Berlin Advances Fight Over Big Landlord Portfolios
Berlin has created a general legal framework for the possible transfer of large private assets into public ownership, but no decision has been made to socialise corporate housing portfolios. The framework will not take effect until March 27, 2028, and will require separate sector-specific legislation. At the same time, Deutsche Wohnen & Co enteignen is developing a draft potentially covering about 220,000 apartments. Germany’s federal coalition intends to prevent the states from using such laws, but no federal ban has yet been enacted.
The 2021 referendum transferred no property
In September 2021, 57.6% of referendum participants backed a resolution requiring Berlin’s Senate to prepare legislation for socialising large corporate housing portfolios. Support represented 42.3% of all eligible voters, exceeding the required threshold.
The vote concerned a political resolution rather than a completed statute. It neither changed ownership nor determined compensation.
Socialisation is legally more precise than conventional expropriation. Article 15 of Germany’s Basic Law permits land, natural resources and means of production to be transferred into public ownership or another form of public enterprise. Article 14 governs the taking of particular assets for specific public purposes.
Berlin’s framework seizes no apartments
Berlin’s House of Representatives adopted the framework on March 12, 2026. The statute is dated March 18, was promulgated on March 27 and is scheduled to take effect 24 months later, on March 27, 2028.
It requires any socialisation measure to pursue a public-interest objective, be necessary and proportionate, and provide appropriate compensation. It names no company, building or industry.
A separate implementing law would be required to identify assets, owners, management arrangements and compensation. Market value is designated as the starting point, followed by a balancing of public and private interests.
Berlin’s governing Christian Democratic and Social Democratic coalition plans to seek constitutional review before the framework takes effect.
Campaigners estimate a portfolio of 220,000 homes
Deutsche Wohnen & Co enteignen published the first version of its own statute on September 26, 2025. It would apply to connected private corporate groups holding more than 3,000 apartments in Berlin.
Each group would retain at least 3,000 units. The remaining properties would pass to a new public-law institution called Gemeingut Wohnen.
Municipal housing companies, qualifying cooperatives, charities, church organisations and certain religious entities would be excluded. Campaigners estimate that about 220,000 apartments may qualify, but the number is not a completed government inventory.
The proposal is not final. The campaign is still consulting specialists and preparing separate legislation governing Gemeingut Wohnen. No binding referendum date has been fixed.
Compensation would be spread over a century
Owners would receive transferable bonds issued by the future public operator rather than an immediate cash payment. The bonds would pay fixed annual interest of 3.5% and be repaid through constant annual payments over 100 years. Berlin would guarantee the obligations.
The proposal seeks to have the securities admitted to trading on a regulated market, while rental income from the transferred homes would finance debt service.
The earlier version of this article described the valuation formula too broadly. Average 2011–2013 benchmark values would be used only to calculate land value and then increased by 3.5% annually from 2013. Buildings would be valued separately under a cost-based method.
Campaign estimates suggest aggregate compensation may equal approximately 40–60% of current market value. That range is an estimate rather than a legally established amount and could be altered by courts.
Courts would determine the permissible discount
Berlin’s framework and the campaign draft begin from different positions. The framework makes current market value the starting point. The campaign seeks to exclude much of the appreciation in land values since 2013.
The Basic Law requires compensation but does not expressly require full market value in every socialisation case. Courts would have to determine how far payments may fall below market value, whether century-long repayment is adequate and how creditors should be protected.
The draft would remove most private-law encumbrances from transferred properties while preserving leases, residential rights, hereditary building rights and specified access and utility rights. Secured creditors would pursue their claims through the compensation process.
The expert commission did not eliminate uncertainty
Berlin’s expert commission concluded by majority that socialisation of large housing portfolios could in principle comply with the Basic Law if public-interest, proportionality and compensation requirements were satisfied. Its final report included dissenting opinions and should not be presented as unanimous approval of every element.
A majority also considered that compensation requirements under Article 15 could differ from those governing conventional expropriation. The commission neither established a single permissible payment nor completed a full analysis of the fiscal consequences for Berlin.
Article 15 has existed since 1949 but has never been used for a comparable large-scale socialisation. Germany’s highest courts have not established binding rules for ownership thresholds, compensation or the division of authority between the federation and the states.
