Key data
| Regulation | Resolution of May 6, 2026, DGSJFP — appeal against qualification note of the Property Registrar of Orihuela No. 1 |
|---|---|
| Publication | August 6, 2026 |
| Entry into force | Not specified |
| Affected parties | Owners, possessors and legal advisors in disputes over adverse possession of registered properties |
| Category | Real Estate |
| Applicable regulatory framework | Organic Law 1/2025 (MASC) and consolidated property registration doctrine on acquisitive prescription |
If someone has been possessing for years a property that is registered in the name of another and reaches an agreement with that owner—even before a notary and within a MASC process regulated by the Organic Law 1/2025—, that agreement will not serve to register the property in their name. The DGSJFP resolution of May 6, 2026 closes that avenue and requires recourse to the courts.
The specific case arose in Orihuela: the Property Registrar No. 1 suspended the registration of a deed elevating to public record agreements reached within a MASC framework regarding acquisition of a property by adverse possession. The reasons were three: lack of registrable title, absence of a final court judgment, and failure to prove the chain of title. The appellant argued that the MASC agreement has executive force and that requiring a judgment violates Organic Law 1/2025. The DGSJFP did not accept this.
What does this regulation establish?
The resolution establishes and confirms the following doctrine, which was already consolidated before Organic Law 1/2025 and which this law has not modified:
- Acquisitive prescription (adverse possession) over a registered property in the name of a third party can only be registered in the Property Register through a final court judgment.
- The consent of the registered owner expressed in a public deed—even if within a MASC procedure—is not sufficient registrable title.
- The executive force that Organic Law 1/2025 recognizes for MASC agreements does not equate to the registration effectiveness required by mortgage legislation to modify the ownership of registered properties.
- In addition to the judgment, the chain of title must be proven when there are intermediate unregistered transfers.
| Requirement demanded by the Registrar | Position of the appellant | DGSJFP Decision |
|---|---|---|
| Final court judgment | The MASC agreement has equivalent executive force | Confirms: judgment is required. The MASC agreement does not substitute it |
| Registrable title | The deed elevating the agreement to public record is sufficient title | Confirms: the MASC agreement deed is not registrable title for adverse possession over registered property |
| Proof of chain of title | No specific allegation on record | Confirms: must be proven |
Economic and operational impact
The impact is twofold: procedural and economic.
- Higher cost and time: Anyone seeking to consolidate an acquisition by adverse possession over registered property will need to initiate or continue judicial proceedings, with the costs of attorney, court officer, and court fees that this entails. The MASC agreement, even if already signed and elevated to a public deed, does not avoid that process.
- Potentially wasted investment in MASC: Parties that have invested time and money in a mediation or MASC negotiation process to resolve an adverse possession dispute over registered property must accept that such agreement, by itself, does not grant them registration rights. They will equally need the judicial route.
- Practical limitation of Organic Law 1/2025 in real estate: The resolution makes clear that the executive force of MASC agreements does not extend to the mortgage registration sphere when the ownership of registered properties is at stake. This significantly reduces the appeal of MASC for this type of dispute.
- Risk of failed strategies: Advisors and parties that have designed their strategy assuming that the MASC agreement would avoid litigation must reconsider the approach from the outset.
Who does it affect?
- Long-term possessors seeking to register in their name a property that is registered in the name of another.
- Registered owners that have agreed extrajudicially to cede or recognize ownership to a possessor by adverse possession.
- Attorneys and legal advisors managing disputes over real property ownership and evaluating the use of MASC as an alternative to litigation.
- MASC mediators and facilitators operating in the real estate sector.
- Notaries that elevate such agreements to public deed.
- Real estate developers and managers with properties in prolonged unregularized possession.
Practical example
A family has been possessing for 35 years in a public, peaceful and uninterrupted manner a rural property in Orihuela that is registered in the name of the heirs of the person who sold it to them informally decades ago. They decide to regularize the situation and, under Organic Law 1/2025, initiate a MASC process with the heirs. They reach an agreement: the heirs recognize the adverse possession and elevate the agreement to a public deed before a notary.
They present the deed to the Property Register of Orihuela No. 1. The Registrar suspends the registration for the three reasons stated in the resolution: absence of a final judgment, lack of registrable title, and failure to prove the chain of title. The family appeals to the DGSJFP arguing that the MASC agreement has executive force. The DGSJFP confirms the suspension: they must go to court and obtain a judgment declaring the adverse possession. The MASC agreement, although valid between the parties, is not sufficient to modify the Register.
What should companies do now?
- Review open MASC files on adverse possession: If you have a MASC process underway to resolve an acquisitive prescription dispute over registered property, evaluate with your legal advisor whether the agreement reached will be sufficient or if you will also need to initiate judicial proceedings.
- Do not consider the dispute closed with the MASC agreement: An agreement signed and elevated to a public deed does not guarantee registration. Plan from the outset the judicial route as a necessary step if the property is registered in the name of a third party.
- Prove the chain of title before presenting any documentation to the Register: If there are intermediate unregistered transfers, gather the necessary inheritance documentation to avoid adding additional obstacles to the registration qualification.
- Inform clients about the real limits of MASC in real estate: Advisors and attorneys must adjust expectations: MASC is useful for resolving disputes between parties, but does not avoid judicial proceedings when it comes to modifying registered ownership by adverse possession.
- Consider judicial action from the outset: In adverse possession disputes over registered property, the judicial route is unavoidable to achieve registration. Design the strategy assuming that cost and timeline from the beginning.
Frequently asked questions
Does a MASC agreement on adverse possession have executive force?
Yes, Organic Law 1/2025 recognizes executive force for MASC agreements. However, according to the DGSJFP resolution of May 6, 2026, that executive force does not equate to mortgage registration effectiveness. To register in the Property Register a property acquired by adverse possession that is already registered in the name of a third party, a final court judgment remains essential.
Can the consent of the registered owner in a public deed substitute for the court judgment in adverse possession cases?
No. The DGSJFP expressly confirms that the consent of the registered owner expressed in a public deed—even within a MASC process—is not sufficient registrable title to prove acquisition by adverse possession of a registered property. The final court judgment is the only valid title for these purposes.
What three reasons did the Orihuela Registrar allege to suspend registration?
The Property Registrar of Orihuela No. 1 suspended registration for: (1) lack of registrable title, (2) absence of a final court judgment, and (3) failure to prove the chain of title. The DGSJFP confirmed all three reasons in its resolution.
What utility do MASC have then in real estate adverse possession disputes?
MASC can be useful for parties to reach an agreement on the terms of the dispute and reduce litigation, but do not avoid the need to go to court to obtain the final judgment that permits registration. Their practical utility in disputes over registered real property ownership is thus significantly limited according to the doctrine established by the DGSJFP.
What is the chain of title and why is it relevant in these cases?
The chain of title is the sequence of successive transfers that must be proven so that the Register correctly reflects who the current owner is. In adverse possession cases with intermediate unregistered transfers (for example, unformalized inheritances), the Registrar requires that such transfers be proven before any registration is made. The lack of this proof was one of the three reasons for suspension in the Orihuela case.
Official source
Consult complete regulation in official source
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-2026-17141