Tenant: Lost Key and Deposit in Norway

Deposit & blocked account 3 min read · published September 11, 2025

Losing a key can be stressful for a tenant, especially when the security deposit or lease may be affected. This guide explains step by step what you should do in Norway: how to notify the landlord, document costs, consider compensation from the deposit, and which deadlines apply. We cover who usually pays for lock changes or extra keys, when you can be held financially responsible, and how to complain if you believe a deduction from the deposit is unfair. The aim is to give practical, easy-to-understand advice so you can act quickly, preserve evidence and protect your rights as a tenant. You will also get concrete suggestions on how to document costs, request receipts and what communication works best with the landlord.

What to do first

Notify the landlord as soon as possible, preferably in writing. State which key was lost, where and when it happened, and propose measures such as changing the lock or temporary securing. If the key can be linked to an apartment with mail or other security risks, take extra precautions immediately. [1]

Contact the landlord immediately and ask for written confirmation of the agreed solution.

Documentation requirements

Take photos, note the time and any witnesses. Ask for receipts for expenses related to lock changes, new keys or locksmith services. Documentation strengthens the case if there is disagreement about a deposit deduction. [2]

Keep all receipts and communication between you and the landlord in the same folder.

Typical costs and who pays

  • Costs for changing the lock or rekeying may be charged if the key provides unauthorized access.
  • Costs for extra keys are often covered by the tenant if the key loss was due to negligence.
  • Receipts and invoices are necessary documentation to demand reimbursement or to dispute an unreasonable deposit deduction.
  • Notify within a reasonable time; failure to notify can weaken your position in a dispute.
Do not pay cash without a receipt for locksmith or key work.

What if the landlord wants to deduct from the deposit?

Request a detailed specification of the costs in writing. If the amount seems unreasonable, demand documentation and receipts. In case of disagreement, the matter can be brought to the Husleietvistutvalget (HTU) or to the conciliation court/district court depending on the amount and nature of the case. [2]

The Tenancy Act (Husleieloven) sets limits on what may be deducted from the deposit for damages and failure to return keys.

Frequently Asked Questions

Can the landlord claim my entire deposit if I lose a key?
No, the landlord may only claim documented costs resulting from the loss; a general "penalty" is not permitted.
Who pays for a locksmith if a key is lost outside the tenancy?
If the loss is due to the tenant's negligence, the tenant may be financially responsible for the lock change.
How do I complain about a deposit deduction?
Write to the landlord and request justification and receipts. If no agreement is reached, you can complain to HTU or file a case in the conciliation court.

How to (step by step)

  1. Notify the landlord in writing as soon as you discover the loss and describe the situation.
  2. Arrange temporary securing or lock replacement if security is affected.
  3. Collect receipts and documentation for all costs related to locks and keys.
  4. If a dispute arises, contact the Husleietvistutvalget or a legal authority for guidance.

Help and Support / Resources


  1. [1] Lovdata — Husleieloven
  2. [2] HTU — Husleietvistutvalget
  3. [3] Domstol.no — information on disputes
Bob Jones
Bob Jones

Editor & Researcher, Tenant Rights Norway

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