Public contracts of Communauté de communes Vendée Grand Littoral · 2025

Maîtrise d’oeuvre restucturation et agrandissement du musée du Cairn

€85k

maximum contract amount over 17 months — what was paid on it is not published

Signed on 6 August 2025 · running until about January 2027 · 17 months

Ongoing5 Jan 2027

That is at most ~€60k a year on average: a maximum too.

Who won it

GanthaIngénierie, études techniques · registered office Poitiers (86000) · headcount 20 to 49 employees · SIREN 444214209

A contract awarded to 6 holders; above, the main holder. With it: Maitrise et Sécurité du Bâtiment, Eco Attitudes Énergies, Ingenierie Diagnostics Études Structures (Ides), Oeb (Ballini Ouest Économie Bâtiment). The amount is the whole contract’s: the DECP does not publish each holder’s share.

The competition

7 bids received

Median for this procedure in 2025: 3 bids, across 48929 comparable contracts. Simplified procedure · awarded to 6 companies

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

Number 21 by amount of the 35 contracts Communauté de communes Vendée Grand Littoral published for 2025.

Contract details (procedure, price, amendments, lots)

Procedure : Adapted procedure: the lighter procedure allowed under the EU thresholds

Price : Forfaitaire

Published amendments : 5

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.