01 The brief
A city is not a rent slider.
Mietropolis is a small, satirical policy sandbox about a serious problem: how to make a home easier to find, afford and keep without quietly sending the bill somewhere else.
The challenge is to assemble a programme, not find a magic policy. New housing takes time. Buying an existing building changes who owns it. Better tenant protection is not the same thing as another front door. The design keeps those effects separate so that the trade-offs stay visible.
You are a task-force chair with state-level tools, not an all-powerful mayor. Your report card should show access, affordability, building condition, green space and fiscal health side by side. A lower headline rent is not a win if nobody can find a tenancy.
The point is the conversation after the turn. What changed? Who benefited? What arrived late? Which cost did you move into the future? The punchline can be a committee; it should never be a household losing its home.
02 Dated source facts
Same city. Different denominators.
These observations are context, not a secretly calibrated starting state. They come from different dates and statistical scopes. Putting two numbers on the same screen does not make them comparable.
Population / main-residence register
3.331m → 3.917m
Rounded register counts, from end-2000 to 30 June 2026: an increase of 17.6%, not a “3.2 million” starting point.[23]
A different series: the official population estimate is 3.701 million at end-2025; the recent official series is census-2022-based. Do not splice it into the register trend or describe the gap as people leaving Berlin.[7][25]
Exact figures and observation dates
The register records 3,331,232 at 31 December 2000, 3,913,644 at 31 December 2025 and 3,917,196 at 30 June 2026. The first-to-last increase is 585,964 people.[23]
The separate official estimate is 3,700,577 at end-2025, up 15,312 people / 0.4% that year. It measures a different population series.[7]
Design consequence: population is not households. Housing demand also needs household size, income and a suitable dwelling—not a one-person, one-flat shortcut.
Asking rent / 2025 offers
€15.78 /m²/month
IBB’s median advertised net-cold rent: €9.00 in 2016, €15.74 in 2024 and €15.78 in 2025. The latest annual rise was 0.3%, not another uninterrupted surge.[25]
Offers are not signed contracts, and net-cold rent excludes heating and other operating charges.[19][25]
Mietspiegel / 2026 edition
€7.71 /m²/month
The general median for the relevant Mietspiegel sample, published 28 May 2026. It is not the rent facing every mover or the average of every tenancy.[19][25]
This legal comparable-rent reference covers contracts newly agreed or changed in the preceding six years, excluding long-unchanged and price-bound contracts.[25]
Do not subtract these rents to “measure overcharging”. Asking rents and the Mietspiegel have different samples, purposes and reference periods. Neither figure is a warm rent including heating and service charges.[19][25]
Sale prices / nominal condominium offers
Long-run rise. Not a straight line.
- 2016€3,365/m²
- 2022€5,817/m²
- 2024€5,690/m²
- 2025€5,807/m²
IBB’s median asking-price series: 2025 was about 72.6% above 2016, but still slightly below 2022. These are neither achieved transaction prices nor inflation-adjusted returns.[25]
Finance / German new housing loans
Rates rose, eased, then rose again.
- Jan 20221.19%
- Nov 20233.92%
- Jan 20253.30%
- Aug 20263.81%*
Bundesbank new-loan series with initial fixation over five to ten years; national and volume-weighted, not an ECB policy rate or a Berlin mortgage quote.[22]
*August is provisional; release status 1 October 2026. The series excludes certain non-interest costs. Existing fixed-rate debt does not instantly reprice to this rate.[22]
Construction / 2025
A permit is not a key.
11,027 dwellings were completed in 2025, down 28.2% from 2024: 9,524 in new buildings and 1,503 through work on existing buildings.[17]
14,079 dwellings were permitted in 2025, compared with 9,772 in 2024.[25]
The end-2025 backlog contained 48,394 dwellings in residential buildings. That narrower-scope backlog is permitted but uncompleted housing—not a warehouse of empty, move-in-ready flats, and not directly interchangeable with the all-building completion total.[17]
Design consequence: planning, permission, financing, construction and occupation need separate steps. Renovating an existing flat is not automatically a newly completed dwelling.
