Grand Paris Seine Ouest: public contracts and tenders
Grand Paris Seine Ouest awarded 35 public contracts worth €90.3M where a value is stated since 2019-06-04; the construction work contract held by TERIDEAL (INSEE SIRENE (FR) 410344923) ends on 2027-02-23 (estimated: signed + duration). Source: Arcadium Data, data as of .
At a glance
- Latest award: Maitrise d'oeuvre pour le projet de désamiantage, de séparation des réseaux et de rénovation du parking Belle…, to DELTA, ARGENIUM, 2026-03-06
- Contracts running with suppliers: 3 with an end date in the next 18 months (3 estimated). Next to end: 2027-02-23, TERIDEAL (INSEE SIRENE (FR) 410344923) (estimated: signed + duration, estimated)
Awarded value = the award values the notices state (EUR at the notice date), 15 of 35 awards; framework agreements (a ceiling, not spend) and implausible values are left out.
1 of these awards is a joint procedure with other buyers. Their value covers the whole group, so it is not counted in this buyer's awarded value; it is shown in the table below as shared.
Buyer
| Field | Value |
|---|---|
| Name | Grand Paris Seine Ouest |
| Country | France |
| Buyer type | Local authority |
| City | Meudon |
| Website | seineouest.fr |
| Sources | BOAMP (France), EU TED |
Top suppliers
| Supplier | Registry number | Website | Awards | Value won alone |
|---|---|---|---|---|
| BOUYGUES ENERGIES ET SERVICES | 775664873 INSEE SIRENE (FR) | bouygues-es.com | 1 | |
| OPENDATASOFT SAS | 538168329 INSEE SIRENE (FR) | huwise.com | 1 | €600k |
| Neurones SA | 331408336 INSEE SIRENE (FR) | neurones.net | 1 | |
| PROLOG INGENIERIE SAS | 329130884 INSEE SIRENE (FR) | prolog-ingenierie.com | 1 | €240k |
| TERIDEAL | 410344923 INSEE SIRENE (FR) | terideal.fr | 1 | |
| ACERSSI | 1 | |||
| ALHYANGE | 1 | |||
| ARGENIUM | 1 | |||
| BATSCOP | 1 | |||
| BELBEOC'H 78 | 1 | |||
| CENTRALPOSE | 1 | |||
| COTEG | 1 | |||
| DEGOUY ROUTES & OUVRAGES - ESE SARL | 1 | €227k | ||
| DELTA | 1 | |||
| ECOTEXTILE SAS | 1 |
Suppliers named on Grand Paris Seine Ouest's award notices (the top 15 of 27); registry number and website where the supplier is linked to its register entry. Winners that could be a private person are withheld.
Contracts ending in the next 18 months
| Ends | Contract | Current holder | Value | End date basis |
|---|---|---|---|---|
| 2027-02-23 | Travaux de requalification des espaces publics de la rue Ernest Renan entre la Porte de Versailles et Corenti… | TERIDEAL (INSEE SIRENE (FR) 410344923), COTEG, CENTRALPOSE, ... | €6.1M | estimated: signed + duration |
| 2027-12-30 | Marché de maitrise d'oeuvre relative aux travaux de rénovation des rues Benoit Malon, Emilie Duployé, Michele… | Land'act, EGIS Villes & Transports | €278k | estimated: signed + duration |
| 2027-12-31 | Location d'un camion aspirateur-chargeur MOVAC pour l'exploitation et la maintenance des dispositifs de colle… | €260k | end date stated | |
| 2028-02-18 | Maitrise d'oeuvre pour le projet de désamiantage, de séparation des réseaux et de rénovation du parking Belle… | DELTA, ARGENIUM | €428k | estimated: signed + duration |
| 2028-03-31 | Prestations de collecte en apport volontaire, enlèvement et traitement des déchets (framework) | n/a | end date stated |
End dates checked against the official notice: 99% right (n=100, 95% CI 94%-100%, 2026-10-26; method).
Award notices of Grand Paris Seine Ouest whose contract period ends in the next 18 months: the end date the notice states, else its start or signature date plus the stated duration. 5 contracts; a framework's value is a ceiling and is not shown.
Open calls for tender
| Deadline | Call for tender | Published | Estimated value | Documents |
|---|---|---|---|---|
| 2026-11-04 | Concession de service public pour la gestion de l'assainissement sur le territoire de GPSO | 2026-09-16 | €42.0M | Tender documents |
| 2026-11-30 | Concession de service public pour la gestion de l'assainissement sur le territoire de GPSO | 2026-10-13 | €42.0M | Tender documents |
Calls with a deadline of 2026-10-28 or later (not awarded yet).
Spend by sector (CPV divisions)
| Sector | CPV | Awards | Awarded value |
|---|---|---|---|
| Architecture and engineering services | 71 | 7 | €2.7M |
| Transport equipment | 34 | 2 | n/a |
| Construction work | 45 | 2 | €75.2M |
| IT services | 72 | 2 | €600k |
| Business services | 79 | 2 | €1.4M |
| Waste, cleaning and environmental services | 90 | 2 | €200k |
| Repair and maintenance services | 50 | 1 | €4.0M |
| Agricultural and forestry services | 77 | 1 | n/a |
Award notices with a named winner, by the main CPV code; value = the total the notices state, in EUR at the notice date; framework agreements (a ceiling, not spend) and implausible values are left out.
Recent awards
Follow this buyer free
Get Grand Paris Seine Ouest's new calls for tender, awards and contracts ending in a free weekly email (Tender Radar free tier: a saved search for this buyer's name in France). The same data is in the REST API and the MCP server.
Sources: BOAMP (France), EU TED, read through their open-data feeds without logging in. Buyer = contracting authority as named on the notice; notices are grouped by the normalised name and country.
Source: Arcadium Data tenders database, 4,131,157 official public procurement notices from EU TED, UK Find a Tender, UK Contracts Finder and national procurement boards, read through their open-data services (no logins). Winners that could be a private person (sole traders) are withheld; buyers are public bodies. Data as of 2026-10-28.
Questions
How many public contracts has Grand Paris Seine Ouest awarded?
Grand Paris Seine Ouest published 35 contract award notices between 2019-06-04 and 2026-03-19; the 15 that state a value add up to €90.3M (official notices, as of 2026-10-28).
Who are Grand Paris Seine Ouest's biggest suppliers?
By contract awards: BOUYGUES ENERGIES ET SERVICES (1), OPENDATASOFT SAS (1) and Neurones SA (1) (as of 2026-10-28). Winners that could be a private person are not named.
Which Grand Paris Seine Ouest contracts end soon?
5 contracts awarded by Grand Paris Seine Ouest end in the next 18 months. The soonest with a named holder is the construction work contract held by TERIDEAL, ending on 2027-02-23 (estimated: signed + duration) (as of 2026-10-28).
Does Grand Paris Seine Ouest have open tenders now?
Yes: 2 calls for tender from Grand Paris Seine Ouest are open today (deadline 2026-10-28 or later) (as of 2026-10-28).
What does Grand Paris Seine Ouest buy?
Most of Grand Paris Seine Ouest's awards are in Architecture and engineering services (CPV 71) (7), Transport equipment (CPV 34) (2) and Construction work (CPV 45) (2) (as of 2026-10-28).
Cite as: Arcadium Data, "Grand Paris Seine Ouest tenders and contracts: 35 awards, suppliers, contracts ending", https://arcadiumdata.io/tenders/buyers/grand-paris-seine-ouest-fr/, data as of 2026-10-28.