Challenge Rent Index: 5 Steps for Tenants in Germany

Many tenants in Germany are unsure how to use the rent index to challenge excessive rents or unfair comparables. This step-by-step checklist is aimed at existing tenants and shared flats and explains in plain language which data to collect, which forms and deadlines matter, and how to properly prepare a challenge. You will learn which official sources and examples count in court, how to select comparable flats and which proofs (photos, correspondence, utility bills) improve chances of success. At the end you will find practical action steps and notes on courts and responsible authorities in Germany so you can assert your rights as a tenant confidently. This guide also contains template texts for objections and tips on keeping deadlines.