Rent cap

Rent cap - The term “rent cap” refers to a government regulation that limits rent prices by setting absolute upper limits - in contrast to the rent control measure, which is based on the local comparative rent. The best-known rent cap in Germany was the Berlin Rent Cap (MietenWoG Bln, 2020-2021), which was declared unconstitutional by the Federal Constitutional Court in April 2021, as rent control law falls under federal jurisdiction.

Distinction from the Rent Control Act

The Rent Control Act (§ 556d BGB) limits rent for new leases to a maximum of 10% above the local comparative rent-it is a federal law and applies in areas with a tight housing market. A rent cap goes further: It sets absolute upper limits (e.g., euros per square meter based on year of construction and amenities) that apply regardless of the market rent. According to the Federal Constitutional Court’s ruling, only the federal government-not the states-can introduce such more far-reaching rent regulations.

Another important difference: The rent brake only applies to new leases and leaves existing tenancies unaffected. A rent cap, on the other hand, can directly affect existing tenancies-such as Berlin’s rent cap, which also capped current rents and in many cases forced rent reductions. This impact on existing contracts was one of the main reasons why the Federal Constitutional Court ruled the law unconstitutional under federal law.

The Berlin Rent Cap as a Case Study

The Berlin Rent Cap Act (MietenWoG Bln) took effect in February 2020 and initially froze rents for approximately 1.5 million apartments at the level of June 18, 2019. Later, it even provided for rent reductions in certain cases. The consequences were far-reaching: Many landlords took apartments off the market, new construction was primarily marketed as owner-occupied, and prices rose in the unregulated market for new apartments. When the Federal Constitutional Court struck down the law in April 2021, tenants in many cases had to make back payments-which was particularly burdensome for low-income households.

This example illustrates the unintended side effects of overly rigid regulation: short-term relief for existing tenants was followed by a shortage of supply, which exacerbated the market problem in the long term.

Economic Effects of a Rent Cap

Economic research is largely unanimous in its assessment of rent caps: price caps lead to a shortage of supply in the medium term because expected returns on new investments decline and landlords withdraw existing apartments from the rental market. At the same time, rents rise in the unregulated segment-for new construction or commercial properties-because demand shifts there.

For existing tenants who keep their apartments, a rent cap can provide short-term relief. In the long term, however, the condition of the regulated housing stock deteriorates as owners compensate for declining returns by reducing investments. This effect is well documented by international experience with rent controls.

Political Discussion

The debate over a nationwide rent cap continues. Proponents argue for the protection of low-income tenants in tight markets. Opponents warn of declines in investment by landlords, a drop in new construction, and a deterioration of the building stock. As of 2026, there is no rent cap at the federal level in Germany-the rent brake and the cap limit are the existing regulatory instruments.

Politically, the issue primarily comes onto the agenda during federal election years, as it is popular as a tenant protection measure. Investors and institutional investors closely monitor related announcements, as a nationwide rent cap would have significant implications for valuations and financing terms for residential real estate.

Practical Tip for Landlords in Nuremberg

We recommend that landlords in Nuremberg be thoroughly familiar with and comply with the existing regulations-rent control and reduced cap limit (15% over three years). There is currently no rent cap in Bavaria or Nuremberg. Nevertheless, landlords should monitor political developments, as stricter regulations could be enacted at the federal level at any time.

Those investing for the long term should keep rent increases moderate and legally compliant-this avoids legal disputes and ensures a good landlord-tenant relationship. Stable rent levels over the long term also protect landlords from vacancies caused by tenants who can no longer afford the rent. We actively monitor regulatory developments for our clients and inform them of any relevant changes.

Frequently Asked Questions

Is there currently a rent cap in Bavaria?

No. There is no rent cap in Bavaria. The nationwide instruments apply: rent control (for new leases in tight markets, applicable in Nuremberg) and cap (for rent increases in existing tenancies, reduced to 15% in Nuremberg).

Could a new rent cap be introduced at the federal level?

Theoretically, yes. Following the 2021 ruling by the Federal Constitutional Court, it is clear that only the federal government may establish rent control laws. A nationwide rent cap would have to be passed by the Bundestag. Currently, there is no parliamentary majority in favor of this, but the discussion is being held by several parties.

What does a rent cap mean for property value?

A rent cap reduces the achievable rental income and thus the income value of a property. During Berlin’s rent cap, purchase prices for multi-family homes in affected segments fell by an estimated 5-10%. After the cap was lifted, prices recovered quickly. For investors, regulatory certainty is an important location factor.

How does the rent cap differ from the rent control in concrete terms?

Rent control allows new lease rents to be up to 10% above the local comparative rent-it thus imposes a relative limit rather than an absolute one. A rent cap sets fixed euro-denominated upper limits, regardless of market conditions. The rent brake also leaves existing high rents untouched, whereas a rent cap can also cap current leases. This fundamental difference makes rent caps far more significant for owners and investors.

How do I protect my investment from potential future regulations?

Complete protection is not possible. However, those who rely on market-rate rents without extreme markups, hold high-quality properties with low vacancy risk, and ensure broad geographic diversification can reduce regulatory risk. Investments in new construction are generally exempt from regulations for longer periods than existing properties. We advise our clients on structuring real estate portfolios to be resilient to regulation.

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