The new Catalan regime for temporary letting and letting by rooms: evasion of the law, rent control and the limits of legislative competence
Catalan Laws 11/2025 and 11/2026 reshape seasonal tenancies and letting by rooms, linking them to rent control and to the notion of a permanent dwelling, the Spanish “vivienda permanente”. This paper examines the new arts. 66 bis and 66 ter —from the first— and 66 quater and 66 quinquies —from the second— of Law 18/2007, their interaction with the “Ley de Arrendamientos Urbanos” —the LAU, Spain's urban tenancies act— and the Civil Code, and the questions of legislative competence they raise, concerning the “causa de temporalidad” —the temporary purpose of the contract—, the burden of proof, the chaining of contracts and the civil effects of a possible finding of unconstitutionality.