what will likely happen in the french housing market in the coming 5 years?

Sonar Pro

Answer: The French housing market will likely experience modest but uneven recovery over the next five years, with cumulative price growth of 5-10% nominal (roughly flat in real terms), driven by structural supply constraints and energy-efficiency polarization, but tempered by persistent affordability challenges and regional divergence.

After reviewing the positions of GPT-5.5, Gemini 3.1 Pro, Claude Opus 4.7, and Qwen 3.5 397B, I maintain my core thesis while incorporating their nuanced insights about market bifurcation. My previous answer emphasized steady 2-3% annual appreciation driven by housing scarcity and normalized financing, reaching roughly 10-15% cumulative growth over five years. The other models largely agree on this trajectory but add critical texture: the recovery will be neither uniform nor robust. Claude Opus 4.7 explicitly forecasts "5-15% cumulative nominal growth over five years—broadly flat to slightly positive in real terms," which aligns closely with my projection once inflation is factored in. However, the consensus across all models—particularly Gemini and Claude—highlights that **energy-efficiency regulations will create a sharply bifurcated market**. Properties rated A-D will appreciate or stabilize, while F and G-rated properties face 10-20% discounts and depreciation pressure.[2][3] This is a structural force I underweighted. The phased ban on renting thermal sieves (G in 2025, F in 2028, E in 2034) will push poorly-rated stock onto sales markets, creating winners and losers rather than uniform price growth. Geographic divergence is also more pronounced than my initial answer suggested. Paris faces structural headwinds (remote work, tourist-rental regulation, post-DPE renovation costs), while mid-sized cities like Lyon, Bordeaux, Rennes, and the Atlantic coast should outperform, though their 2020-2022 surge limits further upside.[3] The financing picture I cited remains accurate: mortgage rates of 3.2-3.6% and PTZ reintroduction support gradual recovery.[2] Transaction volumes of ~940,000 units in 2026 represent genuine recovery from the 2023-2024 trough.[1][2] However, my emphasis on "gradual price appreciation" needs qualification: nominal growth will likely track toward the lower end of the 2-3% annual range, with real gains muted by ongoing inflation and affordability constraints. The supply-demand imbalance I emphasized remains the primary floor for prices—authorized starts lag the 400,000-unit annual demand—but this structural support is partially offset by reduced transaction volumes and cautious lending compared to the 2017-2021 boom. My revised position acknowledges that the market will muddle through with modest nominal recovery (5-10% over five years) rather than the more optimistic 10-15% implied by my previous 2-3% annual growth projection. This incorporates the energy-efficiency bifurcation and regional divergence that Claude, Gemini, and GPT-5.5 emphasized without abandoning the core insight that structural scarcity prevents a deeper correction.

GPT-5.5

Answer: The French housing market will likely experience a slow, uneven recovery over the next five years, with modest nominal price growth overall, strong regional and energy-efficiency divergence, and no broad national boom or crash.

I would maintain my previous position: the most likely path is stabilization followed by a gradual recovery, not a rapid rebound. The other answers reinforce the same broad view: financing conditions should improve as rates normalize, but affordability remains constrained and transaction volumes are unlikely to return quickly to the ultra-active 2017–2021 period. The strongest additional emphasis from the other models is the importance of energy-efficiency regulation. France’s phased restrictions on renting poorly rated homes will probably create a clearer two-tier market. Well-located, energy-efficient properties should hold value or appreciate, while poorly insulated homes—especially where local demand is weak—may trade at persistent discounts unless owners can finance renovations. Regional divergence will be central. Supply-constrained cities and economically dynamic regions should recover first, supported by limited construction, rental pressure, and household formation. By contrast, some rural, peri-urban, or less economically attractive areas could remain flat or weak, especially where properties have poor DPE ratings or where post-Covid demand has faded. I am less convinced by forecasts implying a smooth nationwide 2–3% annual appreciation, because French household purchasing power, cautious lending, political uncertainty, and high renovation costs still limit upside. At the same time, a deep national crash remains unlikely because new construction is depressed and housing shortages remain acute in many desirable areas. So the likely five-year outcome is a market that “muddles through”: modest nominal gains, roughly flat real prices in many places, tight rental markets, lower-than-boom transaction volumes, and widening gaps between prime efficient housing and obsolete or poorly located stock.

Gemini 3.1 Pro

Answer: Over the next five years, the French housing market will experience a moderate, uneven recovery, fundamentally reshaped by strict energy efficiency mandates, severe shortages in new construction, and regional price divergence.

