warranty is twofold. Title warranty means that if a third party successfully claims ownership over a portion that was assigned to you — through a prior unregistered sale, an undisclosed mortgage foreclosure, or any other defect in the estate's title — your co-heirs are answerable to you for that eviction. Quality warranty covers hidden defects in the physical condition of what you received, comparable to the seller's warranty against hidden defects in an ordinary sale.
The warranty is mutual and automatic
Notice the word reciprocally: every co-heir both gives and receives this warranty simultaneously. You warrant your siblings' or relatives' shares just as they warrant yours. You do not need to negotiate this into a partition agreement — it attaches by law from the moment partition is completed. This means that if your share later suffers a defect in title or quality, you already have a claim against the other co-heirs, and they have a corresponding claim against you if their shares are similarly affected.
When the warranty is triggered
The warranty is not merely a promise — it is a substantive obligation that can be enforced in court. To invoke it, the co-heir whose share is affected must generally show that the defect or title problem existed at the time of partition, that it was not apparent or disclosed, and that actual prejudice resulted. If your share is encumbered by a lien that was already annotated on the title before partition, you may have had constructive notice of it, which could affect your warranty claim. Defects that arise or become apparent only after partition through events entirely unrelated to the estate's title history are a different matter.
Relationship to other co-heir warranty rules
Article 1092 is the general warranty rule. Other provisions of the Civil Code elaborate on how this obligation works in specific situations — for example, when the warranted property is an assigned credit that later proves uncollectable, or when the partition involves an immovable with an encumbrance. The general rule here is that all co-heirs stand behind the quality of what each person received. If a dispute arises over the scope of what is warranted in your specific case, the nature and extent of the defect, and when it was known, will both matter.