How to Challenge Rent Increases for Improvements in Spain

Works and improvements during tenancy 3 min read · published September 11, 2025
If you are a tenant in Spain and your landlord announces a rent increase alleging works or improvements, it is normal to have doubts about your rights and the steps to take. This guide explains clearly who can challenge it, when the increase is legal according to the rules, what documentation to gather and how to notify your opposition. We also review relevant deadlines, negotiation options and what to do if the situation goes to court. We will avoid technical jargon and give practical examples, action templates and tips to protect your home and your finances. If you need help, you will know which official body or service can advise you.

What can justify a rent increase

Not all works or improvements authorize an automatic rent increase. In general, the landlord can propose an increase if the works improve habitability or efficiency and if the contract or the law allows it [1]. The justification must be proportional and communicated in writing.

  • Works that improve basic services (water, heating, electricity) and overall habitability.
  • Improvements aimed at energy efficiency or building safety.
  • Renovations that are not routine maintenance and that increase the property's value.
In most cases, tenants are entitled to minimum habitability conditions.

How to claim: steps and documentation

To file an effective claim, organize the information before contacting the landlord or a mediation service. Documenting the situation improves your chances of negotiation or success in court.

  • Lease agreement and any annexes or clauses about works and updates.
  • Previous communications between tenant and landlord (emails, messages, letters).
  • Photos, estimates, invoices and certificates of the work that the landlord provides.
  • Rent receipts and documents proving the previous and current amounts.
Keep copies of all communications with the landlord.

Deadlines and notifications

Meeting deadlines is key. Notify your opposition in writing and keep proof of delivery. Some actions require short deadlines to challenge or negotiate, so it is advisable to act promptly.

  • Notify the landlord of your disagreement in writing and with acknowledgment of receipt if possible.
  • Check the contract and the law for deadlines to accept changes or challenge increases.
  • If you receive a formal notice, respond to it and keep the response record.

If there is no agreement: judicial route

If negotiation fails, you can file a claim in the Court of First Instance. The procedure requires evidence, written submissions and compliance with procedural deadlines; for practical information consult the justice portal mjusticia.gob.es [2].

Frequently asked questions

Can the landlord raise the rent because of works?
Only if the works and the contract allow it and the increase is proportional; it must always be communicated in writing and comply with the law.
What evidence do I need to challenge the increase?
Lease, communications, photos, invoices and any document that proves the increase is not justified or that the works did not raise the value as declared.
How long can a court case take?
It depends on the court's workload and the complexity; prepare documentation and consult a professional to estimate approximate timelines.

How to claim

  1. Gather all relevant documentation: lease, communications, photos and estimates.
  2. Send a formal letter to the landlord stating your opposition and requesting clarifications or evidence.
  3. Try mediation or negotiation before going to court.
  4. If there is no agreement, file a claim in the Court of First Instance with all documentation.
  5. Keep copies and prepare originals for hearings or to submit as evidence.

Key takeaways

  • Read your lease before accepting rent changes.
  • Document everything: photos, estimates and written communications.
  • Seek mediation before starting judicial proceedings if possible.

Help and Support / Resources


  1. [1] BOE: Texto consolidado de la Ley de Arrendamientos Urbanos
  2. [2] Ministerio de Justicia: información y trámites
Bob Jones
Bob Jones

Editor & Researcher, Tenant Rights Spain

Bob writes and reviews tenant law content for various regions. They’re passionate about housing justice and simplifying legal protections for tenants everywhere.