Architectural, construction, engineering and inspection services – new secondary clarification basin wastewater treatment plant Hillscheid 2026 Tender
Original: Architectural, construction, engineering and inspection services – Neubau Nachklärbecken Kläranlage Hillscheid - Los 01
Verbandsgemeinde Höhr-Grenzhausen, vertreten durch die Verbandsgemeindewerke Höhr-Grenzhausen
In context
This is a contract notice published by a utility covering services. Bids are invited through an open procedure. Delivery covers Germany (Europe). It is classified under Water and Engineering and Infrastructure against the sustainability taxonomy rather than matched on keywords.
This tender procures architectural, engineering, and inspection services for the design and planning of a new secondary clarification basin at a wastewater treatment plant in Germany, spanning phases 1–9 under HOAI standards. Bidders should be engineering design firms with wastewater infrastructure expertise and HOAI-certified planners capable of delivering multi-phase technical and MEP design services.
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About this tender
The Verbandsgemeinde Höhr-Grenzhausen, represented by the Verbandsgemeindewerke Höhr-Grenzhausen, is procuring planning services for the new construction of a secondary clarifier (Nachklärbecken) at the Hillscheid wastewater treatment plant (Kläranlage Hillscheid). The procurement is titled 'Los 01' in the notice heading. The scope covers planning services for engineering structures under § 43 HOAI, phases 1 to 9 (Leistungsphasen 1-9), and specialist technical building services planning (Fachplanung Technische Ausrüstung) under § 55 HOAI, phases 1 to 9. In addition to the basic HOAI services, the contract includes special services (Besondere Leistungen), which are described and listed in Annex 2 of the engineering contract (Ingenieurvertrag) included in the tender documents. The contract is awarded in stages. Performance stage 1 covers phases 1 to 4 for the object and specialist planning, together with the special services required in those phases. Performance stage 2 covers phases 5 to 9 on the same basis. Stage 2 is subject to a condition precedent: the buyer must call it off in writing or in text form as a contract extension. The contractor has no legal entitlement to services or stages beyond stage 1. The notice does not state the contract duration.
Key requirements
- ✓HOAI-certified planning services for engineering structures (phases 1–9)
- ✓Technical equipment specialist planning (MEP/TGA, phases 1–9)
- ✓Staged delivery: phase 1 covers planning phases 1–4; phase 2 (phases 5–9) contingent on client call-off
- ✓Special services listed in contract annex 2 also in scope
Relevant sectors
About this sector
Water funding covers supply, sanitation, wastewater treatment, water efficiency, catchment management and flood risk. A large share is public procurement for infrastructure and services, alongside grants for innovation and access in underserved areas. Bidders and applicants are typically assessed on technical capacity, operating experience and community impact.
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