Property and inheritance in blended families: what happens if you have children from another relationship

The underlying mistake: assuming the family you raised is the family that inherits

In a blended family, it’s easy to assume that whoever stood by you, or whoever helped raise your children — or whoever you helped raise — has an automatic place in your estate. Peruvian law doesn’t work that way. Article 724 of the Civil Code lists, exhaustively, who counts as a forced heir:

“Son herederos forzosos los hijos y los demás descendientes, los padres y los demás ascendientes, el cónyuge o, en su caso, el integrante sobreviviente de la unión de hecho.”

A stepchild is not on that list. Not affection, not years of living together, not having raised them since infancy changes that. The only way for a stepchild to gain the same rights as a child is adoption: article 377 says that “through adoption, the adoptee acquires the status of the adopter’s child and stops belonging to their family of origin.” Without that legal step, they remain, for inheritance purposes, a third party.

What happens to property you buy together

This is where your relationship’s legal regime decides everything.

If you’re married

By default you’re under sociedad de gananciales: most of what you buy during the marriage is presumed social property, whatever name is on the title (article 311, subsection 1). Selling or encumbering that property requires both spouses’ signatures (article 315).

If one of you dies, the sociedad de gananciales is liquidated first: social debts are paid and each spouse gets back their separate property; what’s left — the gananciales — is split by half (articles 322 and 323). The survivor’s half is theirs, and it isn’t part of the estate. The deceased’s half — together with their separate property — is part of the estate, and it’s distributed among their forced heirs: their children (from this relationship or another), their parents if they have no children, and their spouse, who also concurs with the children.

If you signed separación de patrimonios, there’s nothing to liquidate: each of you owns whatever is in your own name, and that — in full — becomes part of the estate of whoever died, to be distributed among their own forced heirs.

If you live together without marrying

If the unión de hecho meets article 326 (a couple free of any marriage impediment, together for at least two years) and is also registered at Registros Públicos or judicially recognized, Ley 30007 puts the surviving partner in the same position as a spouse: a gananciales-style property regime while alive, and forced-heir status at death, concurring with the deceased’s children. The details, and the open question about unions predating 2013, are on the unmarried partner inheritance page.

If the union is not registered or recognized, there is no special property regime and no automatic inheritance right. What you bought together is, in practice, ordinary co-ownership according to the percentage stated on the property title. If one of you dies, their share passes directly to their own forced heirs — not to the surviving partner — unless it was willed to them within their free third.

The surprising result: your children and your partner, co-owners of the same house

This is the scenario that causes the most trouble in practice. While the estate hasn’t been formally distributed, each heir is a co-owner of the estate’s property, in proportion to their share (article 844). That means if you die and your share of the house passes to your children from a previous relationship, they become co-owners of that home alongside your surviving partner, who keeps living there with the other share (their own, or their half of the gananciales).

That co-ownership doesn’t resolve itself. In practice, it forces a negotiation between your partner and your children — who may be minors, or of a very different age and relationship to your partner — over what to do with the house: keep sharing it, have one side buy out the other, or seek a partition. It’s exactly the kind of conflict a well-thought-out will, or the right regime chosen in time, can prevent.

What you can do for your partner or stepchild without touching the legítima

Not being married and not having adopted doesn’t leave you without options:

• Your freely disposable third (or half, if you only have ascendants) can go to whoever you want by will, including your partner or your stepchild. Forced heirship explains the exact fractions.
• A lifetime donation to your stepchild or your partner is not collated against what your children receive, because article 831 only collates what your forced heirs receive — and neither of them is one. The general limit in article 1629 still applies: you cannot donate more than you could leave by will.
• Formalizing the relationship — marrying, or registering the unión de hecho — is the only thing that gives your partner an automatic place as a forced heir, with the concurrence shares explained on the intestate succession page.
• Adopting is the only thing that gives a stepchild the status of a child for every legal purpose, inheritance included.

Foreigners

If you’re domiciled in Peru, these marital-regime and legítima rules apply to your estate, whatever your nationality, because article 2100 of the Civil Code governs succession by the deceased’s last domicile. It’s explained on the forced heirship page.

Before deciding how to title or split anything

Two calculators help put numbers to this scenario: the marital property split calculator estimates how a sociedad de gananciales would be divided, and the forced heirship calculator shows how much of your estate is really yours to decide — the freely disposable third or half — and how much already belongs to someone else by law.