03 Agreed design / not an implementation certificate
Make a programme.
Then live with its timing.
The campaign is designed around 24 half-year turns over 12 fictional years, with up to two distinct policies per turn. Doing nothing is allowed. There is no timer. A 30–60 minute run is a design target, not a measured playtime.
Six stylised zonesFinite resourcesSeeded replayNo universal win score
Read the city.
Choose a zone, inspect its pressures and the next scheduled deliveries. The map is an approachable schematic, not a geographic or neighbourhood-level forecast.
Choose the trade-off.
The policy menu should stay visible, including ineligible options and the reason they are unavailable. Read the quote before committing: public cost, capacity, legal conditions, expected benefit and delay. Each policy can be chosen at most once in a turn.
Advance half a year.
The model should apply its background pressures, seeded external event and scheduled projects. A project only counts as delivered when it arrives. A ribbon-cutting scheduled after the campaign remains pipeline, not an end-of-term achievement.
Ask why it changed.
The report should attribute changes to events, underlying drift and projects or policies—not credit the last click with the whole rent movement. At the end, compare your path with a no-action replay under the same seed and model assumptions.
Read across the dashboard, not down one score.
- Homes & access
- Planned versus delivered homes; households seeking housing; low-income access. More stock and better matching are distinct goals.
- Rents & burden
- Market asking rent, existing protected rent and representative household burden. A protected tenancy is not the same position as a new search.
- Ownership & upkeep
- Total dwellings versus public/protected stock; condition and energy performance. A transfer also brings maintenance obligations.
- Money & capacity
- Programme budget, debt and debt service; planning and construction capacity. These are incremental programmes, not Berlin’s full public accounts.
- Land & green space
- Finite development opportunities and the recreation or ecological cost of using them. “Empty” on a map does not mean valueless.
- Different constituencies
- Tenant mandate/support and investor confidence are separate, visible indices—not a single partisan approval meter.
The event design uses seed plus turn, independent of how many actions you take. This makes a replay a fairer model comparison; it does not turn it into empirical evidence.
04 The policy menu
Every lever comes attached to something.
All entries below are design assumptions. Benefits are intended model channels, not measured causal estimates. Delays are qualitative here; final costs, magnitudes and eligibility belong in the game’s action quotes, not invented numbers in this guide.
Build & reuse
01
Municipal new housing
The public sector orders actual doors.
- Benefit
- Add new homes and durable affordable/public stock, rather than only subsidising demand.
- Delay
- Multi-year planning, finance and construction pipeline; late starts can deliver after your term.
- Trade-off
- Large upfront public spending or borrowing, land and construction capacity. Maintenance remains a future obligation.
A funding announcement adds planned homes, not occupied homes.
02
Enable private infill / upzoning
More density. Also more meeting minutes.
- Benefit
- Enable additional private homes on finite infill sites by improving development and approval conditions.
- Delay
- Approvals come before delivery. Private response is conditional on rates and project viability, not automatic.
- Trade-off
- Planning and infrastructure demands, density opposition and a possible affordability mismatch in what gets built.
Permission is not a promise that every authorised project will be financed.
03
Cooperative / community land lease
A long lease on a less frantic future.
- Benefit
- Support moderate-scale, lasting affordable supply and community stewardship.
- Delay
- Slower organisation and project development, followed by a real construction lead time.
- Trade-off
- Public land and subsidies have an opportunity cost; land is not a free resource because the city already owns it.
Keep the affordability benefit distinct from the number and timing of new homes.
04
Convert suitable vacant offices
From meeting rooms to living rooms. Subject to plumbing.
- Benefit
- Add dwellings through a distinct conversion project, using a finite pool of suitable buildings.
- Delay
- Feasibility, permission, finance and building work come before occupancy.
- Trade-off
- Conversion costs and suitability constraints limit scale. Not every vacant office can become decent housing.
The reservoir must run down; repeating the policy cannot conjure unlimited offices.