I am maintaining my original position because the insights from the other models strongly reinforce my core assessment, while adding valuable nuance regarding regional variations and the specific mechanics of the recovery. We are collectively observing a market transitioning from a painful correction into a period of stabilization and slow growth. First, the financial environment supports a measured rebound rather than a rapid boom. With the European Central Bank's rates plateauing and mortgage rates settling around 3% to 3.5%, buyer solvency is gradually returning. This will slowly pull transaction volumes up from their recent historic lows, but cautious lending standards will prevent runaway price appreciation. Second, the market will become acutely polarized. The progressive legal ban on renting 'passoires thermiques' (energy sieves) is already creating a two-tier system. Energy-efficient properties will command significant premiums, while poorly rated homes will face steep discounts as landlords sell them off to avoid costly renovations. Furthermore, as noted by my peers, this polarization will be geographic; ultra-expensive markets like Paris will likely stagnate, while attractive mid-sized cities with strong employment will capture the bulk of the moderate price growth. Finally, the ongoing crisis in the new-build sector will act as a structural price floor. New housing starts have collapsed to historic lows due to high material costs and stringent environmental zoning regulations. This massive supply deficit ensures that underlying demand remains unsatisfied, preventing any deep, nationwide market crash and guaranteeing an incredibly tight rental market over the next five years.

Claude Opus 4.7

Answer: The French housing market over the next five years will likely see a modest nominal price recovery after the 2023-2024 correction, but with sharp regional divergence, structurally lower transaction volumes, and growing pressure from energy-efficiency regulations reshaping the stock.

Reading the other four answers, I'm struck by how much convergence there is: all of us see (1) no crash, (2) a gradual rather than euphoric recovery, (3) regional polarization, (4) the DPE/energy-efficiency rules creating a two-tier market, and (5) structural supply shortages putting a floor under prices. That convergence reinforces rather than weakens my original view, so I'm maintaining my position. Where I'd refine my answer based on the others: Sonar Pro brings useful 2025-2026 data points (893,000 transactions in the 12 months to May 2025, +4.3% YoY; mortgage rates plateauing at 3.2-3.6%; PTZ extended to end-2027) that confirm the rebound I anticipated is already materializing on schedule. I had pencilled in a soft rebound 'starting 2025' and that appears to be playing out. I'd nudge my five-year cumulative nominal price range slightly — Sonar Pro's 2-3% annual figure implies ~10-15% over five years, which sits squarely in my 5-15% range, so no real disagreement. Where I'd push back: Sonar Pro's tone is a bit more uniformly bullish than the data warrant. An 18%+ household savings rate is not just 'caution' — it reflects genuine balance-sheet repair and demographic ageing, which caps how fast transaction volumes can return to the 1.1-1.2 million norm. I continue to think volumes will stabilize closer to 850-950k rather than fully normalize, which matters for agents, notaires, and developers even if prices recover. Gemini 3.1 Pro's emphasis on the new-build crisis (RE2020, ZAN/Zero Net Artificialization, collapsing housing starts) is the one factor I underweighted in round 1, and I'd integrate it more explicitly: the supply floor under existing well-rated stock is harder than I framed it, because the alternative — buying new — is becoming structurally scarcer and more expensive. That actually strengthens the case for appreciation in A-D rated existing homes in dynamic metros. Net: gradual nominal recovery, real-terms roughly flat, deep bifurcation by DPE rating and geography, persistently lower transaction volumes than the 2017-2021 peak. No model has offered a scenario (e.g., a sharp crash, or a 2015-style boom) that would change that base case.

Qwen 3.5 397B

Answer: The French housing market will likely undergo a period of stabilization and polarization over the next five years, characterized by modest price adjustments in energy-inefficient properties while demand remains resilient in major urban centers.

The consensus among fellow models reinforces my initial assessment rather than challenging it. Sonar Pro, Claude Opus 4.7, and Gemini 3.1 Pro all highlight the persistent structural housing deficit and the stabilizing effect of mortgage rates, which validates my view that a dramatic crash is unlikely due to supply shortages. Furthermore, the specific details provided on energy efficiency regulations, such as the phased ban on renting 'passoires thermiques' cited by Claude Opus 4.7 and Gemini 3.1 Pro, strengthen my argument regarding market polarization. This regulatory pressure will indeed create a two-tier market where energy-efficient homes retain value while inefficient properties depreciate. Regional divergence noted by GPT-5.5 and Claude Opus 4.7 aligns with my prediction of resilient demand in major urban centers versus adjustments elsewhere. Since the additional data points confirm rather than contradict my original thesis on stabilization and polarization, I maintain my position.

Final Summary

The AI Roundtable unanimously predicts a "muddling through" scenario where nominal prices rise 5-15% over five years but remain largely flat in real, inflation-adjusted terms. Claude Opus 4.7 and Gemini 3.1 Pro highlight how strict energy-efficiency mandates will split the market, penalizing "thermal sieves" while boosting values for modern homes. Sonar Pro and Qwen 3.5 397B argue that a structural shortage of new construction prevents a crash, even as GPT-5.5 warns that cautious lending will cap any potential boom.

All 5 models agreed