The Mietspiegel (rent index) is one of Germany’s most useful but least-used tenant resources. Published by city governments, it shows the average rent for apartments of different sizes, conditions, and locations — giving you a legal benchmark to verify whether your rent is fair.
What the Mietspiegel Contains
The Mietspiegel breaks down average cold rents per square meter by: year of construction (Baujahr), size category (under 40m², 40-60m², etc.), location category (Wohnlage — simple, middle, good), and key features (floor, bathroom quality, central heating type, balcony, etc.). Cities also categorize neighborhoods — the same-sized apartment in a “good” Wohnlage costs more than in a “simple” Wohnlage by the Mietspiegel’s calculation.
Where to Find It
Munich: Mietspiegel 2023/2024 available at muenchen.de. Berlin: Berliner Mietspiegel at stadtentwicklung.berlin.de. Frankfurt: Mietspiegel Frankfurt at stadtplanungsamt.frankfurt.de. Hamburg: Hamburger Mietenspiegel. Most major cities publish updated Mietspiegel every 2 years.
Checking Your Rent Against the Mietspiegel
Calculate: what is your apartment’s size? When was the building constructed? What is the Wohnlage category? What special features does it have? Using the Mietspiegel table for your city, calculate the ortsübliche Vergleichsmiete (local comparable rent) for your apartment. If your rent is more than 10% above this in a Mietpreisbremse city, you may have grounds to challenge it.
AI helps here: “Help me calculate the Mietspiegel-based reference rent for an apartment in Munich using the 2024 Mietspiegel. Apartment specifications: [size, construction year, location category, features]. My current rent is €X. Is this within 110% of the Mietspiegel reference rent?”
Using the Mietspiegel for Rent Increase Challenges
When your landlord raises rent: they’re legally required to reference the Mietspiegel (or alternative like a comparative rent analysis or expert report). If their proposed rent exceeds the Mietspiegel-based threshold, you have 2 months to formally object. Write a letter citing: the specific Mietspiegel values for your apartment category, your calculation of the reference rent, and your formal objection to the increase.
Mietspiegel at the Mieterverein
The Mieterverein (tenant association) can calculate your apartment’s position in the Mietspiegel and advise on whether a rent increase is legally justified. This is one of the most valuable membership benefits — a single successful rent increase challenge often saves more than the annual membership fee.
