Parental authority (patria potestad) in Spain in 2026: CC Articles 154 to 170 and how it governs property transactions involving minors

Foreign property owners in Spain who hold title in a minor child’s name, or who plan to, need to understand patria potestad. It is the legal authority that parents hold over their unemancipated children, and it controls who can sign, who must consent, and when a court order is required before any property registered to a minor can be sold, mortgaged or leased. The framework sits in Articles 154 to 170 of the Spanish Civil Code (Codigo Civil), reformed in its modern shape by Ley 11/1981 and adjusted by Ley 26/2015 for child protection. The single most important rule for property: Article 166, which bars parents from selling or encumbering a minor’s real estate without prior judicial authorisation.

What is patria potestad and who holds it?

Patria potestad is the bundle of duties and powers that parents hold over their unemancipated children. Article 154 of the Codigo Civil defines it: unemancipated children are under the authority of both parents, and patria potestad must always be exercised in the child’s best interest. It comprises two core functions: caring for, housing, feeding and educating the child, and representing the child legally and administering the child’s assets. Children with sufficient judgement must be heard before any decision affecting them.

The framework was reshaped by Ley 11/1981, which replaced the older paternal-only model with equal parental authority. Article 154 now refers to “el padre y la madre” jointly, and every subsequent article treats both parents as equal holders. This matters for property transactions because both parents must normally act together, and the absence of one creates procedural questions that the code addresses in Article 156.

Patria potestad ends in three cases under Article 169: the death or declared death of parent or child, the child’s emancipation (which can occur by marriage from age 16 or by judicial declaration from age 16 with parental consent), and adoption. It does not end automatically on the child’s 18th birthday if the child has been placed under a support measure under the Ley 8/2021 framework, though the old automatic extension mechanism (Article 171) has been suppressed.

How is patria potestad exercised when parents live together?

Article 156 sets the default rule: patria potestad is exercised jointly by both parents, or by one alone with the express or tacit consent of the other. Acts performed by one parent in line with social custom or in urgent necessity are valid. Where the parents disagree, either one can ask a judge to decide. The judge, after hearing both parents and the child (if the child has sufficient judgement, and in any case if over 12), attributes the decision to one parent. If disagreements are repeated or seriously obstruct the exercise of patria potestad, the judge can assign it wholly or partly to one parent for a fixed period not exceeding two years.

The practical consequence for property: a notary executing a deed over a minor’s assets will need to verify that both parents consent, or that one parent is acting with the other’s authorisation. The presumption of good faith in Article 156 protects third-party buyers who deal with one parent in the ordinary course, but it does not override the judicial authorisation requirement of Article 166 for disposition acts.

What happens to patria potestad on separation or divorce?

Separation or divorce does not extinguish patria potestad. Article 156, paragraph 5, provides that where parents live apart, patria potestad is exercised by the parent with whom the child lives. However, the other parent can ask the court, in the child’s interest, to attribute patria potestad jointly or to distribute its functions between both. Article 159 adds that where separated parents cannot agree on which parent the child lives with, the judge decides, always in the child’s interest, hearing the child if they have sufficient judgement and in any case if over 12.

Article 160 preserves the non-resident parent’s right to maintain a relationship with the child, and Article 161 allows the court to regulate or suspend contact for a child in foster care. The key point for property owners: a divorced parent who does not live with the child retains patria potestad in principle and must still consent to acts of extraordinary administration, but the day-to-day exercise sits with the custodial parent. A buyer dealing with a minor’s property in a divorce scenario should confirm which parent holds the exercise of patria potestad and whether the court order allocating custody restricts disposition powers.

When can parents dispose of a minor’s property?

This is the central question for property transactions. Article 166 is the controlling provision. Parents cannot renounce rights held by the child, nor alienate or encumber the child’s real estate (bienes inmuebles), commercial or industrial establishments, precious objects or securities, except the right of preferential subscription of shares, unless there is justified cause of utility or necessity and prior authorisation from the court of the family domicile, after hearing the Public Prosecutor (Ministerio Fiscal).

Act type	Article	Court authorisation needed?
Sell or mortgage the minor’s real estate	166.1	Yes, always (utility or necessity)
Sell the minor’s securities	166.1	Yes, unless reinvested in safe assets (166.3)
Repudiate an inheritance left to the minor	166.2	Yes, always; if denied, only beneficio de inventario
Lease the minor’s property for over 6 years	1548 + 166	Yes, exceeds ordinary administration
Short-term lease (under 6 years)	164	No, ordinary administration
Pay taxes, maintain, insure the property	164	No, ordinary administration
Minor aged 16+ consents in a public deed	166.3	No, for that specific act

The table shows the split between ordinary administration (Article 164), which parents handle without court involvement, and acts of disposition or extraordinary administration (Article 166 and the cross-referenced Article 1548 on lease limits), which require judicial authorisation. Article 1548 of the Codigo Civil caps parental leases at six years: parents or tutors cannot lease a minor’s property for a term exceeding six years without exceeding ordinary administration, which triggers the Article 166 court-authorisation requirement.

The procedure for obtaining judicial authorisation follows the Ley 15/2015 de Jurisdicción Voluntaria framework. Parents file a request with the court of the family domicile, explaining the utility or necessity of the transaction. The court hears the Public Prosecutor and, where appropriate, the minor if they have sufficient judgement. The court grants or denies the authorisation by reasoned order. The order is then presented to the notary, who incorporates it into the escritura de compraventa or mortgage deed. Without this order, a notary will refuse to execute any disposition over a minor’s registered property.

What are the parent’s duties as administrator of the child’s assets?

