KlarMiet
Know in a minute whether your rent is even legal
KlarMiet is a free, AI-powered checker that tells German tenants in under a minute whether their rent is legal — the rent cap, the utility bill and the lease, all in one place.
German rental law is a minefield of paragraphs — the Mietpreisbremse (§556d BGB), the Nebenkostenabrechnung, the clauses buried in a Mietvertrag. Most tenants never check whether they're overpaying, because checking means reading the law, comparing against the local Mietspiegel and decoding a contract. KlarMiet does all of that with an AI analysis: enter your data or upload documents, and in under 60 seconds you get a clear answer with the numbers and the paragraph behind them — and a ready-to-send letter. Free, no sign-up, DSGVO-first, servers in Frankfurt.
A tenant who suspects their rent is too high has three bad options: read §556d BGB and the local Mietspiegel themselves, pay a lawyer, or join the Mieterverein and wait. So most just keep overpaying — often thousands a year — because the effort to even find out is higher than the discomfort of not knowing.
KlarMiet turns each rental problem into one focused AI tool. Seven specialised analyses — rent-cap check, utility-bill audit, contract scanner, rent-reduction, deposit recovery, rent-increase check — each run against live Mietspiegel data and the exact BGB paragraph, and each end in a pre-formulated letter to the landlord. You enter data or upload a document; the result comes back in seconds, in plain language, with the legal basis attached. No registration, no credit card, DSGVO-first by design.
See it in motion
What it does
Mietpreis-Checker
Enter your address and rent; KlarMiet checks it in seconds against the local Mietspiegel and the §556d rent cap, and shows exactly how much you may be overpaying.
Nebenkosten-Audit
Upload your utility statement and the AI finds errors, inconsistencies and overcharges — and calculates the refund you may be owed.
Vertrag-Scanner
An AI read of your lease for illegal clauses, inflated deposits and hidden risks, mapped to the paragraphs that make them void.
An answer in under 60 seconds
Enter data or upload documents and get a result checked against current law, live Mietspiegel data and case law — in plain language, no expertise needed.
A letter, ready to send
Every analysis ends with a pre-formulated letter to the landlord — so knowing you have a claim and acting on it are the same step.
Free, no sign-up, DSGVO
Permanently free, no registration and no credit card, DSGVO-first with servers in Frankfurt — built so checking your rights costs you nothing.
By the numbers
Built with
- Next.js
- React
- TypeScript
- Tailwind
- AI / LLM
