Tenant Guide: Comparable Flats in Germany

Rent & Rent Control 3 min read · published September 07, 2025

As a tenant in German big cities you are often affected by comparable flats: landlords use them to justify appropriate rents or rent increases. This text explains clearly which criteria courts and authorities in Germany consider when evaluating comparable flats, how the rent brake works and what rights tenants have with rent reduction, modernization and termination. I show practical steps for documentation, which official forms are relevant and when going to the local court makes sense. This guide helps to meet deadlines, collect evidence and negotiate actively with the landlord so you can better protect your interests. It includes examples and notes on BGH decisions as well as links to official forms and court offices. This way you find comparable flats, check rent index data and act with legal certainty.

What are comparable flats?

Comparable flats are units landlords or courts use to determine the local customary rent. Important criteria are location, living area, fittings and year of construction. For tenants it is important to know that not every single flat must match exactly; standards are statistical similarity and usual fittings.

Pay attention to how landlords justify the comparable flats.

How are comparable flats examined?

Courts usually consider local rent indices, listings and actual rental contracts. As a tenant you can object if comparable flats are clearly less well equipped or the square meter figures are incorrect.

  • Check rent indices and comparable listings in your city.
  • Compare living area, number of rooms and equipment carefully.
  • Document differences with photos and measurement records.
  • Record ongoing costs and service charge statements as evidence.
Detailed documentation increases your chances in legal disputes.

Rights under the rent brake and rent adjustments

The rent brake limits new rentals above the local customary rent in certain areas; tenants can claim back excessive rents or challenge legality. For rent increases formal requirements must be met, otherwise they are contestable.

Statutory bases are found in the Civil Code [1] and in procedural rules for lawsuits before local courts and higher instances [2]. For precedent courts refer to decisions of the Federal Court of Justice [3].

Forms, templates and court steps

For disputes the following forms and templates are particularly relevant:

  • Notice of termination (tenant): sample texts help with formally correct termination and meeting deadlines.
  • Application for payment order or claim: when it concerns outstanding amounts.
  • Evidence files and protocol templates: photos, defect notices and appointment notes for documentation.
Submit lawsuits and objections in time, otherwise claims may lapse.

If negotiations fail, the local court (rental law) is the first instance; appeals go to the regional court and possibly to the Federal Court of Justice. Use the official court forms and justice guidance before filing a claim.

FAQ

How do I find suitable comparable flats?
Compare listings, rent indices and actual rental contracts in your neighborhood; pay attention to living area, fittings and location.
Can I reclaim overpaid rent?
Yes, if the rent violates the rent brake or comparable flats were wrongly used, you can reclaim overpaid amounts.
When should I involve the local court?
When negotiations with the landlord fail and deadlines pass, filing a claim at the local court is often the next step.

How-To

  1. Collect evidence: photos, listings, rental contract and service charge statements.
  2. Check your city rent index and note suitable comparable flats.
  3. Send a formal written defect notice or objection to the landlord.
  4. Use official forms or template letters for objection or termination.
  5. File a claim at the local court if necessary and attach your evidence file.

Help and Support / Resources


  1. [1] Civil Code (BGB) §§ 535–580a
  2. [2] Code of Civil Procedure (ZPO) - Jurisdiction and procedure
  3. [3] Federal Court of Justice (BGH) - Precedents in rental law
Bob Jones
Bob Jones

Editor & Researcher, Tenant Rights Germany

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