Article 164 requires parents to administer the child’s assets with the same diligence as their own, subject to the general duties of any administrator and the special duties under the Mortgage Registration Act (Ley Hipotecaria). Three categories of assets are excluded from parental administration: property given by a donor who explicitly ordered different administration, property inherited where the parents were justly disinherited or declared unworthy, and assets acquired by a child over 16 through their own work (where the child handles ordinary administration and needs parental consent only for acts exceeding it).

Article 165 confirms that the fruits and income of a minor’s assets belong to the minor. Parents may allocate the child’s share of family maintenance costs from those fruits, and they are not required to account for what they spend on family upkeep. But for assets they do not administer, the fruits must be handed over to the parents in proportion to family needs, with exceptions for assets specifically earmarked for the child’s education.

Article 167 gives the court a safety valve: if parental administration endangers the child’s patrimony, the court, at the request of the child, the Public Prosecutor or any relative, can take protective measures, require a bond, or appoint a separate administrator. Article 168 grants the child, on the end of patria potestad, a three-year right to demand an account of the parental administration, with liability for loss or damage caused by fraud or gross negligence.

How does the worked example play out in practice?

Consider a British couple who bought a Marbella apartment in their 14-year-old child’s name, a common structure for estate planning among non-resident owners. Five years later, the family wants to sell the property to fund the child’s university education.

The parents must first establish that they hold patria potestad and exercise it jointly. If they are married and living together, Article 156 applies: both act together, or one with the other’s consent. If they are divorced and the child lives with one parent in Spain, Article 156 paragraph 5 means the custodial parent exercises patria potestad, but the non-resident parent retains it in principle and must consent to the sale unless a court has removed it.

They then file for judicial authorisation under Article 166. The request explains the utility: the sale proceeds will fund the child’s education, a purpose that directly benefits the minor. The court hears the Public Prosecutor and, if satisfied, issues the authorisation. The notary then executes the escritura de compraventa, incorporating the court order. The sale proceeds are placed at the child’s disposal, typically in a blocked account or reinvested in assets that serve the child’s interest, because Article 166 requires the disposition to be justified by utility or necessity to the minor, not the parents.

If one parent refuses to cooperate, the other can ask the court under Article 156 to attribute the decision. If the parents are divorced and the non-custodial parent cannot be located, the court can appoint a defensor judicial for the child under Article 163, where there is a conflict of interest or one parent is absent.

What happened to Article 171 after Ley 8/2021?

Article 171, which automatically extended patria potestad beyond the child’s 18th birthday when the child had been declared incapacitated, was suppressed by Ley 8/2021 with effect from 3 September 2021. The reform replaced the old incapacitation system with a support-based model aligned to the UN Convention on the Rights of Persons with Disabilities. Under the new framework, an adult who needs support in exercising their legal capacity receives a medida de apoyo (support measure), which can range from informal assistance to a curatela, but the automatic extension of patria potestad no longer applies.

Parents who held patria potestad prorrogada before the reform continue to exercise it under the transitional provisions of Ley 8/2021 until a court reviews the situation. But no new patria potestad prorrogada can be constituted. For property owners with adult children who require support, the relevant framework is now the curatela or other support measures under the reformed CC Articles 215 onwards, not patria potestad. Our guide to guardianship (tutela y curatela) covers this post-2021 framework in detail.

How does patria potestad interact with inheritance and succession?

When a minor inherits property, the parents as holders of patria potestad represent the child in accepting the inheritance. But Article 166 paragraph 2 requires judicial authorisation to repudiate an inheritance left to a minor, and if the court denies, the inheritance can only be accepted beneficio de inventario (with benefit of inventory), which protects the minor from inheriting debts. This connects to the broader inheritance framework: a Spanish will can name a tutor for minor children, and the forced-heirs regime determines what a minor inherits by operation of law. The partition of inheritance process also requires judicial supervision when a minor is involved, because the partition cannot prejudice the minor’s legitimate share.

For non-resident families, the inheritance planning guide and the non-resident inheritance process explain the cross-border dimensions, including the EU Succession Regulation and the Andalusia 99 per cent bonificacion. Property held in a minor’s name sits at the intersection of these rules, and the Article 166 judicial authorisation is the procedural gate that ensures any disposition serves the child’s interest.

How does patria potestad differ from a power of attorney?

A parent holding patria potestad already has legal representation of the minor under Article 162, so no separate power of attorney is needed for acts within that scope. A power of attorney (poder notarial) becomes relevant where a parent needs to delegate specific acts to a third party, such as a gestor or abogado, or where one parent authorises the other to act alone. But a power of attorney cannot bypass Article 166: no mandate can authorise an agent to dispose of a minor’s property without the prior judicial authorisation. The notary will still require the court order. A power of attorney also cannot extend the scope of patria potestad beyond what the law permits, and it terminates if the parent granting it loses capacity, unlike patria potestad which continues until the conditions in Article 169 are met.

When can patria potestad be removed?

Article 170 allows a court to deprive a parent, wholly or partly, of patria potestad by reasoned judgment, grounded either in the breach of the duties inherent to patria potestad or in a criminal or matrimonial proceeding. The courts can also, in the child’s interest, restore patria potestad when the cause that led to its deprivation has ceased. Article 158 gives the judge broad protective powers: at the request of the child, any relative or the Public Prosecutor, the court can issue measures to secure maintenance, prevent harmful disturbances during custody transitions, prevent the removal of the child from Spain, and any other measure needed to protect the child from danger. These measures can be issued within any civil or criminal proceeding or in a voluntary jurisdiction procedure.

For property owners, a deprivation of patria potestad under Article 170 means the affected parent can no longer represent the minor or administer the minor’s assets. If both parents are deprived, a tutor is appointed under the tutela framework. If only one is deprived, the other exercises patria potestad alone. A buyer dealing with a minor’s property where one parent has been deprived should verify the court order and confirm the remaining parent’s scope of authority with the notary.