Subletting in Spain: LAU Article 8 Subarriendo Rules, Landlord Consent and What Happens When a Tenant Sublets Without Permission (2026)

Subletting in Spain is legal but tightly restricted. Under Article 8 of the Ley de Arrendamientos Urbanos (LAU, Ley 29/1994), a residential tenant may sublet part of the dwelling only with the landlord’s prior written consent, and the sublet rent cannot exceed the original rent. If the tenant sublets without that consent, the landlord can terminate the lease of full right under Article 27.2.c. The rules differ sharply for commercial leases, where Article 32 allows subletting without consent but lets the landlord raise the rent. Since 3 April 2025, listing a residential rental on Airbnb without consent also breaches the community-of-owners tourist-let regime under LO 1/2025.

What is the difference between subarriendo and cesion under the LAU?

Spanish tenancy law draws a clear line between two forms of transferring occupancy. A cesion (cession or assignment) under LAU Article 8.1 transfers the entire lease to a new tenant, who steps into the original tenant’s position. A subarriendo (sublet) under Article 8.2 lets the original tenant remain the head tenant while a third party occupies a part of the dwelling under a separate sublet agreement. Both require the landlord’s written consent for residential leases, but they have different mechanics and consequences.

The key practical distinction is who remains liable to the landlord. In a cession, the original tenant exits the contract and the new tenant (cesionario) takes over all obligations. In a sublet, the original tenant stays on the hook to the landlord and manages the subtenant directly. The sublet is also limited to a partial area of the dwelling: you cannot sublet the entire property under Article 8.2, because that would defeat the purpose of a habitual-residence lease. Subletting the whole flat is legally a cession, governed by the stricter consent rule in Article 8.1.

When can a tenant legally sublet a residential property in Spain?

A residential tenant can sublet only when three conditions are met, all drawn from LAU Article 8.2:

Requirement	Legal basis	What it means
Written landlord consent	LAU Art 8.2	The landlord must agree in writing, either in the original lease or in a separate document. Verbal consent does not satisfy the statute.
Partial sublet only	LAU Art 8.2	The tenant can sublet a room or a portion of the dwelling, not the entire property. Subletting the whole flat is a cession under Art 8.1.
Rent cannot exceed original	LAU Art 8.2	The sublet rent must not exceed the rent the tenant pays under the head lease. Overcharging gives the subtenant a right to claim back the excess.

The sublet is also bound by the head lease’s term. Under Article 8.2, the subtenant’s right ends automatically when the head tenant’s lease ends, regardless of any separate agreement between the tenant and subtenant. If the sublet area is used as a habitual residence, it follows the same residential rules as the head lease; if used for a temporary stay, the parties can agree their own terms.

What happens if a tenant sublets without landlord consent?

Unauthorised subletting or cession is one of the enumerated grounds for termination in LAU Article 27.2.c, which lets the landlord “resolver de pleno derecho el contrato” (terminate the lease of full right) in cases of “el subarriendo o la cesion inconsentidos”. The landlord does not need to give the tenant a chance to cure the breach; the right to terminate arises the moment the unauthorised transfer occurs.

The Audiencia Provincial de Las Palmas (section 3, judgment of 7 November 2024, no 735/2024) confirmed this in a case where a tenant sublet rooms through an online listing without the landlord’s written consent. The court held that what triggers the resolution is “the introduction of a third party into the use or enjoyment of the leased property, in a manner different from that determined by the law and essentially without the landlord’s consent.” Crucially, the court ruled that the landlord only needs to prove a third party occupied the property; whether the subtenant paid rent is irrelevant, and the landlord need not prove every element of a formal sublet or cession.

This means a tenant who lets a friend stay rent-free, or who lists a room on a platform, has committed an unauthorised sublet if the landlord never gave written consent. The landlord can file an eviction action based on Article 27.2.c and need not show any financial harm.

How does subletting on Airbnb interact with the tourist-let rules?

Listing a residential rental on Airbnb or similar platforms without landlord consent creates a double breach. First, it is an unauthorised sublet or cession under LAU Article 8 and Article 27.2.c, because the tenant is transferring occupancy to third parties without written permission. Second, since 3 April 2025, it is also a tourist-let breach under the Ley Organica 1/2025, which amended the Ley de Propiedad Horizontal (LPH) to require community approval for short-term tourist lets.

The LO 1/2025 reform added LPH Article 7.3, which lets a community of owners prohibit tourist lets by a three-fifths majority vote, and Article 17.12, which requires prior community approval before a property can be used for tourist accommodation. This means a tenant who lists on Airbnb without landlord consent faces not only lease termination by the landlord under the LAU but also potential action by the community of owners, which can seek to stop the activity through the courts. For more on the short-let registration and community veto framework, see the Costa del Sol short-let rules guide.

Do the subletting rules differ for commercial leases?

Yes, and the difference is fundamental. For non-residential leases (locales de negocio), LAU Article 32 reverses the consent requirement. A commercial tenant may sublet or assign the lease without the landlord’s consent. The landlord’s remedy is a rent increase, not a veto: 10% for a partial sublet and 20% for a full cession or total sublet, under Article 32.2.