The federal coalition plans restrictive legislation
In July 2026, Germany’s Christian Democratic, Christian Social and Social Democratic coalition agreed to prepare federal legislation preventing state-level laws from socialising private rental portfolios.
The agreement is a coalition decision rather than an enacted statute. A bill would still have to pass through government and parliament, while its compatibility with Article 15 would probably be contested.
Federal rules could take effect before Berlin’s framework becomes operative and trigger a constitutional dispute over concurrent federal and state powers.
Housing scarcity sustains political pressure
Berlin’s average asking rent was €15.80 per square metre a month in 2025, only 0.1% higher than in 2024. The apparent stabilisation followed increases of more than 18% in 2023 and about 16% in 2024.
Market-active vacancy in apartment buildings was only 0.3%, compared with the 2–3% generally associated with a balanced housing market.
Berlin’s population has increased by more than 500,000 since 2010 to about 3.9 million. Around 159,000 new apartments were built during the same period, with another 27,000 units created or replaced within the existing stock. The city’s development plan identifies a requirement for 222,000 additional homes by 2040.
Existing rents at large institutional landlords average about €8.50 per square metre, while municipal companies charge less than €7. The gap discourages tenants from moving because a new contract can sharply increase monthly housing costs.
Socialisation would not increase housing supply
A transfer could change management practices, limit future rent increases and keep a large portfolio permanently outside the commercial investment market. It would not add homes to the city.
The effect would depend on compensation, renovation costs, energy-efficiency requirements, the quality of public management and the operator’s ability to finance new construction.
Supporters expect rental income to service the bonds without direct borrowing by Berlin. The city’s guarantee nevertheless means that fiscal exposure would not disappear entirely.
Investors face a more concrete legislative risk
An immediate transfer remains unlikely. Berlin’s framework does not take effect until 2028, does not automatically apply to housing companies and may face constitutional review. The campaign statute is unfinished and has not qualified for a referendum.
The risk is nevertheless more concrete than before. A detailed first draft exists, the 3,000-unit threshold has been defined, and a compensation structure has been proposed. The federal government is simultaneously preparing legislation intended to block that route.
Individual condominiums, small private portfolios and most cooperatives are not directly covered. The principal uncertainty concerns large corporate groups, their lenders and institutional buyers.
As International Investment experts report, a transfer of 220,000 apartments is far from inevitable. Berlin’s framework will not operate before 2028, the federal coalition is preparing restrictive legislation, and the campaign text remains a draft. The risk for large owners has nevertheless become more specific because a threshold, proposed operator and payment method now exist. The central weakness is that changing ownership does not increase housing supply. If litigation and bond guarantees reduce Berlin’s ability to finance construction, established tenants may gain protection while households still searching for a home see little improvement.
FAQ: Berlin Housing Socialisation
Has Berlin decided to take corporate apartments?
No. The framework identifies no companies or properties. A housing-specific law or a successful binding referendum would still be required.
When will the framework take effect?
On March 27, 2028, 24 months after promulgation.
How many apartments could be affected?
Campaigners estimate about 220,000, but no final government list exists.
Which owners would be covered?
Connected private corporate groups holding more than 3,000 Berlin apartments. Each group would retain at least 3,000 units.
Would small landlords be affected?
No. Individual properties and small portfolios fall below the proposed threshold.
Would housing cooperatives be included?
Most cooperatives providing homes primarily to their members would be exempt.
How would compensation be paid?
Through transferable 100-year bonds paying fixed annual interest of 3.5%, guaranteed by Berlin.
Would all property be valued at 2011–2013 prices?
No. Those benchmarks apply to the land component. Building values would be calculated separately.
Could compensation be below market value?
Yes. The draft contemplates a substantial discount, but courts would probably determine the permissible amount.
When will the referendum take place?
No binding date has been fixed. The campaign is still finalising the socialisation and public-operator statutes.
Can the federal government stop Berlin?
The federal coalition intends to legislate against state-level socialisation, but no such federal statute has yet been enacted.
Would socialisation create new homes?
No. It would change ownership of existing housing without increasing the number of apartments.