Urban Leases: Secure Contracts under the LAU and the 2023 Housing Act

Urban lease law in Spain is governed by the Urban Leases Act (LAU 29/1994 — Ley de Arrendamientos Urbanos) as substantially amended by Law 12/2023 on the Right to Housing (Ley 12/2023 por el Derecho a la Vivienda). The 2023 reform introduced structural changes to the residential lease market: mandatory rent update through a new INE index (IRACV), the declaration of stressed residential market zones with rent caps in new contracts, reinforced protections for tenants in eviction proceedings and additional obligations on large landlords. The practical impact of these changes varies significantly by autonomous community: Catalonia, the Balearic Islands and the Basque Country have actively used the stressed zone mechanism, while other communities have not.

Key changes under Law 12/2023

The 2023 Housing Act introduced four significant changes to residential lease law:

Rent update index. The consumer price index (CPI) is no longer the standard reference for annual rent updates. From 2025, the IRACV (Reference Index for Updating Residential Lease Contracts) published quarterly by INE applies. The IRACV has a 2% cap until 2025.

Stressed market zones. Autonomous communities may declare stressed residential market zones. In such zones, rents in new contracts are capped at either the previous contract’s rent (updated by IRACV) or the regional rent reference index, whichever is lower. Large landlords face stricter caps.

Large landlord obligations. Companies owning more than ten residential properties (or 1,500 m² of residential floor area) in a stressed zone face stricter rent caps and additional procedural requirements before eviction.

Enhanced eviction protections. Social services must be notified before enforcement of an eviction when the tenant evidences vulnerability, with a potential suspension of up to three months. This adds significant uncertainty to the eviction timeline for landlords of vulnerable tenants.

Residential vs seasonal vs non-residential: correct classification matters

The LAU distinguishes three lease types with very different legal consequences. Residential leases (Art. 2) attract mandatory 5 or 7-year extension periods. Seasonal leases (Art. 3) covering temporary needs do not attract mandatory extensions. Non-residential leases (Art. 3, commercial premises) are primarily governed by party agreement, with limited LAU protections.

Misclassification — particularly using a seasonal contract to circumvent the residential lease protections — is a significant risk: courts have been consistent in reclassifying such arrangements and applying retroactive LAU protections to the tenant.

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