The Mietspiegel and Mietpreisbremse: Your Rent-Cap Rights

Signing fast in a competitive market, many newcomers never check whether the rent they agreed is even legal — and a surprising number are overpaying. Munich is covered by the rent brake, and the law gives you concrete tools to verify your rent and reclaim the excess. This guide is about your starting rent; for how rent can rise later in a tenancy, see our guide to rent increases. Here is how to use your rights.

What the Mietspiegel is

The Mietspiegel is Munich's official rent index, and the city publishes a qualified one, which carries real legal weight. It establishes the ortsübliche Vergleichsmiete (the local reference rent) for a flat of a given area, age, location and condition. Looking up where your flat sits on it tells you the benchmark against which your rent is judged — the starting point for any challenge.

The cap, in brief

Under the Mietpreisbremse (rent brake), a new lease in a strained market like Munich may not start more than 10% above that reference rent, and the rule runs through the end of 2029. There are exceptions — notably new builds first let from 2014 and flats after a comprehensive modernisation — so part of checking your rent is establishing whether one of those applies to your flat.

Your right to information

You are not left guessing. Under Paragraph 556g of the BGB you can require your landlord to disclose the facts needed to assess the rent: the previous tenant's rent, any modernisation in recent years, the building's age and the heating standard. Ask for this in writing. Without it you often cannot tell whether an exception is genuine or merely claimed, so it is the logical first step.

How to challenge an over-cap rent

To reclaim overpaid rent you must send the landlord a qualifizierte Rüge (a qualified written objection) under Paragraph 556g. It can be a letter or an email — text form is enough, though registered post gives you proof — and it must identify the breach and state the maximum lawful rent. The clause itself is automatically void to the extent it exceeds the cap, but the refund clock only starts once your objection arrives.

How far back you can claim

Timing is everything. If you send your objection within 30 months of the tenancy starting and you still live there, you can reclaim the entire overpayment back to the start of the lease. Object later than that, or after you have moved out, and you can only recover rent that fell due after the objection landed. A three-year limitation period also applies, which is why waiting costs you money.

Get help and act early

You do not have to do this alone. A tenants' association such as the Mieterverein München will check your contract and draft the objection for a modest annual membership fee, and free online tools can compare your rent to the Mietspiegel in minutes. The single most valuable move is simply not to delay, because every month inside the 30-month window protects more of your potential refund.

A worked check you can do today

Putting it together takes about half an hour. First, find your flat's reference rent: note its size, rough year of construction, location and fittings, then look up the matching figure in the Mietspiegel. Add 10% — that is the most a new lease may lawfully charge in Munich. Compare it to your actual Kaltmiete (cold rent), the base figure explained in our listing guide. If your rent sits at or below that ceiling, you are fine; if it sits clearly above it with no valid exception, you likely have a claim. Before acting, send the landlord your written request for the previous rent and any modernisation details, because their answer either confirms an exception or removes their last line of defence.

The rent brake only works for tenants who use it. Spend half an hour looking up your reference rent, ask the landlord for the figures behind your rent, and if it sits more than 10% above the benchmark with no valid exception, send the objection sooner rather than later. It is one of the few places in the rental system where a single letter can put real money back in your pocket.