05
Recover unlawful holiday lets
The inspection clipboard returns.
- Benefit
- Return eligible dwellings to ordinary housing use rather than construct new buildings.
- Delay
- Staffing, investigation and enforcement precede any return to residential use.
- Trade-off
- Administrative costs, due process and a finite recoverable pool. Do not treat every holiday let as unlawful.
Track recovered availability separately from newly built physical stock.
Protect & improve
06
Modernise / retrofit
Warmer rooms, not imaginary extra rooms.
- Benefit
- Improve building condition, accessibility and energy performance.
- Delay
- Investment, works and disruption come before benefits; energy-bill savings are scenarios, not guaranteed payback.
- Trade-off
- Upfront costs and possible cold-rent increases or displacement pressure. Subsidy and tenant protection can change who bears the burden.
Modernisation creates no homes. An attic conversion, extension or subdivision would be a separately explicit project, not a retrofit bonus.
07
Targeted housing support
Relief now. A budget line next year, too.
- Benefit
- Relieve the burden on eligible households sooner than a construction project can deliver.
- Delay
- Immediate/near-term relief in the design, but support requires recurring funding.
- Trade-off
- Fiscal cost and possible rent capture when supply is constrained; helping pay the rent does not ensure a suitable home is available.
No direct addition to housing supply. Read access and burden together.
08
Tenant protection / enforcement
A rule is more useful with someone to enforce it.
- Benefit
- Improve compliance and housing stability within available legal powers.
- Delay
- Staffing and enforcement work take time; protection is not an instant expansion of the stock.
- Trade-off
- Administrative cost, limited capacity and legal competence. The game must not offer an unlimited unilateral rent-freeze button.
Berlin’s invalidated Mietendeckel is not a currently valid state-only option; the ruling did not prohibit all rent regulation.[11]
Change ownership, land use & capacity
09
Acquire / socialise large portfolios
The deed changes hands. The building stays put.
- Benefit
- Move existing homes into public/protected governance, potentially benefiting existing tenants; transfer rental income as well as responsibility.
- Delay
- Acquisition is not instant. The socialisation scenario needs law, compensation, finance and an uncertain legal lead time.
- Trade-off
- The selectable compensation assumption changes fiscal cost and legal lead time. Borrowing, debt service, operating costs, upkeep and governance all matter.
Negotiated purchase and Article 15 socialisation are different routes. Neither transfer itself creates physical homes. See the legal context below.[3][20]
10
Tempelhofer Feld edge development
The map is green for a reason.
- Benefit
- Explore a large but finite potential housing scheme, with an explicit affordability mix—not simply a gross unit target.
- Delay
- Explicit consent/legal process before construction, then planning and infrastructure lead times. No click can override statutory protection.
- Trade-off
- Infrastructure spending and irreversible open-space cost in the model; recreation, ecological value and housing access pull in different directions.
This is a conditional scenario, not an approved project or a claim of present permission to build.[4][24]
11
Invest in planning staff / infrastructure
Hire the people who can process the hiring forms.
- Benefit
- Expand the capacity that future programmes need and reduce bottlenecks in later output.
- Delay
- Upfront investment and staffing precede downstream benefits; this is preparation, not immediate delivery.
- Trade-off
- Upfront and ongoing public costs compete with direct projects. Land, finance and construction constraints still remain.
More capacity is not free supply: it helps eligible projects move, rather than awarding homes on its own.
The palette is intentionally plural. Public building, private development, cooperatives, tenant support and ownership reform answer different questions. The design must allow costs and benefits without making any political programme an automatic victory or automatic collapse.
05 Institutions & contested choices
The legal fine print is part of the game.
A referendum is not a title deed. A commission is not a court. An ideas competition is not planning permission.
Socialisation: a mandate, a route, unresolved choices.
