French GDP at 0% in Q1 2026: what nobody connected between construction, real estate, transport and consumer spending

On April 30, 2026, INSEE published its first estimate of French GDP for the first quarter: 0.0% quarterly growth. Zero. No decline, no progression. The French economy did not advance by a single cent between January and March. And most striking: this is not an isolated accident. The four sectors we track at Nexelys had been sending the same signal for months.

This figure is the quarter-on-quarter change in Gross Domestic Product, seasonally adjusted. When it reads 0%, it means the wealth produced in France in Q1 2026 is exactly the same as in Q4 2025. It is the weakest performance in five quarters, after +0.2% in Q4 2025 and +0.5% in Q3 2025 (INSEE, quarterly national accounts, April 30, 2026).

As recently as mid-April, the Banque de France was forecasting growth up to +0.3%. INSEE was expecting +0.2%. Everyone was wrong.

What stalled, concretely?

To understand what happened, we need to break this 0% down. GDP is the sum of everything France produces. It is split into major components: what households consume, what companies and the State invest, what France exports minus what it imports, and the change in inventories.

In Q1 2026, all components of domestic demand declined simultaneously:

Household consumption fell by -0.1%, after +0.4% in the previous quarter (INSEE). It is the first contraction since Q3 2024. Households cut their goods purchases under the effect of higher energy prices, driven by the Middle East conflict (Brent crude went from $60 in late 2025 to over $95 in Q1 2026, before falling back to around $72 after the April ceasefire).

Investment (what economists call GFCF, Gross Fixed Capital Formation, i.e. purchases of machinery, equipment, buildings and software by companies, households and the State) fell by -0.4%, versus +0.3% in Q4 2025 (INSEE). It is the heaviest signal: when companies and households stop investing, it means they no longer believe in the near future.

External trade weighed strongly negatively, with exports in clear decline (INSEE).

The only positive line: inventory rebuilding, notably in aerospace. Without it, GDP would have been negative.

Construction: the main brake, and it is no accident

The number one driver of GDP stagnation, according to INSEE, is construction. The sector's value added declined by -1.5% in Q1 2026. This is the steepest drop of all branches of activity, and it especially hits public works.

Marie Leclair, head of the National Accounts Department at INSEE, points to a phenomenon potentially linked to the electoral cycle (local authorities, in pre-election periods, tend to postpone the launch of new projects). But at Nexelys, we see a more structural cause.

Our data show that development permits (the administrative authorisations preceding subdivision and road works) collapsed by -26% year-on-year in Q1 2026 (SITADEL/SDES, Ministry for the Ecological Transition). Demolition permits followed the same path, at -21.6%. These indicators, which we publish monthly in our newsletters, had been flagging an air pocket since late 2025.

At the same time, construction costs are not falling. The BT01 index (the national reference index for all-trade building costs, published by INSEE) stands at 136.1, up +2.4% year-on-year. The BT47 index (electricity costs in building) jumps +4.4%, driven by the surge in copper on the London Metal Exchange (around $9,200/t in May 2026, +7% year-on-year, source: LME/Trading Economics).

Real estate: new-build is in crisis, and it is contaminating everything else

The French real estate market is living two opposite realities this spring 2026.

On one side, the existing market is holding up better: 12-month cumulative transactions are climbing back to 980,000 units (Nexelys Q2 2026 estimate, versus 907,000 a year earlier, i.e. +8% year-on-year; underlying source: Notaires de France). Prices per m² for existing apartments are stabilising around €11,619/m² in Q2 2026 estimate (source: INSEE-Notaires index, Q4 2025 actual at €11,555/m²).

On the other, the new-build market is breaking down. The FPI (Federation of Property Developers) has just published its Q1 2026 figures: 19,050 reservations, falling below the symbolic threshold of 20,000 quarterly sales, down -14.3% versus Q1 2025 (FPI/SDES, May 2026). The 2020-2026 average was 26,711 sales per quarter.

Why is this linked to GDP? Because new housing is construction (which contributes directly to GDP) and household investment (which is part of GFCF). When reservations fall by 14%, housing starts follow 6 to 12 months later. It is a time bomb for 2027.

