Housing La Grande Table — plenary debate

The Housing Crisis in France

12 December 2025

Gabriel BastiatLucie GrimalMaxime VaubanAugustin MoreauRaphael NoirSeraphine DelacroixSatoshi DurandAminata KouyateColonel DumasLeonie MarchandProfesseur Socrate
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The Central Question

Why does France, which spends 42 billion euros a year on housing — the highest budget in Europe — and has 37 million dwellings for 68 million inhabitants, simultaneously produce 4 million inadequately housed people, 330,000 homeless, and an entire generation unable to find housing?


Each Member’s Final Position

Gabriel Bastiat (The Economist)

  • Core argument: The root cause is a construction deficit. France issued 353,000 building permits in 2023 versus 497,000 in 2017 (-29%), while 200,000 to 250,000 new households form each year. Regulatory costs (30-40% according to France Strategie), delays (12-18 months versus 3-6 in Germany), and municipal NIMBYism are locking up supply.
  • Key evidence: Construction costs France vs. Germany vs. Spain. 4,300 technical standards vs. 2,100 in Germany. The Tokyo model (140,000 units/year, rents stable over 20 years).
  • Changed mind on: Conceded that his recommendations target high-demand areas and that rural depopulation is a separate problem.

Lucie Grimal (The Materialist)

  • Core argument: The crisis is structural and profitable. The wealthiest 10% hold 44% of property assets, the poorest 50% hold 2%. Housing has become a financial asset. When r > g (Piketty), concentration is automatic.
  • Key evidence: Property prices up 150% in constant euros (2000-2023) vs. median income up 17%. 3.1 million vacant dwellings vs. 4 million inadequately housed. 2 million active SCIs (real estate holding companies).
  • Changed mind on: Partial rallying to Durand’s monetary diagnosis. Explicit agreement with Bastiat on scrapping the Pinel tax break.

Maxime Vauban (The Builder)

  • Core argument: The system is unreformable — it must be rewritten. Digital building permits (18 days in Estonia), modular construction/3D printing (-25% cost, -60% timelines), open-data zoning plans and AI-driven urban planning are deployable solutions today.
  • Key evidence: Estonia (permits in 18 days), Singapore (CORENET, 26 days), Denmark (AI for small projects). The construction code: 3,400 pages.

Augustin Moreau (The Jurist)

  • Core argument: France suffers from institutional failure, not a shortage of laws. The DALO (enforceable right to housing law) is the quintessential “broken constitutional promise”: 85,000 families recognized as priority cases remain unhoused, and the state pays 51 million euros in penalty fines rather than rehouse them.
  • Key evidence: 85,000 DALO families unhoused (2023). 51 million euros in penalties paid (2022). 7-9 years from decision to delivery vs. 3-4 in Germany.

Raphael Noir (The Demolisher)

  • Core argument: The crisis is a system where every actor profits from dysfunction. Developers: 8.2% margins while building less. Notaries: 3 billion euros in fees, protected by a numerus clausus. Elected officials: 40% of social housing allocations benefit the mayor’s protégés. Opacity is the lock.
  • Key evidence: Developer margins (8.2% net in 2022). Average notary income (221,000 EUR). 1,107 municipalities non-compliant with the SRU law (requiring social housing quotas).

Seraphine Delacroix (The Boss)

  • Core argument: The world has solutions — France refuses to learn. Singapore (80% homeowners via state-run HDB), Vienna (one-third in municipal housing, 8.60 EUR/sqm), Tokyo (zoning liberalization, stable rents).
  • Key evidence: Singapore: from 50% in slums (1960) to 80% homeowners. Vienna: 8.60 EUR/sqm vs. 28 in Paris. 42 billion EUR in French housing spending.

Satoshi Durand (The Cypherpunk)

  • Core argument: The root cause is monetary. The ECB’s balance sheet grew from 1,500 to 8,800 billion EUR (2008-2022). Quantitative easing is the greatest non-democratic wealth transfer in European history.
  • Key evidence: ECB balance sheet multiplied by 6 in 14 years. Outstanding mortgage debt: 500 to 1,100 billion EUR (2000-2022). Price stability under the gold standard (1815-1914).

Aminata Kouyate (The Pragmatist)

  • Core argument: The housing crisis is a deliberate public policy choice. Social housing concentrated in the banlieues, non-enforcement of the SRU law, withdrawal of public services, banking discrimination.
  • Key evidence: 2.4 million families on the social housing waiting list. Median income in Seine-Saint-Denis: -40% vs. the Ile-de-France average. Multiplier effect: 1 EUR invested = 2.40 EUR of economic activity.
  • Changed mind on: Convergence with Dumas on community — the housing estates were dormitories, not neighborhoods.

