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Concurso Público para Empreitada de obras públicas para a remodelação da rede de saneamento, designadamente o COLETOR 91, abrangendo intervenções na Avenida Dom Pedro V e na zona do Estádio Nacional e

Public Competition for Public Works for the refurbishment of the sanitation network, namely COLETOR 91, covering interventions at Avenida Dom Pedro V and in the area of the National Stadium andEnglish, machine translated

Issued by Serviços Intermunicipalizados de Água e Saneamento dos Municípios de Oeiras e Amadora · via BASE — Portugal public procurement announcements (base.gov.pt)

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Published
2 Nov 2026
Closes
29 Nov 2026, 23:59 UTC
Value
EUR 477,320
Reference
DR 26328/2026
Location
Portugal
Sector
Construction & Infrastructure
Type
works

At a glance

Serviços Intermunicipalizados de Água e Saneamento dos Municípios de Oeiras e Amadora in Portugal has published a tender in construction & infrastructure: “Concurso Público para Empreitada de obras públicas para a remodelação da rede de saneamento, designadamente o COLETOR 91, abrangendo intervenções na Avenida Dom Pedro V e na zona do Estádio Nacional e”. Submissions close on 29 November 2026, 28 days from today. The stated value is EUR 477,320. Quote reference DR 26328/2026 in any correspondence with the buyer. 2 documents are attached to this notice. FreeTender has recorded 10 notices from this buyer since 2026, 3 of them currently open. There are 333 open construction & infrastructure notices in Portugal on FreeTender. Bids are submitted to the buyer through BASE — Portugal public procurement announcements (base.gov.pt), not through FreeTender.

English summary

Machine translated from Portuguese by FreeTender. The original notice below is the binding text.

Objective: Public Competition for Public works to refurbish the sanitation network, namely the COLETOR 91, covering interventions at Avenida Dom Pedro V and in the National Stadium and Contracting entity: Intermunicipalized Water and Sanitation Services of the Municipalities of Oeiras and Amadora (NIPC 680015019) Notice type: Procedure Notice: Public procurement Contract type: Public works contracts CPV: 45232410-9, Construction works of collecting systems Base price: EUR 477,320.00 Proposal deadline: 29-11-2026 (date as given by BASE;

Details

Object: Concurso Público para Empreitada de obras públicas para a remodelação da rede de saneamento, designadamente o COLETOR 91, abrangendo intervenções na Avenida Dom Pedro V e na zona do Estádio Nacional e

Contracting entity: Serviços Intermunicipalizados de Água e Saneamento dos Municípios de Oeiras e Amadora (NIPC 680015019)

Notice type: Anúncio de procedimento

Procedure: Concurso público

Contract type: Empreitadas de obras públicas

CPV: 45232410-9, Obras de construção de sistemas colectores

Base price: EUR 477,320.00

Proposal deadline: 29-11-2026 (date as given by BASE; the exact hour is in the DR announcement)

Diário da República: announcement no. 26328/2026, DR no. 212, series 2

Procurement documents / submission platform: https://community.vortal.biz/Public/public-tender-documents/dXpyUjQ4TU1QU1BkVVVYSUJ4WkJQRkJzWGZuc29UNExGVXdyQjEvMFFBczZGQ094a0U2ZkZJWTk0UE9VemM2S3JOR3NMKzZlZnF6Y2hGc0p4RURKS3c9PVVOZ0gh

Proposals are submitted through the electronic procurement platform named in the announcement (registration required).

Context for bidders

We hold 10 notices from Serviços Intermunicipalizados de Água e Saneamento dos Municípios de Oeiras e Amadora, going back to September 2026 — 3 of them still open. They buy mostly in Construction & Infrastructure, IT & Telecom and Water & Environment. There are 333 open Construction & Infrastructure tenders in Portugal. This one closes in 28 days.

Documents

Before you bid on this tender

A quick checklist to help you decide whether to bid and prepare a compliant submission for this construction & infrastructure opportunity. Always verify the details on the official source.

  • Confirm the exact closing date and time (and time zone) on the official portal — deadlines are strict and can be revised by a corrigendum.
  • Read the full notice and every attached document, including the scope, specifications and any bill of quantities or terms of reference.
  • Check the eligibility criteria — prior similar experience, annual turnover, certifications and registrations — and make sure you qualify before investing effort.
  • Prepare any earnest-money deposit (EMD) or bid security and the required formats early; missing or wrongly-formatted documents are a common cause of rejection.
  • Note how bids must be submitted (online or physical), in what format, and whether a digital signature or portal registration is required.
  • Watch for corrigenda and clarifications right up to the deadline — requirements and dates can change.
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