Turning a shop into a home in Spain: why the Land Registry can say no (ruling of 30 March 2026)

Published 26 August 2026 · Bufete Padilla · Planning and property law · Torrevieja, Elche and Moraira

It happens a lot on the Costa Blanca: someone buys a ground-floor commercial unit, fairly cheaply, refits it inside with a kitchen, a bathroom and bedrooms, and lives in it. Years later they try to sell it or pass it on, and at the notary the problem appears: the Land Registry still describes it as a "local", a commercial unit, not a home. Changing that single word is not a formality.

On 8 July 2026 Spain's Official Gazette published a ruling that clears a lot of this up, and it is worth knowing before you buy, sell or renovate: the ruling of 30 March 2026 of the Directorate-General for Legal Certainty and Public Faith (DGSJFP), BOE no. 165, reference BOE-A-2026-14847. You can download the full official text free, with no sign-up, at the end of this article.

> In 30 seconds. An owner tried to register the change from commercial unit to dwelling using only the cadastre, which showed it as a home "since 2009". The registrar refused. The Directorate-General backed the registrar: to register a change of use based on the passage of time, inside an already-registered building, the cadastre is not enough, nor an architect's certificate, nor a notarial record. You need a certificate from the town hall planning-enforcement department confirming that the use is settled and not contrary to the local plan.

What actually happened

• 20 November 2025. An owner signs a deed before a Madrid notary changing the use of his unit (unit 1-1 on the ground and semi-basement floor of a building in San Sebastián de los Reyes) so that it is described as a dwelling.
• As evidence he supplies the cadastral certificate, which records the property as a home since 2009. His argument is age: it has been like this for over fifteen years, so nobody can make me undo it.
• 9 December 2025. The Land Registrar of San Sebastián de los Reyes no. 2 suspends registration. Two things are missing: a change-of-use licence or, failing that, a responsible declaration with the town hall's act of conformity; and the first-occupancy responsible declaration.
• 17 December 2025. A substitute registrar is asked for a second opinion and confirms the refusal.
• 9 January 2026. The owner appeals: the Registry is not a planning inspector, article 28.4 of the Land Act allows registration by age, there is no enforcement file and no demolition order, and the building's statutes do not ban the change.
• 30 March 2026. The Directorate-General dismisses the appeal and confirms the refusal. No registration.

The core idea: use is not a detail, it is part of ownership

This is the key, and it explains everything else.

We tend to think that "it's mine, so inside it I do as I please". Spanish planning law works differently. The ruling puts it very clearly: the authorised use is not an accidental feature of the building, it forms part of its structure. A shop and a home are not the same asset with different furniture: legally they are two different things. So changing from commercial unit to dwelling is treated, for registry purposes, as modifying the registered new-build declaration, and the same requirements apply: those of article 28 of Royal Legislative Decree 7/2015 (Land and Urban Rehabilitation Act).

That article opens two doors:

| Route | What it is | What you must provide |
|---|---|---|
| Article 28.1 | The normal route: the works or the change are authorised | Municipal licence (or equivalent) plus a technical certificate |
| Article 28.4 | The age route: demolition can no longer be ordered because the deadlines have expired | Proof that the deadline has passed and that the use is not contrary to the plan |

The ruling does not close route 28.4 for changes of use. What it does is state which document proves it.