Hauts-de-Seine · Île-de-France · 322,362 residents
Grand Paris Seine Ouest
€220.6 million spent in 2025.
€684 per resident
What Grand Paris Seine Ouest spends, by policy
The 3 other items (3%)
Source: 2025 accounts of Grand Paris Seine Ouest (DGFiP), by public policy.
Suppliers and recipients
The same €220.6M, by recipient.
Source: 2025 accounts of Grand Paris Seine Ouest (DGFiP).
- Services Automobiles de la Vallee de Chevreuse Savac€18.1M
- Service Assistance Maintenance Location5 contracts€9.1M
- Ondelia2 contracts€4M
- Financiere de Services et Participations (Fispar)€2M
- Engie Énergie Services (Cofely Réseaux ; Cofely Services ;)2 contracts€1.9M
- Société Francilienne d'Espaces Verts€1.4M
- Fermetures Moratin€1.2M
61 contracts signed in 2025 · €49.3M before tax
Why this total differs from the €151.9M paid to companies
These are the amounts of the contracts signed in the year, over their whole length, not what was paid. The money paid in a year also goes to older contracts and to purchases too small to be published (under €40,000 excl. VAT). For a framework agreement, the amount is a ceiling.
Investment and works
€50M of capital spending in 2025 (building, renovation, equipment), €155 per resident.
- Travaux d’entretien, de travaux de rénovation, de travaux neufs et de grosses réparations tous corps d’état…2024–2025 · 3 companies€1.8M
- Prestations d’entretien, de création, de rénovation et de contrôle de la sécurité des aires de jeux…2025 · Société Francilienne d'Espaces Verts€1.4M
- Travaux de mise en peinture de petits mobiliers urbains2023 · Korrigan€600k
- Travaux de requalification du square Léon Blum à Boulogne-Billancourt2025€557k
- "Parquet de dans " du marché tous corps d’état selon une procédure sans publicité…2025 · Harlequin Europe€500k
Largest works contracted since 2023, among published contracts. Amounts planned at signature, often spread over several years.
On top of that, €2.1M paid to other bodies for their own equipment (towns, intercommunalities, associations…).
Source: 2025 accounts of Grand Paris Seine Ouest (DGFiP), by public policy.
Revenue and financing
Revenue: €222.4M · borrowing: €8M · spending: €220.6M.
Source: OFGL, 2025 accounts of the main budget.
Debt and taxes
€222 of debt per resident
1.5 year of savings to repay it
€473 of local taxes per resident
2025 accounts. Debt and taxes: OFGL, consolidated (main and side budgets). Per resident: amount divided by the population (Insee).
The levels above Grand Paris Seine Ouest
Spending per resident in 2025, and what each level pays for.
- IntercommunalityGrand Paris Seine OuestWaste, water, urban transport, economic development€684
- DépartementHauts-de-SeineMinimum income, elderly and disability care, middle schools, county roads€1,248
- RegionÎle-de-FranceHigh schools, regional trains, training, business support€459
Each row: the body’s own spending per resident, the figure at the top of its page (DGFiP). Not to be added up: a grant from one level is spent by another.
Who is part of Grand Paris Seine Ouest
Understanding these figures
Who does what
The intercommunality collects and treats waste, often runs water and sanitation, organises urban transport, and pays part of its revenue back to its member towns.
Why the levels are not added up
The same euro can appear twice: once when a region or a département pays a grant, again when the town spends it. Each page shows its own body’s spending.
Where these figures come from
Spending: the accounts of the main budget published by the DGFiP, by public policy. Revenue, debt and taxes: OFGL. Contracts: published contract data (DECP), amounts planned at signing.
Do you work for Grand Paris Seine Ouest, or sit on its council? A figure to correct, context to add: write to us.
Page edited by Qipu, independent of Grand Paris Seine Ouest · Sources and method
Accounts 2025 (DGFiP, OFGL). The method · See the source