Groupement de mandataires phases SIA 31 à 53 - Évacuation des eaux du bassin versant Avanchet - Réseaux amont et aval et bassin de rétention

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Location: Canton GE
Procuring office: Genève Aéroport

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Awarded

According to the simap publication. Values that are not given are deliberately missing here.

Awarded to

As published on simap.ch: winner and price (with or without VAT, as stated).

Award of 10.12.20253 bids
- Perreten & Milleret SA, Carouge (GE)CHF 3’986’980.00 incl. VAT

Awards of this contracting authority

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Services
Requirements
Conditions
Dates
Award criteria

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What is being procured?

Scope of work

Genève Aéroport a élaboré son dernier Plan Général d’Évacuation des Eaux (PGEE) en 2008. Si des mesures ont depuis été mises en œuvre sur le bassin du Vengeron, peu d’interventions ont concerné le Nant d’Avanchet. En 2024, une mise à jour du PGEE de ce bassin a été réalisée et son concept général défini. Un groupement de mandataires est recherché pour les réseaux amont/aval et le bassin de rétention (phases 31 à 53).

Key facts, codes and options

Type of contract: Service
Procedure: Open procedure
Trades: Not evident from the available publication data.
CPV: CPV 71300000 – Engineering services
Options: Not evident from the available publication data.
Variants: Not evident from the available publication data.
Partial offers: Not evident from the available publication data.

TEXFY assessment: Products, installations, quantities, technical specifications and exclusions are not structured fields of the publication. TEXFY does not analyse the free text on them: check the original text and the tender documents.

Market data for this service

From awards published on simap.ch, without rankings and without rating companies.

Comparable awards

Civil and structural engineering, canton of Geneva, last 12 months

61 awards, bids (median): 5.

Awards: Civil and structural engineering

Range of award prices

Civil and structural engineering, canton of Geneva, last 12 months

CHF 70’21410 % of the prices were lower

CHF 320’255Median: half were lower

CHF 989’26410 % of the prices were higher

8 out of 10 award prices were between CHF 70’214 and CHF 989’264.

From 62 published award prices in CHF from 11.11.2025 to 05.11.2026, with or without VAT, as published. A single contract can differ widely.

Official source

Go to the official tender

simap project number: 22866
Publication number: 22866-03
Covered by international agreements: Yes
TED (EU): Publication on ted.europa.eu (opens in a new tab)

Checked against simap: 10.11.2026, 18:02

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