Construction of a Bioswale with 30-Year Maintenance
Published 17 March 2026
Location
Den Haag, Netherlands
Suggested bid value
~EUR 750,000
Source
tenderned
Description
The municipality of Den Haag is seeking input for a project involving the design, construction, and long-term maintenance of a bioswale. This market consultation precedes a formal tender, aiming to gauge industry interest and refine the project scope. Contractors specializing in landscaping should consider this an opportunity to influence the eventual tender specifications. The work encompasses not only the initial construction but also a significant 30-year maintenance commitment, including groundwater monitoring and water quality control. This suggests a long-term obligation with potential regulatory compliance requirements.
The inclusion of groundwater monitoring and water quality control elevates the project beyond typical landscaping. It implies specialized expertise in hydrology or environmental engineering, either internally or through subcontractors. The 30-year maintenance period represents a substantial long-term responsibility and risk, which will need careful consideration for budgeting and resource allocation. The absence of a published deadline in the current announcement necessitates proactive monitoring for the actual tender launch.
This market consultation, as a preliminary step, indicates the municipality is open to suggestions and feedback from potential bidders. Contractors should evaluate their existing capabilities in bioswale construction, long-term maintenance programs, and environmental monitoring to determine the feasibility and strategic fit of participating in the actual tender when it is released.
Original description
The municipality intends to contract the design, build, and 30-year maintenance of a bioswale, including groundwater monitoring and water quality control. This tender is a market consultation to assess feasibility and optimize the project for future tendering.