Can your landlord just raise the rent?

No. Rent increases in Denmark are tightly regulated. What your landlord can do depends on your contract type and whether your area has additional regulations.

The three types of rent adjustment

1. Net price index adjustment Many contracts include a clause allowing rent to be adjusted annually according to Statistics Denmark's net price index. This requires 3 months' written notice and must be explicitly stated in the contract.

2. Market rent adjustment In some cases, landlords can raise rent toward market level — but only if: the tenancy started after 1 July 2015; at least 4 years have passed since the last adjustment; and at least 3 months' written notice is given. If you disagree, complain to the Huslejenævn.

3. Regulated municipalities (e.g. Copenhagen) In cities with housing regulation (boligregulering), additional restrictions apply. Rent is typically capped at "the rental value" of comparable properties — landlords cannot freely raise to full market rent. Many tenancies in Copenhagen fall under this protection. Check with your local tenants' association or Huslejenævn if unsure.

What about utilities and heating?

Heating, water, and energy charges are adjusted separately and are not subject to the same rules as rent. Your landlord must provide an annual heating account, and you have the right to have it explained.

Minimum notice

Any rent increase requires 3 months' written notice minimum. Shorter notice is legally invalid.

What to do if you disagree

File a complaint with the Huslejenævn. They can assess whether the increase is lawful and whether the new rent is reasonable.