26 September 2021 / referendum
The citizen initiative “Deutsche Wohnen & Co enteignen” won a referendum requesting preparation of legislation. The commission records support from 57.6% of all ballots, not merely a proposal invented by one party.[3]
The proposal concerned private companies with more than 3,000 Berlin homes, with exemptions including public and collectively held tenant housing. It did not cover every landlord, and the vote did not itself transfer ownership.[3]
June 2023 / expert commission
The commission majority considered socialisation constitutionally feasible; dissenters questioned proportionality and compensation. That is an expert assessment, not a final court judgment.[3]
Compensation is required. Its lawful amount and financing cannot be treated as settled, nor can the route be reduced to free confiscation.[3]
18 March 2026 / framework law
The law was promulgated on 27 March 2026. Its text requires a separate sector-specific implementing law, takes market value as the starting point for compensation, and schedules commencement 24 months after promulgation.[20]
The framework does not itself socialise a housing portfolio and is not already effective at this guide’s October 2026 evidence date. It establishes neither a final compensation bill nor the outcome of future court review.[20]
Design boundary: expose compensation, borrowing costs, operating costs, rent income, governance and legal delay as scenario inputs. Do not present either zero compensation or inevitable full-market-price compensation as constitutional certainty.
Why Vonovia and Deutsche Wohnen are not two independent piles of homes
Deutsche Wohnen remained a separate corporate entity in its half-year 2026 report. It stated that Vonovia held 81.4% directly and indirectly at 30 June 2026; their domination/profit-transfer agreement took effect on 1 August 2025.[14]
Accounting rule: track groups and subsidiaries, but count a dwelling once. Changing ownership changes governance and the recipient of rental income; it does not duplicate the building. This does not rule out affordability effects from different management or rent policies.
The company report is used for ownership facts, not as an endorsement of its policy advocacy. No Berlin portfolio size is inferred from its shareholding percentage.
Tempelhofer Feld: protected does not mean unused.
The official project page describes statutory protection dating from June 2014, following a referendum. It explicitly says the dialogue process does not decide actual perimeter development.[4]
Berlin announced six prize-winning ideas on 23 June 2025, exploring housing alongside recreation, neighbourhood integration and climate concerns. These are not an approved home count or a construction timetable.[24]
Design boundary: substantial housing development must pass an explicit legal/political and planning gate. Then account for infrastructure, affordability mix and lost open-space value. This overview is not an exhaustive legal statement about every minor installation or special exception.
Rent regulation: powers have boundaries.
On 15 April 2021, the Federal Constitutional Court announced that Berlin’s Mietendeckel was void because federal tenancy legislation had conclusively occupied the relevant legislative field.[11]
That was a ruling about legislative competence, not a finding that all rent regulation—or Article 15 socialisation—is forbidden.[11][3]
06 Transparency, not predictive theatre
Where evidence ends,
the design must say so.
Historical observations help explain the setting. They do not identify an exact policy-to-rent equation. Mietropolis is an illustrative, Berlin-inspired scenario—not an estimated causal model, legal advice or a forecast of Berlin’s public accounts.
Source-backed
Dates, definitions, boundaries.
The factual observations and legal context above retain their source IDs, dates and caveats. Advertised rents, contract references and sale prices stay separate. Different population series are never merged.
Designed, not measured
Costs, response, timing.
Starting households and stock, budgets, elasticities, project yields, behavioural responses and event magnitudes are illustrative assumptions. The prototype's principal assumptions are listed below; none are estimates of actual policy effects.
Non-negotiable accounting rules in the design
- Conserve physical homes. An ownership transfer changes tenure, not total supply. Retrofitting is not construction. Recovering availability and building a new dwelling are separate channels.
- Respect time and finite resources. Land, suitable offices and recoverable holiday lets cannot replenish by clicking again. Permission, funding and delivery must not collapse into the same moment.
- Keep finance distinct from valuation. New borrowing and refinancing respond to interest conditions; every fixed-rate loan does not reprice at once. A lower sale price can coexist with worse mortgage affordability—an intended channel, not a guaranteed outcome.
- Keep access distinct from price. A citywide rent index cannot say whether a particular low-income household can secure an appropriate home. Distribution and matching matter.
