Tenant: Lost Key and Deposit in Denmark

Deposit & prepaid rent 2 min read · published September 11, 2025

Losing a key can cause practical and financial worries for a tenant. This guide explains your rights in Denmark, how the security deposit can be affected, and the steps you should take to limit expenses and document the situation. We review what can typically be deducted from the deposit, how to request justification from the landlord, and the deadlines and complaint options if you cannot agree. The aim is to give clear, practical advice for tenants without prior legal knowledge so you can act quickly and correctly in the event of a lost key or a dispute about the deposit. You will also get a step-by-step guide to replacing locks and keys, tips for documentation with photos and receipts, and information on how the Rental Tribunal or courts can help in disputes.[1]

What can the landlord deduct from the deposit?

The landlord may only deduct documented and reasonable costs. Typical items can include:

  • Unpaid rent or late fees.
  • Repairs resulting from damage beyond normal wear, e.g. a broken lock or door.
  • Cleaning or restoration for neglect if it is documented in the lease agreement.
Keep receipts, photos and correspondence with the landlord.

What should you do immediately after losing a key?

Follow these practical steps to protect your rights and limit costs:

  • Notify the landlord in writing (email or letter) with the date and description.
  • Document the incident with photos, receipts and any police report.
  • Obtain quotes for lock replacement and keep invoices to show reasonable costs.
  • Watch deadlines for landlord responses and any complaint periods.
Respond to written notices within the deadline to avoid losing your rights.

What can you do if the landlord deducts unfairly?

If you believe a deduction from the deposit is unjustified, you can request a detailed statement and documentation from the landlord. If you cannot agree, you can file a complaint with the Rental Tribunal or have the matter reviewed by a court.[2]

FAQ

Who pays for a new lock when a key is lost?
As a tenant you may often be asked to pay if the key was lost by you; the landlord must however document reasonable costs.
Can a landlord deduct amounts from the deposit without agreement?
The landlord may only deduct for documented damages or unpaid rent; in case of dispute the matter can be brought before the Rental Tribunal.
What should I do first after losing a key?
Notify the landlord in writing, document the incident with photos and receipts, and obtain quotes for lock replacement.

How to

  1. Send an email to the landlord with the date, location and a brief description of the situation.
  2. Collect documentation: photos, receipts and any police report.
  3. Obtain and keep invoices for lock replacement or repairs.
  4. Request a written statement from the landlord if the deposit is to be used.
  5. If you cannot agree, file a complaint with the Rental Tribunal or seek legal advice.
  6. Keep all correspondence and receipts for at least five years.

Key takeaways

  • Documentation increases your chances in a dispute.
  • The landlord may only deduct documented and reasonable costs.

Help and support / Resources


  1. [1] Retsinformation - Lejeloven
  2. [2] Huslejenaevn - Complaint and guidance
  3. [3] Borger.dk - Housing and rental guidance
Bob Jones
Bob Jones

Editor & Researcher, Tenant Rights Denmark

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