Berlin chose Die Linke, but not necessarily its housing remedy

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Markets

Berlin gave Die Linke its strongest result in the city’s history on Sunday 20th September, doubling its 2023 vote to 25.7% and finishing almost seven points ahead of the CDU. Housing was central to that victory. Some 37% of voters considered Die Linke the party with the best answers on the subject, while its support rose particularly sharply among younger Berliners facing the greatest difficulty finding an affordable home.

The mandate is less straightforward than the result suggests. A post-election Infratest dimap survey found only 37% supporting socialisation of the large housing companies, while 51% opposed it. Five years after 57.6% backed the Deutsche Wohnen & Co Enteignen referendum, Berlin has elected the party most committed to implementing that decision even though majority support for the policy itself has since disappeared.

That contradiction will now follow party leader Elif Eralp into coalition negotiations. Die Linke cannot govern without both the Greens and SPD, whose voters are considerably less persuaded by socialisation. The Greens are formally supportive, but their electorate is divided; SPD lead candidate Steffen Krach said during the campaign that expropriation would not take place under an SPD-led government. A CDU-Green-SPD coalition also remains arithmetically possible.

Before the election, REFIRE expected the diminished SPD to become pivotal; socialisation to remain politically alive but practically obstructed; and the eventual compromise to comprise narrower interventions affecting rents, lettings and portfolio operations. The result supports the first two parts of that analysis, but with an important correction: we underestimated the authority Die Linke would carry into the negotiations. Polling placed it narrowly ahead on 21%; it finished on 25.7%, after making housing the centre of its campaign.

Socialisation may still stall, but the party demanding it is considerably stronger than anticipated. “If Die Linke governs, socialisation will take place,” Eralp said on election night. Whether she can reconcile that promise with her prospective coalition partners, public opinion, Berlin’s finances and constitutional law is now the question upon which the property market must wait.

A mandate with its own contradiction

Two days after the vote, Schick Immobilien assembled three markedly different voices to consider what the result means for owners and investors. Jürgen Michael Schick brought the perspective of a residential investment broker and longstanding industry representative. Sebastian Czaja, the former FDP parliamentary leader and now independent business consultant, concentrated upon coalition arithmetic and legislative competence. Journalist and B.Z. columnist Gunnar Schupelius supplied the bleakest interpretation, arguing that the election confirmed an increasingly hostile climate for private ownership.

Their disagreement was more useful than another rehearsal of the result. Schupelius has long described Berlin as a "brodelndes Labor" — a simmering laboratory of political experimentation more intense than in other German cities. In his view, that experimentation once made Berlin attractive to investors and businesses drawn to its unsettled, fast-changing character; he now believes the balance has tipped, with the fear of political constraint outweighing whatever appeal the city's volatility once held. Czaja expected coalition negotiations, federal legislation and constitutional limits to prevent many of the hardest proposals from taking effect, although he warned that the argument itself could damage confidence. Schick repeatedly returned the discussion to what investors are actually doing.

He offered one striking example. A Berlin developer had told him that backing secured from a UK-US investor at MIPIM in Cannes for a 426-home project was subsequently withdrawn because the investor regarded socialisation as a genuine risk. It is a single account and does not in itself establish a wider market trend. But it does demonstrate how political risk can stop a development before any law changes: an investment committee need only decide that the uncertainty no longer justifies committing its capital.

Berlin multifamily transactions have not otherwise stopped. Schick said Q2 2026 activity remained reasonably steady against comparable periods, while some buyers have described themselves to him as contrarian investors, attracted by prices that already reflect part of the city’s political discount. One institutional owner told him that the company invested “for generations, not legislative terms” and continued to rely upon constitutional protections and the rule of law.

Those reactions are not inconsistent. Political uncertainty can deter the capital needed for an unbuilt scheme while leaving income-producing residential stock investable at the right price.

The socialisation dispute itself may become what Schick called a Windhundrennen: a race between Berlin and the federal government to legislate first. The federal coalition has announced its intention to prevent individual states from socialising housing companies, but no prohibition has yet been enacted and legal scholars question whether ordinary federal legislation could prevent a Land from legislating under Article 15 of the Basic Law.

Czaja expects the federal government to legislate before a new Berlin Senate can complete its own measure. He believes a Left-led government would proceed regardless, producing competing laws that would almost certainly be challenged before the Federal Constitutional Court and leaving the underlying question unresolved for years. He ultimately expects the federal government to prevail and does not believe the housing companies will be socialised. That is a political forecast, not a settled legal outcome. Its investment implication is clearer: implementation may be remote, but uncertainty is immediate.

The first casualty may be development

The webinar’s most valuable distinction concerned who is exposed to what. Developers face the earliest and most direct risk. An unbuilt scheme produces no income, depends upon equity and debt being committed in advance and can become unviable when approvals lengthen or an investor retreats. Berlin’s twelve districts also exercise substantial influence over local development plans, making the political composition of the relevant district more important to an individual site than the citywide result alone.

Large institutional landlords face the headline threat because socialisation is directed at companies owning more than 3,000 Berlin apartments. They also possess the strongest capacity to withstand it: existing cash flow, longer holding periods, specialist legal resources and access to constitutional challenge. That does not make them safe; it makes their exposure different.

Smaller private landlords largely fall outside the proposed socialisation threshold. Their risk lies instead in the accumulation of less dramatic measures: stronger rent supervision, expanded enforcement bodies, a register of individual rents, additional conservation areas and closer examination of suspected excessive rents. Campaign proposals also included higher property-transfer and business taxes, taxation of vacant commercial property and a levy on high-value homes. Some will prove legally difficult or disappear during coalition bargaining, but they show why the election matters beyond the handful of companies facing socialisation.

Many of the loudest rental proposals cannot be enacted by Berlin alone. A general rent cap, restrictions upon index-linked leases, changes to the recoverability of property tax and lower modernisation surcharges require federal action. Measures within Berlin’s own administrative and enforcement powers are less spectacular, but potentially applicable to far more owners.

That produces the election’s property paradox. If political intervention deters construction, it deepens the shortage upon which the value of existing residential stock partly rests. Czaja expressed it with deliberate mischief: if you are an existing landlord, you might vote Die Linke because it keeps your portfolio stable.

The joke contains an uncomfortable truth. The owners most immediately damaged by Berlin’s political direction may not be those already holding thousands of occupied apartments, but those trying to finance and build the next ones. Existing landlords could benefit from the additional scarcity even while facing tighter regulation of the homes they own.

REFIRE: Berlin elected Die Linke to act upon the housing crisis without providing an equally clear mandate for socialisation. Coalition negotiations must now reconcile Eralp’s promise with resistant public opinion, divided prospective partners and an unresolved conflict over legislative competence.

REFIRE’s pre-election expectation of prolonged obstruction and narrower substitute measures remains plausible but Die Linke’s unexpectedly decisive victory means socialisation cannot yet be written off as a bargaining position destined to disappear. The argument may continue through coalition negotiations, rival legislation and constitutional litigation.

Capital will not wait for that process to finish. Developers, institutional holders and smaller landlords already face different versions of the result. If the first consequence is still less construction, Berlin may once again discover that policies intended to restrain existing owners have strengthened the market position of the stock they already possess.