Law & Politics
New law for Berlin's housing market
Berlin rent cap 2020: the key facts for landlords and property owners
The rent cap law was passed and took effect in February 2020. What does the rent freeze mean for landlords? An overview of the rules, exceptions and penalty risks.
Peter Guthmann
What does Berlin's rent cap regulate?
On 30 January 2020, the Berlin House of Representatives passed the "Law on Rent Limitation in Housing in Berlin" (MietenWoG Bln), commonly known as the Mietendeckel or rent cap. After publication in the Official Gazette, it took effect in mid-February 2020. For property owners and investors, the law created immediate obligations.
The key provisions:
- Rent freeze: Rents are frozen at their 18 June 2019 level for five years. Later increases, including previously agreed stepped or index-linked rents, are void.
- Rent ceilings: Nine months after the law takes effect, tenants can demand a reduction if their rent exceeds the statutory ceiling by more than 20%.
- Modernisation surcharges: Modernisation costs may only be passed on up to 1.00 euro per square metre and must be reported to the Investitionsbank Berlin (IBB).
- Exceptions: New buildings completed on or after 1 January 2014 and publicly subsidised housing are exempt.
The path to the rent freeze
The law followed years of debate about Berlin's tight housing market. Rents in the capital had risen sharply since around 2009, increasing political pressure. The red-red-green coalition considered the federal rent brake introduced in 2015 insufficient. Berlin's rent cap is the state's own response: it is designed to halt rent increases for five years. Politically, the law remains highly controversial.
Practical consequences for owners
Landlords face immediate obligations and financial risks. The rules change the basis for investment calculations and market trends for years to come.
Within two months of the law taking effect, landlords must proactively inform their tenants about the relevant reference-date rent. The same applies before signing new leases. Violations can be fined up to 500,000 euros.
When a tenant changes, the new rent may not exceed either the rent agreed on 18 June 2019 or the applicable ceiling, whichever is lower. This significantly limits income potential on vacated apartments.
The strict cap on modernisation surcharges is likely to make planned energy-efficiency upgrades uneconomical for many owners. In the long run, this risks an investment backlog and deteriorating building fabric.
Which boroughs are most affected?
Although the rent cap applies citywide, the impact varies by location. In high-priced boroughs such as Mitte or Charlottenburg, where existing rents already exceed the new ceilings, a wave of reduction requests is expected after the nine-month waiting period. In up-and-coming areas like Neukoelln or Friedrichshain, where rental growth was strong in recent years, future upside is abruptly cut off. Whether you own apartments in Berlin or are planning an acquisition, checking the specific rent ceiling for your property is essential.
Constitutional concerns
The legal future of the rent cap is uncertain. Leading jurists and the parliamentary opposition question whether Berlin has the legislative authority to pass such a law. A challenge before the Federal Constitutional Court is widely expected. For investors and owners, this means a period of considerable legal uncertainty. Until a court ruling, however, the rules must be followed strictly to avoid penalties.