Feature	Residential (Art 8)	Commercial (Art 32)
Landlord consent required	Yes, must be written	No
Scope of sublet	Partial only	Full or partial
Rent cap	Cannot exceed original rent	Landlord can raise 10-20%
Termination for unauthorised sublet	Yes, Art 27.2.c	No (consent not required)
Notification	Not specified	Tenant must notify landlord within one month

The commercial tenant must still notify the landlord within one month of the sublet or cession, under Article 32.4. Corporate restructurings (mergers, transformations, spin-offs) do not count as a cession but still trigger the rent increase right under Article 32.3.

How can a non-resident landlord detect and enforce against unauthorised subletting?

Non-resident landlords face a practical challenge: they are not on site to monitor who occupies the property. The detection and enforcement path follows a clear sequence:

1. Monitor listings: regular checks of Airbnb, Booking.com and idealista for the property’s address or photographs. The Las Palmas case was detected because the landlord found an online listing with photos of the flat.
2. Community intelligence: the building’s administradora (property manager) or neighbours can report unfamiliar occupants. In the Las Palmas judgment, the community administrator testified that neighbours had reported subtenants.
3. Send a burofax: once suspected, the landlord sends a formal burofax (certified letter with acknowledgement) requiring the tenant to clarify who is living in the property and on what basis.
4. Demand written proof of consent: the tenant must produce the landlord’s written consent. If none exists, the breach is established.
5. File an eviction action: the landlord files under LAU Article 27.2.c for termination of the lease and eviction. The express eviction procedure under LEC Article 437.1 applies.

For the broader eviction timeline and landlord rights, see the eviction process guide. For the general tenancy law framework, see the LAU guide.

What rent can the subtenant be charged, and what remedies exist for overcharging?

LAU Article 8.2 sets an absolute ceiling: the sublet rent cannot exceed the rent the head tenant pays under the original lease. This rule protects both the landlord (whose investment return is tied to the contract rent) and the subtenant (who should not pay a premium for a derivative right).

If the tenant charges more than the original rent, the subtenant has two remedies under the LAU framework. First, the subtenant can demand termination of the sublet and recover all overpaid amounts. Second, the subtenant can simply claim a refund of the excess paid while continuing the sublet. The choice belongs to the subtenant, not the head tenant.

This rent cap is one reason residential subletting is rarely profitable for tenants. A tenant paying EUR 1,000 per month cannot legally charge a subtenant EUR 1,200. The only lawful margin is zero. The cap does not apply to commercial sublets under Article 32, where the landlord’s 10-20% rent increase is the mechanism for capturing the transfer value.

What should a tenancy contract say about subletting?

A well-drafted Spanish residential lease should address subletting explicitly, even though the LAU sets the default rules. Standard clauses to include:

• A prohibition on subletting or cession without prior written consent, mirroring LAU Article 8.
• A statement that unauthorised subletting constitutes a breach triggering Article 27.2.c termination.
• A requirement that the tenant notify the landlord of any change in occupancy.
• A reference to the rent cap in Article 8.2 for any authorised sublet.

The Las Palmas judgment upheld a clause that “prohibe expresamente la cesion del contrato y/o subarriendo parcial y/o total de la vivienda arrendada.” The court found the clause reinforced the statutory rule and confirmed the landlord’s right to terminate. For the different contract types available under Spanish law, see the rental contract types guide. For the non-resident landlord’s full operational framework, see the renting out property guide.

Can the landlord refuse consent for a sublet, and are there limits?

The LAU does not impose a duty on the landlord to consent to a sublet, nor does it set out criteria for refusing. The landlord can refuse for any reason or no reason. This is a significant power: the tenant has no statutory right to sublet over the landlord’s objection. The only route to a lawful sublet is the landlord’s written agreement.

In practice, landlords who want to accommodate a tenant’s request may add conditions: a rent review, a shorter sublet term, a requirement that the subtenant sign a direct acknowledgment of the head lease terms, or a higher deposit under LAU Article 36.5 (which allows parties to agree additional guarantees beyond the statutory one-month deposit). If the landlord simply says no, the tenant’s only options are to continue the lease as originally agreed or to end it through the normal termination mechanisms.

What is the escalation flowchart from discovery to termination?

The enforcement path for unauthorised subletting follows a structured sequence that balances the landlord’s rights with the tenant’s opportunity to respond:

Step	Action	Legal basis
1	Detect unauthorised occupancy via listings, neighbours or community	Practical monitoring
2	Send burofax requiring tenant to explain occupancy	Pre-litigation notice
3	Review the lease for a subletting clause	Contract + LAU Art 8
4	If no written consent exists, file eviction action	LAU Art 27.2.c
5	Court orders termination and eviction	LEC Art 437.1 express route
6	Lanzamiento (eviction) carried out	LEC Art 498-503

The landlord does not need to prove rent was charged to the subtenant. The Las Palmas court confirmed that proving a third party occupied the property is sufficient, and the landlord need not demonstrate “all the requirements of the cession or the sublet, total or partial, and specifically, the existence of rent or consideration.”

This guide is general information, not legal or tax advice. Rules change and individual circumstances differ. Verify current requirements with an independent lawyer (abogado) or tax advisor (gestor/asesor fiscal) before acting.