- Show the bill and the uncertainty. Public portfolios receive rental income and incur upkeep, financing and governance costs. No policy should improve every dimension without cost.
What a fair comparison can—and cannot—tell you
The agreed design calls for a no-action run under the same external event seed and comparisons across strategies and seeds. These can reveal behaviour inside the model. They cannot establish that a real-world policy caused an equivalent outcome.
Sensitivity should be discussed around interest rates, compensation, construction capacity, demand growth and response assumptions. No tested strategy ranking, precise optimum, policy cost estimate or verified balance claim is asserted in this document.
Nor does a deterministic replay certify correctness. Engine tests, complete campaigns, save/reload checks and browser validation are separate implementation work—not something the source citations prove.
Satire with a clear target
The fictional task force, jokes and any future event headlines are fictional. The targets are forms, bottlenecks, overconfident forecasts and conflicting incentives—not migrants, low-income residents or people needing a home. No invented corruption, unlawful conduct, quotation or motive is attributed to a named real company, party or community.
The technical intent is a static, dependency-light browser game without a runtime backend, accounts or telemetry. This guide itself is a single offline-readable HTML file: no scripts, external fonts or fetched assets are needed to read it. Source links require a connection; the play link requires the adjacent game.
Prototype · numerical assumptions
The model has opinions.
Here they are.
The scenario starts with 3.75 million people, household size 1.9 and 1.73 million long-term available homes in six fictional zones. Those are toy inputs, not a matched Berlin statistical dataset. The gap is not an estimate of real homelessness or empty homes. Recovered holiday lets increase long-term availability, not newly built physical dwellings.
Money, loans and ownership
Programme cash starts at €1.5 billion, with €55 million arriving each half-year and a €6 billion incremental debt ceiling. This is not Berlin's entire budget. Positive-cost projects use cash and then borrowing; operating deficits remain visible. Debt is floating-rate and interest-only within the campaign; outstanding principal is still owed at the end. This deliberate simplification must not be mistaken for real municipal financing.
The new-purchase mortgage index instead uses a 30-year amortising loan, fixed loan-to-value, current model purchase price and rate. It describes a new buyer, not the repricing of every existing fixed mortgage. Rates can rise or fall.
Socialisation transfers a 20,000-home tranche from a finite fictional corporate pool. The two assumptions cost €1.2 billion or €2.8 billion and need at least six or two legal-processing turns. Neither is a legal compensation estimate; cheaper compensation is assumed to take longer, not proven to do so. New municipal homes, the public half of Feld housing and acquired homes all carry incremental rent revenue and maintenance: illustrative €4,000 gross and €2,500 upkeep per home each half-year, before finance.
Delivery, legal gates and scarcity
Municipal housing funds 1,200 homes for €180 million with four processing turns. Private infill starts at 500 homes for €40 million with two turns, adjusted by rates and confidence. Cooperatives fund 400 for €70 million with three turns plus a recurring land subsidy. These are public programme tranches, not estimates of total construction costs.
Three projects can initially progress together; planning investment increases capacity. A delay is a minimum processing time, not a promised date. Queues and fictional court/materials events can extend it. Projects begun too late remain pending rather than being counted as completed.
Feld consent costs €30 million and takes at least four turns. This prototype assumes eventual consent in a conditional law-change scenario; it does not predict a referendum or court result. Building then needs at least five turns, consumes a finite 4,500-home reserve, costs open space and assigns half the homes to protected stock.
Rent, energy and what the game leaves out
Population grows by an illustrative 0.15% per half-year, plus seeded events; household size also changes. Rent responds slowly to housing pressure and rate-driven competition for rentals. There is no autonomous background construction pipeline, demolition, regional commuting or endogenous income model. Consequently the absolute shortage trajectory is deliberately not a forecast, and a limited programme may improve access without making the displayed gap disappear.