The mechanism is well known: housing loan rates are climbing again (to 3.30% in April 2026, versus 2.80% in January, source: Banque de France), driven by the rise in the 10-year OAT (France's 10-year benchmark government bond, now at 3.75%, up +49 basis points year-on-year, source: Agence France Trésor, May 2026). Households lose borrowing capacity, developers no longer sell, and projects do not start.

Transport: volumes are holding, but carriers are collapsing

This is the most puzzling paradox of Q1 2026.

On the volumes side, things are fine: heavy-truck traffic on motorways is stable (0.0% year-on-year), light-vehicle traffic is up +0.8%, and the turnover index for transport and warehousing holds at 123.2 (INSEE, base 100 = 2021, +0.2% year-on-year).

But on the sentiment side, it is a fall. The business climate in road freight transport (TRM, i.e. trucking, measured by INSEE's monthly business survey of company managers) drops to -12 points, well below the long-run average. Activity outlook plunges to -17.5 points. This is the lowest level since 2020.

Why this dissonance? Because trucks are running, but carriers are no longer making money. Higher fuel costs (Brent touched $95+ during the Middle East conflict), collective wage revaluations, and toll costs all erode margins. The Banque de France's May 2026 survey confirms that price revisions in services are concentrated in transport and warehousing, directly exposed to rising diesel costs.

Household sentiment: the signal everyone is underestimating

The final piece of the puzzle is the behaviour of French households.

Inflation rebounded to +2.2% year-on-year in April 2026 (CPI INSEE), after +1.7% in March and +0.9% in February. The acceleration is sharp, driven by energy and housing. But the most alarming figure is not inflation itself: it is household confidence, measured by INSEE's synthetic indicator.

In May 2026, this indicator fell to 83 points, i.e. -6 points below its year-earlier level, and far below the historical average of 100. It is the sharpest drop since the start of the war in Ukraine in 2022. Households are anticipating a deterioration of both their living standards and employment.

And they are acting accordingly. Our data show that food consumption is down -1.1% year-on-year (INSEE, April 2026). Households are cutting their food basket, a budget trade-off not seen since 2023. Meanwhile, durable goods rebound (+2.9%), supported by deferred-renewal effects (better-off households are replacing what they had postponed). This is the sign of a two-speed consumption: some catch up, others sacrifice.

What the four sectors say together, and what the press didn't connect

Each figure taken in isolation tells a partial story. Here is what reading the four sectors together reveals:

GDP at 0% is not an accident. It is the convergence of four simultaneous fragility signals. Construction in decline, investment subdued, carriers worried despite stable volumes, households making trade-offs on food. It is the first time since mid-2023 that all four sectors send a negative signal at the same time.

The window of opportunity is closing. Credit has returned (rate at 3.30%), but the OAT is rising (3.75%). The ECB is holding rates at 2.75% (deposit rate, on pause since February 2026 after 6 successive cuts in 2024-2025, source: ECB). HICP inflation (the European harmonised index, the one the ECB watches for its decisions) is at +2.7% in France, above the target. As long as that figure does not come back down, the ECB will not move, and long-term rates will stay high.

The Q2 risk is real. The 25% US tariffs on European vehicles, announced by Donald Trump on May 1, 2026, hit the automotive industry and its subcontractors directly (source: TruthSocial, confirmed by Reuters and AFP). The Strait of Hormuz remains a factor of uncertainty despite the ceasefire. And the Banque de France warns in its May 12 survey that services could decline for the first time since March 2025.

Three signals to watch until September 2026

For Q2 and Q3, we are tracking three indicators:

1. The 10-year OAT. If it durably breaks above 4%, housing loan rates will climb back to 3.60-3.80%, and the affordability window will close. First-time buyers hesitating in Q2 risk being locked out by Q4.
2. Household confidence. If the indicator stays below 85 in June-July, the soft-landing scenario will become fragile. Historically, an index below 85 for two consecutive quarters precedes a lasting drop in consumption.
3. The TRM climate. If road freight carriers' activity outlook stays below -15 points in Q2, it is a leading signal of industrial contraction in H2 2026.

This publication is distributed for information purposes only. It does not constitute investment advice or an operational recommendation. The qualitative analyses commit Nexelys SAS. The numerical data come exclusively from public institutional sources.