Well-founded answers to rental law questions — our AI system analyzes BGB, BGH rulings, and typical real-world rental law cases.
Try for freeYour landlord may only increase rent under certain conditions:
Legal basis: § 558 BGB
Over 500 BGB paragraphs on rental law, 50+ landmark BGH decisions, and hundreds of district and regional court rulings — regularly updated.
Typical problems and solutions from practice: tenant associations, legal portals, consumer advice centers. The system knows not just the law, but also the most common pitfalls.
Every answer cites the specific paragraphs and court rulings it is based on. No claims without evidence — you can verify everything yourself.
Ask questions about rent increases, termination, mold and more. Get well-founded answers instantly.
Create legally sound letters to your landlord with our digital assistant.
All answers are based on BGB and BGH case law with direct links to legal texts.
3 questions per day for free. No credit card required.
Take a photo of letters from your landlord and get an instant legal assessment. Text recognition runs locally on your device.
MieterHelfer is currently in beta testing. All features are free — 3 questions per day, including the letter generator and legal references.
Try for freeWell-founded answers to rental law questions — our AI system analyzes BGB, BGH rulings, and typical real-world rental law cases.
Try for freeImportant Notice: MieterHelfer provides general information about German rental law. This does not constitute legal advice and does not replace consultation with a lawyer. For individual legal questions, please consult a specialist lawyer for rental law.