Retrofit improves quality but raises cold rents; tenant enforcement moderates that pass-through. Energy cost is a transparent game proxy: €2.80 minus quality × €0.02 per m² per month. The representative cold-rent burden uses a 60 m² flat and €1,875 monthly income. The blended incumbent cohort and low-income access index are fictional measures, not the Mietspiegel, household survey or probabilities. “Warm” burden adds the energy proxy, not every service charge.
Testing exercises accounting, delays, saves and different strategies under identical seeded events. It does not establish which real-world political programme is best. There is no single victory score: compare delivered supply, protected access, household costs, quality, open space and the bill left to the next administration.
07 Future ideas / not implemented
There is always another working group.
Possible later expansions, not implemented features or promised release scope:
- Transport & accessibilityConnect housing choices to journeys, services and public-transport capacity.
- Regional cooperationExplore Berlin–Brandenburg housing, infrastructure and shared planning decisions.
- Vacant-land incentivesDistinguish holding land from developing it; test incentives without inventing instant supply.
- Richer household matchingAdd household types, accessible-home needs and distributional detail beyond representative indicators.
08 Provenance
Sources & evidence
The numbered links preserve the research ledger’s original IDs; gaps are intentional. The list contains the sources actually cited here. Dates below distinguish publication from observation, and excerpts are inherited verified quotations—not translations presented as original wording.
This is a compact source set, not a complete legal or econometric literature review. Live pages may change; their retrieval date is not their publication date. The source links and supporting excerpts below are included in this self-contained guide; the full research archive is retained in the project.
-
[3]Berlin expert commission: Vergesellschaftung großer Wohnungsunternehmen, final report (June 2023)
https://www.berlin.de/kommission-vergesellschaftung/_assets/abschlussbericht_vergesellschaftung-grosser-wohnungsunternehmen-230627.pdf
Expert commission appointed by the Berlin Senate · Publication: 2023-06. Observation: 2021 referendum; 2023 legal assessment. Retrieved: 2026-10-18.
Supporting excerpt (original source wording)
eine Mehrheit von 57,6 % der abgegebenen Stimmen
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[4]Berlin Senate: Dialogprozess Tempelhofer Feld (undated live project page)
https://www.berlin.de/sen/stadtentwicklung/staedtebau/einzelprojekte/tempelhofer-feld
Berlin Senate Department for Urban Development, Building and Housing · Publication: not displayed; No publication date displayed on the retrieved page. Observation: 2014 protection; ongoing project-page description. Retrieved: 2026-10-18.
Supporting excerpt (original source wording)
Das Tempelhofer Feld wird seit dessen Öffnung im Jahr 2010 als Freizeitfläche genutzt und ist seit Juni 2014 durch das Gesetz vor Veränderungen geschützt.
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[7]Berlins Bevölkerungszahl erreicht 3,7 Millionen
https://www.statistik-berlin-brandenburg.de/presse/2026/73-bevoelkerungsfortschreibung-2025-berlin
Amt für Statistik Berlin-Brandenburg · Publication: 2026-06-22. Observation: 2025-12-31. Retrieved: 2026-10-18.
Supporting excerpt (original source wording)
In Berlin lebten Ende 2025 insgesamt 3.700.577 Menschen.
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[11]Bundesverfassungsgericht - Homepage - Act Governing the Rent Cap for Residential Premises in Berlin is void
https://www.bundesverfassungsgericht.de/SharedDocs/Pressemitteilungen/EN/2021/bvg21-028.html
Federal Constitutional Court · Publication: 2021-04-15. Observation: Order dated 2021-03-25. Retrieved: 2026-10-18.
Supporting excerpt (original source wording)
Given that the federal legislator passed conclusive rent legislation in §§ 556 to 561 of the Civil Code
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[14]Deutsche Wohnen SE | Halbjahresbericht 2026
https://ir.deutsche-wohnen.com/media/document/f1513ea4-cb95-454d-944d-337d4fe3c7e6/assets/DE000A0HN5C6-Q2-2026-EQ-D-00.pdf?disposition=inline
Deutsche Wohnen SE · Publication: 2026-08-11. Observation: 2026-06-30. Retrieved: 2026-10-18.
