Half of Spain's rental listings are now seasonal lets

Eleven months and out: the loophole eating away at Spain's rental market

"Seasonal rental with minimum stay", "perfect for visiting lecturers", "available from September to June". This is not an isolated ad. It is the dominant pattern on property portals across Spain's 52 provincial capitals. The analysis published on 9 September 2026 — and updated two days later — puts the share of rental listings in Spain advertised as seasonal at one half. The formula is soaring in the capitals of Catalonia, the Basque Country and Galicia, precisely where designated high-pressure rental zones bite hardest. The decree that was supposed to limit the practice remains on hold.

What the LAU requires for a tenancy to count as seasonal

The most widespread misreading is the belief that eleven months is enough to sidestep the housing law. It is not. The LAU (Spain's urban lease law) treats seasonal tenancies as a use other than housing, and case law insists that what defines the contract is not the agreed length but its purpose: that the tenant's usual residence is elsewhere and they are there for studies, work or a similar reason. If what the arrangement covers is a permanent housing need, it is a residential tenancy even if the paper says seasonal. The loophole is not legal. It is de facto.

Why nobody sues the landlord of the flat they live in

There lies the knot. Whether a seasonal contract conceals a habitual home can only be declared by a judge, and that means suing the owner of the flat you need to keep living in. The maths does not add up: a lawsuit, months of uncertainty and a landlord who, in the best case, does not renew. Those who argue these are fraudulent, punishable rentals have the law on their side; those who reply that a penalty only arrives if someone asks for it have practice on their side. Both things are true at once.

The disputed thermometer: portals versus closed channels

Much of the scrutiny is aimed at the source. The big portals, the argument goes, recycle listings no longer on the market and gloss over the true picture of supply; moreover, a growing share of actual rentals circulates through opaque channels: messaging groups, social media, lists among professional associations, healthcare workers, civil servants, students. It may be an imperfect, biased thermometer. But if the sample exaggerates and it still comes out at half, it is worth asking what the rest has become.

The unsettling figure is not the national number, but what is being cited for Barcelona: less than 10% of the city's rental stock would no longer be eleven-month lets. And the decree, meanwhile, still has not arrived.