Public contracts of Nantes Métropole · 2026

Communes de Saint Sébastien sur Loire et Vertou

Maîtrise d’œuvre pour l’aménagement de la route de Clisson · Secteur Ouche Catin/Henri Lesage…

€181k

maximum contract amount over 5 years — what was paid on it is not published

Signed on 12 February 2026 · running until about February 2031 · 5 yrs

Ongoing12 Feb 2031

That is at most ~€36k a year on average: a maximum too.

Who won it

Guillaume Sevin PaysagesIngénierie, études techniques · registered office Angers (49100) · headcount 6 to 9 employees · SIREN 904642071

The competition

9 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 171 by amount of the 311 contracts Nantes Métropole published for 2026.

Contract details (procedure, price, amendments, lots)

Procedure : Appel d'offres ouvert

Price : Mixte

Published amendments : 1

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.