Short answer. Yes. When the only surviving siblings are all of the half-blood — some on the father's side and some on the mother's — Article 1007 of the Civil Code directs them to inherit in equal shares without any distinction as to the origin of the property.
What the law says
In case brothers and sisters of the half blood, some on the father's and some on the mother's side, are the only survivors, all shall inherit in equal shares without distinction as to the origin of the property.
Civil Code, Article 1007 — Half-Blood Siblings Only. Read the full provision →
Half-blood siblings only: the equal-share rule
Article 1007 applies to a specific scenario: the only siblings inheriting are all of the half-blood, meaning they share only one parent with the deceased rather than both. Normally, when half-blood and full-blood siblings inherit together, the half-blood siblings receive half the share of full-blood siblings. But when no full-blood sibling exists, that comparison becomes irrelevant. Article 1007 resolves the situation cleanly — all surviving half-blood siblings, regardless of which side they come from, inherit in equal shares.
No distinction as to the origin of property
One of the more significant aspects of Article 1007 is the clause 'without distinction as to the origin of the property.' In some inheritance scenarios, the source of property — whether it came from the father's side or the mother's side of the family — can affect who gets it. Article 1007 eliminates that consideration entirely when all surviving siblings are half-blood. A half-sibling from the father's side has the same claim to property that came from the mother's side as any other half-sibling. The estate is divided equally without tracing lineage of assets.
Why the normal half-blood discount does not apply here
When full-blood siblings and half-blood siblings inherit together, Civil Code rules give full-blood siblings a double share compared to half-blood siblings. This differential reflects the closer kinship of a sibling who shares both parents. But Article 1007 recognizes that this differential is only meaningful in comparison. When all the siblings are equally half-blood — when there is no full-blood sibling to compare against — applying any kind of reduction to some half-blood siblings and not others would be arbitrary. So the law abandons the distinction entirely and treats everyone the same.
Practical effect on estate distribution
If you are one of several half-blood siblings inheriting from a deceased brother or sister who left no spouse, children, or parents, Article 1007 means the estate is divided into as many equal parts as there are surviving siblings. Your paternal half-brothers receive the same fraction as your maternal half-sisters. There is no calculation based on which parent you shared with the deceased. For purposes of settlement, this is actually the simplest sibling-inheritance scenario: count the heirs, divide equally, and the law is satisfied.