Hauts-de-Seine · Île-de-France · 322,362 residents
Grand Paris Seine Ouest
€223 million spent in 2025.
€692 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.
Where the money goes
The €223M spent in 2025, by who receives it.
Source: 2025 accounts of Grand Paris Seine Ouest (DGFiP).
Contracts state a maximum amount for their whole term, often several years. That amount differs from what was paid. Purchases, services and works paid to companies by the intercommunality in 2025: €151.9M (its accounts).
- Services Automobiles de la Vallee de Chevreuse Savac1 contract over 5 years · at most ~€3.5M a year on average · framework agreement: maximum envelopeup to €18.1M
- Service Assistance Maintenance Location5 contracts over 5 years · at most ~€1.8M a year on averageup to €9.1M
- Ondelia2 contracts over 4 years · at most ~€1M a year on average · framework agreements: maximum envelopesup to €4M
- Financiere de Services et Participations (Fispar)1 contract over 5 years · at most ~€400k a year on averageup to €2M
- Société Francilienne d'Espaces Verts1 contract over 4 years · at most ~€358k a year on averageup to €1.4M
- Engie Énergie Services (Cofely Réseaux ; Cofely Services ;)1 contract over 4.5 years · at most ~€297k a year on averageup to €1.3M
- Fermetures Moratin1 contract over 4 years · at most ~€300k a year on average · framework agreement: maximum envelopeup to €1.2M
60 contracts signed in 2025 · €48.7M before tax
What the intercommunality paid in 2025 for these kinds of purchase, from its accounts
- Vehicle purchasesall suppliers together · contracts in the list: Service Assistance Maintenance Location, Financiere de Services et Participations (Fispar)paid €1.1M
The accounts say how much was paid for each kind of purchase, not to which company. A purchase paid by another public body (joint order, shared service) is not in them.
Why this total differs from the €151.9M of purchases, services and works 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.
Click a building site to see the contract
- 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: €223M.
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€692 per resident
- DépartementHauts-de-SeineMinimum income, elderly and disability care, middle schools, county roads€1,247 per resident
- RegionÎle-de-FranceHigh schools, regional trains, training, business support€465 per resident
Each amount is what the body spends per resident, from its accounts (DGFiP). Do not add them up: part of the money passes from one body to 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.
Elected officials and staff of Grand Paris Seine Ouest: to report a figure to correct or add context, write to Qipu.
Page edited by Qipu, independent of Grand Paris Seine Ouest · Sources and method
Accounts 2025 (DGFiP, OFGL). The method · See the source