Rent & rent increases

Raise an Indexmiete under § 557b BGB: the VPI formula, the one-year lock period, and the Textform notice with the index figure. Calculate the new rent correctly.

Mieterhöhung (rent increase) to the ortsübliche Vergleichsmiete: the Kappungsgrenze cap, Mietspiegel, deadlines and form under § 558 BGB — explained for landlords.

The Mietpreisbremse caps re-letting rent at 10% above the ortsübliche Vergleichsmiete (§ 556d BGB). Exceptions, the landlord disclosure duty and deadlines, explained clearly for landlords.

After a modernisation you may pass on 8 % of the costs to the annual rent (§ 559 BGB). Kappungsgrenze, the 3-month notice and the Erhöhungserklärung — done correctly.

Check your Indexmiete and calculate the VPI increase yourself: the formula, minimum 1-year gap, Textform with index figures (§ 557b BGB). Know if the increase is correct.

Check your Mieterhöhung against the Kappungsgrenze, the ortsübliche Vergleichsmiete and the consent deadline under § 558 BGB – and learn exactly how to respond.

Mietpreisbremse check: in designated areas, a new tenancy's rent may exceed the ortsübliche Vergleichsmiete by at most 10%. How to challenge an overcharge and reclaim it.

When your flat is modernised, the landlord may add 8 % of the costs to the rent (§ 559 BGB), capped at 3 €/m². Duldungspflicht, Härteeinwand and your Sonderkündigungsrecht – your rights in 2026.

Check a Staffelmiete or Indexmiete: fixed euro amounts and 12 months per step (§ 557a), VPI link and Textform for index rent (§ 557b). How to tell whether the increase is legal.