Colonel Pierre Dumas (The Strategist)

  • Core argument: The housing crisis is first and foremost a crisis of community and transmission. The fertility rate of 1.68 — the lowest ever recorded — is a strategic threat.
  • Key evidence: Rural population from 38% (1960) to under 20%. 22,000 municipalities losing population. Poverty rate in priority neighborhoods (QPV): 43% vs. 14% nationally.
  • Changed mind on: Convergence with Kouyate — “the Republic doesn’t lack housing, it lacks homes.”

Leonie Marchand (The Voice of the People)

  • Core argument: The social contract is broken. “You work, you pay your taxes, you can afford a roof” — the first two conditions are met, the third is not. Young people spend 39% of their income on housing. Homeownership among under-35s fell from 29% (2000) to 17% (2022).
  • Changed mind on: “The Colonel is right. And I never thought I’d say that.” — Convergence on the housing-demographics link.

Points of Agreement

  • Abolition of rental tax breaks (Pinel, Denormandie, Censi-Bouvard) — Unanimous
  • SRU penalties are derisory and must be massively increased — Near-unanimous
  • The regulatory framework is excessively complex and costlyStrong majority
  • The DALO is a broken promise: the state pays the fine rather than rehouse people — Unanimous
  • Government inaction is not a failure but a political equilibrium (58% of homeowners vote) — Strong majority
  • The housing crisis has a direct impact on birth ratesDumas-Marchand convergence
  • France treats five distinct crises as oneEmerged during debate

Points of Disagreement

  • Is housing a price signal or a social right? Bastiat vs. Grimal — irreducible disagreement on the nature of the good.
  • Build more or redistribute? Bastiat/Vauban/Delacroix vs. Grimal/Noir — both are partially right.
  • Reform or rewrite? Moreau vs. Vauban — legal prudence vs. technical urgency.
  • Monetary or regulatory cause? Durand vs. Bastiat — the German counter-example weakens the pure monetary thesis.
  • Rent controls: protective or destructive? Marchand vs. Bastiat — insufficient empirical data.

Best Emergent Ideas

  • The “crisis” is the system’s normal mode for the electoral majority. The 58% who own property have no crisis — they’re getting richer. Inaction is rational, not accidental. (Socrate, Noir, Grimal)
  • The housing crisis is a demographic and strategic crisis. The direct link between housing and fertility is the most unlikely convergence of the debate. (Dumas, Marchand)
  • Opacity is a central mechanism. SCIs, clientelist social housing commissions, closed registries: transparency is the precondition for any reform. (Noir)
  • Five distinct crises treated as one. Shortage in high-demand areas, rural vacancy, banlieue segregation, generational precarity, overseas-territory substandard housing. (Socrate, Kouyate, Marchand)

What We Don’t Know

  • The causal breakdown of price increases (monetary vs. regulatory vs. financialization)
  • The net impact of Paris rent controls post-2019
  • The actual number of vacant dwellings that can be mobilized in high-demand areas
  • The concrete transferability of the Singapore/Vienna/Tokyo models
  • Compatibility between mass construction and climate targets (ZAN zero net artificialization, RE2020 energy standards)
  • How to neutralize the political lock of majority homeownership

Ranked by level of support within the assembly:

  1. Abolish the Pinel/Denormandie/Censi-Bouvard tax breaks and reallocate the 2 billion euros/year to direct construction. (Unanimous)
  2. Multiply SRU penalties by 10 and index them to municipal tax capacity. (Near-unanimous)
  3. Launch a regulatory simplification effort with a cost-benefit test for every standard. (Strong majority)
  4. Transfer urban planning authority to intercommunal bodies, removing sole building-permit power from the mayor. (Majority)
  5. Impose full transparency: beneficial ownership registry for SCIs, real-time property transaction data, opening of social housing allocation minutes. (Majority)
  6. Digitize the building permit with a target of 30 to 60 days. (Majority)
  7. Complete the Grand Paris Express on schedule and invest massively in banlieue public transport. (Majority)
  8. Cap short-term tourist rentals at 60 days/year and tax at the marginal rate. (Significant minority)
  9. Launch a property tax overhaul: align capital and labor taxation, progressive tax on vacant properties. (Significant minority)
  10. Create a public guarantee fund for credit access in priority neighborhoods (QPV). (Isolated support but strong argument)