Real Estate

Inheritance with vulgar substitution: family book is no longer sufficient

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Equipo Editorial CambiosLegales
17 Jun 2026 7 min 3 views

Key data

RegulationResolution of 12 March 2026, DGSJFP — Appeal against qualification of the Property Registry of Almería no. 5
Publication17 June 2026
Entry into forceNot specified
Affected partiesHeirs, notaries and registrars in succession operations with vulgar substitution
CategoryReal Estate / Succession Law
BOE ReferenceBOE-A-2026-13185
Key provisionArt. 82 of the Mortgage Regulation
Rejected documentFamily book of the renouncer's marriage
Required documentNotarial deed of notoriety (or will of the substituted person that nominally identifies their descendants)
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If you are managing an inheritance in which one of the heirs renounces and their children inherit in their place, be prepared: the family book of the renouncer's marriage does not guarantee that those children are the only descendants. This has been confirmed by the DGSJFP in its Resolution of 12 March 2026, published in the BOE on 17 June 2026 (reference BOE-A-2026-13185).

The specific case arises from an appeal against the qualification of the Property Registry of Almería no. 5, which suspended the registration of a deed of renunciation of inheritance, liquidation of community property, and acceptance and adjudication of inheritance. The registrar rejected the family book as sufficient proof of who the substitute heirs are, and the DGSJFP agreed with him.

What does this resolution establish?

The resolution addresses a frequent problem in notarial and registry practice: when the testator institutes a child as an heir and includes a clause of vulgar substitution (that is, "if my child cannot or does not want to inherit, their descendants will inherit"), and that child renounces, those substitute descendants must be identified with certainty.

The registrar of Almería no. 5 required a notarial deed of notoriety in accordance with art. 82 of the Mortgage Regulation. The interested parties provided the family book of the renouncer's marriage, arguing that it proved who their children were. The DGSJFP rejected this argument for a very specific reason:

  • The family book only records the common children of the marriage registered in that book.
  • It does not record extramarital children or children from other previous or subsequent unions of the renouncer.
  • Therefore, it does not guarantee that the children appearing are the only descendants of the renouncer.

The resolution admits, however, an alternative to the deed of notoriety: the will of the substituted person themselves (that is, of the renouncer), provided that it nominally identifies their descendants. If that will exists and expressly names the children, it can serve to prove who the substitutes are.

DocumentValid to prove substitutes?Reason
Family book of the renouncer's marriageNot validOnly records common children of the marriage; does not prove absence of other descendants
Notarial deed of notoriety (art. 82 MR)ValidSpecific document to prove heirs with registry guarantees
Will of the substituted person that nominally identifies their descendantsValid as alternativeAllows identification of substitutes if expressly named

Economic and operational impact

The main practical consequence is an additional cost and delay in the registration process of inheritances with vulgar substitution. Processing a notarial deed of notoriety involves:

  • Notarial fees for processing the deed.
  • Additional processing time before being able to register in the Property Registry.
  • Risk that registration will be suspended—as happened in the Almería case—if the correct document is not provided from the start.

Operationally, this requires reviewing the protocol of any inheritance deed that includes vulgar substitution and renunciation by some instituted heir. Notaries and advisors must anticipate this requirement before executing the deed, not after receiving the registrar's negative qualification.

The impact is especially relevant in inheritances with real estate, where registry registration is essential to transfer, mortgage or sell the adjudicated assets.

Who does it affect?

  • Heirs and families managing an inheritance in which one of the instituted heirs renounces and there are vulgar substitution clauses in the will.
  • Notaries who authorize deeds of acceptance and adjudication of inheritance with renunciation by some heir: they must require the deed of notoriety or the will of the substituted person before executing the deed.
  • Property Registrars, who are supported by this resolution to suspend registrations when sufficient documentation about the substitutes is not provided.
  • Lawyers and legal advisors who advise in succession processes with real estate.
  • Management firms and property administrators who coordinate inheritance operations with subsequent transfer or mortgage of real estate.

Practical example

A testator dies leaving two children instituted as heirs and a vulgar substitution clause: "if any of my children does not want or cannot inherit, their descendants will substitute them". The eldest son renounces the inheritance. His two children (grandchildren of the testator) inherit in his place as vulgar substitutes.

The family presents to the notary the family book of the renouncing son's marriage, where those two grandchildren are recorded. The notary executes the deed. The Property Registry suspends registration: the family book only proves the common children of that marriage, but does not rule out that the renouncer has other children from a previous or extramarital relationship.

To unblock registration, the family must process a notarial deed of notoriety before a notary, in which it is proven that the two grandchildren are the only descendants of the renouncer. Alternatively, if the renouncing son himself has a will in which he expressly names his children, that will can serve as a valid alternative document.

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What should affected parties do now?

  1. Review all pending inheritance deeds for registration that include vulgar substitution and renunciation by some instituted heir: if only the family book was provided, the Registry will likely suspend them or may have already done so.
  2. Process the notarial deed of notoriety in accordance with art. 82 of the Mortgage Regulation before presenting the deed in the Registry, not after receiving the negative qualification.
  3. Verify if the renouncer has their own will in which they nominally identify their descendants: if it exists, it can be used as a valid alternative to the deed of notoriety.
  4. Notaries: incorporate as a protocol requirement the request for the deed of notoriety or the will of the substituted person in any inheritance deed with vulgar substitution and renunciation.
  5. Lawyers and advisors: inform clients of this requirement from the beginning of the succession process to avoid delays and additional costs from negative Registry qualifications.
  6. In case of negative qualification already received: do not appeal without first providing the correct document; this resolution confirms that the registrar's criterion is in accordance with law.

Frequently asked questions

Why is the family book not sufficient to prove substitute heirs?

Because the family book only records the common children of the marriage registered in that book. It does not include extramarital children or children from other unions of the renouncer. Therefore, it does not guarantee that the children appearing in it are the only descendants of the heir who renounces, which is precisely what the Registry needs to verify to register the inheritance.

What is the notarial deed of notoriety and how is it processed in inheritances with vulgar substitution?

It is a notarial document regulated in art. 82 of the Mortgage Regulation by means of which a notary proves, after appropriate checks, who are the descendants of the renouncing heir. It is the document that the DGSJFP considers sufficient for the Property Registry to be able to register the adjudication of inheritance when vulgar substitutes come into play. It is processed before a notary before presenting the deed in the Registry.

Is there any alternative to the notarial deed of notoriety to prove substitute heirs?

Yes. The DGSJFP resolution admits as an alternative the will of the renouncing heir themselves (the "substituted"), provided that said will nominally identifies their descendants. If that will exists and expressly names the children, it can be used instead of the deed of notoriety to prove who the vulgar substitutes are.

What happens if I submit the inheritance deed to the Registry without the notarial deed?

The Property Registry can suspend registration, as happened in the Almería no. 5 case that gave rise to this resolution. The DGSJFP has confirmed that this suspension is in accordance with law, so appealing without providing the correct document will not succeed. The practical consequence is a delay in registration and additional costs for having to process the deed of notoriety afterwards.

Does this resolution only affect real estate in Almería or does it have general scope?

Although the specific case arises from the Property Registry of Almería no. 5, DGSJFP resolutions have general interpretive value for all registrars in Spain. Any Property Registry can apply this criterion when qualifying inheritance deeds with vulgar substitution and renunciation by an instituted heir.

Official source

Consult complete regulation in official source (BOE-A-2026-13185)

Notice: This article is for informational purposes only and does not constitute legal advice. For specific decisions, consult a qualified professional. Source: https://www.boe.es/diario_boe/txt.php?id=BOE-A-2026-13185



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