The 2026 case-law earthquake over the Single Register of Short-Term Rentals
The judgments of the “Tribunal Supremo” —the Spanish Supreme Court— of May and June 2026 have annulled the essential elements of the “Registro Único de Arrendamientos de corta duración” —the Single Register of Short-Term Rentals— procedure provided for in Royal Decree 1312/2024, deactivating compulsory registration in the property and movable-assets registries as a condition for offering short-term lets. After this “case-law earthquake”, the “Ventanilla Única Digital de Arrendamientos” —the Digital Single Window for Rentals— and the obligations to transmit data for statistical and coordination purposes remain in place, but the civil‑administrative registration core disappears. This paper analyses what is left of the Single Register after the judgments and how it connects with the Catalan model, where strong administrative and community-level regulation of tourist rentals was already in place.