Public contracts of Nantes Métropole · 2026

Actualisation d’inventaires sur les 24 communes de la Métropole

: Inventaire des zones humides et éléments structurants sur 5 communes métropolitaines (Bouaye, Saint-Aignan de Grand…

€95k

maximum contract amount over 4 years — what was paid on it is not published

Signed on 21 July 2026 · running until about June 2030 · 4 yrs

Ongoing21 Jun 2030

That is at most ~€24k a year on average: a maximum too.

Who won it

Hydro ConceptIngénierie, études techniques · registered office Les Achards (85150) · headcount 20 to 49 employees · SIREN 408464592

The competition

5 bids received

Median for this procedure in 2026: 3 bids, across 8946 comparable contracts. Open tender · awarded to 1 company

Open data publishes the winner and the bid count — never the identity of unsuccessful bidders.

Number 209 by amount of the 311 contracts Nantes Métropole published for 2026.

Other contracts of Hydro Concept in Nantes Métropole

Actualisation d’inventaires sur les 24 communes de la Métropole des…2025 · maximum over 4 years141€k

Contract details (procedure, price, amendments, lots)

Procedure : Appel d'offres ouvert

Price : Forfaitaire

Published amendments : none

Subcontracting declared : no

Environmental considerations : Critère environnemental

Contracts above €40,000 excluding VAT, as declared when they are awarded (DECP): contract amounts, not payments. Smaller contracts are not published; obviously wrong amounts are set aside.