Subletting in Finland: consent and appeals

Rent & increases (index, fair rent) 2 min read · published September 11, 2025

When you as a resident consider subletting, it is important to understand what consent and limits mean in Finland. This guide explains when a landlords permission is required, how to request consent in writing and what to do if permission is denied or terms feel unreasonable. I also explain how the correction or appeal process works and which documents, deadlines and evidence will help you. The text is aimed at tenants who want to protect their rights, avoid illegal subletting and, if necessary, seek remedies through authorities or the courts. I use clear language so that every person living in a rental understands the next steps.

What does subletting mean?

Subletting means that a tenant gives part or all of their rented dwelling to another person. Residential lease matters are regulated by the Act on Residential Leases, which contains detailed provisions on the requirements for subletting and consent.[1]

Subletting often requires the landlord's consent, unless the agreement states otherwise.

When is landlord consent required?

  • Subletting the entire rented dwelling almost always requires the landlords permission.
  • Permanent subletting or long-term agreements require the landlords approval.
  • If subletting causes a significant change to living conditions or rent, permission is usually needed.
A written consent is best kept for potential disputes.

Good content for a consent request

  • Write a clear request mentioning the subtenants name and the duration of the sublet.
  • Attach a proposal for the subrent amount and any proposed conditions in writing.
  • Set a response time and ask the landlord for written feedback or a signature.
Clear and documented communication reduces misunderstandings and disputes.

If the landlord refuses without valid reason or proposes unreasonable terms, you can consider correction or appeal. Often, you should first try negotiation and possibly mediation. If necessary, the matter can be taken to court or another competent body.[2]

FAQ

Do I always need written permission to sublet?
Not always, but written consent protects both the tenant and the landlord and is recommended, especially for long-term arrangements.
What should I do if the landlord refuses subletting without reason?
Try to negotiate first, collect documents and messages as evidence, and consider filing a correction request or taking the matter to court.
Can I charge rent from a subtenant without the landlord's permission?
If the agreement or law requires consent, subletting without permission may lead to breach of contract and termination.

How-To

  1. Write a clear request to the landlord stating the reason, duration and subtenants details.
  2. Keep all messages, contract terms and evidence such as photos and receipts that support your request.
  3. Set a reasonable response time for the landlord and send a reminder in writing if needed before the deadline.
  4. If consent is not given or refused without basis, consider correction, appeal or legal proceedings.

Key takeaways

  • Always request written consent or confirm verbal permission in writing.
  • Collect and keep evidence and messages, they help in disputes.

Help and support


  1. [1] Finlex: Act on Residential Leases (481/1995)
  2. [2] Oikeus.fi: Courts and legal services
Bob Jones
Bob Jones

Editor & Researcher, Tenant Rights Finland

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