Supporting excerpt (original source wording)
Die Vonovia SE hält zum 30. Juni 2026 81,4 % (indirekt und direkt) der Anteile von Deutsche Wohnen.
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[17]Baufertigstellungen, Bauüberhang und Bauabgang in Berlin und Brandenburg
https://www.statistik-berlin-brandenburg.de/f-ii-2-j
Amt für Statistik Berlin-Brandenburg · Publication: not displayed; No publication date displayed on the retrieved page. Observation: 2025. Retrieved: 2026-10-18.
Supporting excerpt (original source wording)
11.027 fertiggestellte Wohnungen meldeten die Berliner Bauaufsichtsbehörden im Berichtsjahr 2025.
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[19]Berliner Mietspiegel 2026 veröffentlicht - Berlin.de
https://www.berlin.de/sen/stadt/presse/pressemeldungen/pressemitteilung.1674998.php
Berlin Senate Department for Urban Development, Building and Housing · Publication: 2026-05-28. Observation: 2026 edition. Retrieved: 2026-10-18.
Supporting excerpt (original source wording)
Das durchschnittliche Mietniveau im Mietspiegel 2026 liegt bei 7,71 €/m².
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[20]Berlin law gazette — framework law dated 18 March 2026
https://www.berlin.de/sen/justiz/service/gesetze-und-verordnungen/2026/ausgabe-nr-9-vom-2732026-s-137-148.pdf?ts=1774511916
Land Berlin official law gazette · Publication: 2026-03-27. Observation: Law dated 2026-03-18. Retrieved: 2026-10-18.
Supporting excerpt (original source wording)
Entschließt sich der Landesgesetzgeber zu einer Vergesellschaftung von Grund und Boden, Naturschätzen oder Produktionsmitteln zum Zwecke der Daseinsvorsorge, ist die konkrete Ausgestaltung in einem gesonderten bereichsspezifischen Anwendungsgesetz zu regeln.
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[22]Bundesbank SUD118: German new housing loans, initial fixation over 5 to 10 years; 1 October 2026
https://api.statistiken.bundesbank.de/rest/data/BBIM1/M.DE.B.A2C.O.R.A.2250.EUR.N?format=csv&lang=de
Deutsche Bundesbank · Publication: 2026-10-01. Observation: 2026-08 latest. Retrieved: 2026-10-18.
Supporting excerpt (original source wording)
2026-06;3,76;
2026-07;3,78;
2026-08;3,81;Vorläufiger Wert
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[23]Berlin main-residence register — 30 June 2026 report
https://download.statistik-berlin-brandenburg.de/e6710fc4098ecab8/7087df199efb/SB_A01-05-00_2026h01_BE.pdf
Amt für Statistik Berlin-Brandenburg · Publication: 2026-08. Observation: 2000-12-31/2026-06-30. Retrieved: 2026-10-18.
Supporting excerpt (original source wording)
31.12.2000 | 3 331 232
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[24]Internationaler stadt- und freiraumplanerischer Ideenwettbewerb zum Tempelhofer Feld entschieden - Berlin.de
https://www.berlin.de/sen/stadt/presse/pressemeldungen/pressemitteilung.1572667.php
Berlin Senate Department for Urban Development, Building and Housing · Publication: 2025-06-23. Observation: 2025-06. Retrieved: 2026-10-18.
Supporting excerpt (original source wording)
Das Preisgericht hat die eingereichten Arbeiten bewertet und sechs herausragende Entwurfsideen ausgewählt.
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[25]IBB Housing Market Report 2025
https://www.ibb.de/media/dokumente/publikationen/berliner-wohnungsmarkt/wohnungsmarktbericht/2025/ibb-wohnungsmarktbericht_2025_bf.pdf
Investitionsbank Berlin / RegioKontext · Publication: 2026-03; Report status month, not a verified exact release day. Observation: 2016/2025. Retrieved: 2026-10-18.
Supporting excerpt (original source wording)
15,78 EUR/m² lag diese nur geringfügig über dem Vorjahreswert