NL Landscaping Open

Construction of a Bioswale with 30-Year Maintenance

Published 17 March 2026

location_on

Location

Den Haag, Netherlands

auto_awesome

Suggested bid value

~EUR 750,000

source

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.

Related tenders

NL landscaping

Artificial Turf Replacement at Two Sports Parks

The municipality of Utrecht requires a contractor to replace three artificial turf fields at Welgelegen and M. van Basten sports parks. The subbase will also be replaced on two of the fields.

place Utrecht

schedule 24 Apr

NL landscaping

Purchase, Planting, and Aftercare of Vegetation - Parcel 8

This tender is for the purchase, planting, and subsequent aftercare of vegetation on Parcel 8. It falls under a parcel-based arrangement.

NL landscaping

Framework Agreement: Construction and Maintenance of Artificial Turf Fields

This tender is for the construction of up to four artificial turf football fields with mineral infill, including substructure, drainage, fencing, lighting, and civil works. The project covers fields planned for the summer breaks of 2026 and 2027.

place Hellendoorn

schedule 8 May

NL landscaping

Natura 2000 Habitat Restoration Project - Leusveld

This project involves ecological restoration within the Natura 2000 Voorstonden-Leusveld area, including hydrological improvements and habitat optimization. The contractor must adhere to strict environmental guidelines and collaborate with authorities during execution.

place Leusveld, Gelderland

schedule 5 May

NL landscaping

Construction of Bioswale with 30-Year Maintenance Contract

The municipality intends to contract a Design, Build & Maintain project for a bioswale, including a 30-year maintenance period covering design, construction, management, groundwater monitoring, and water quality control. The goal is to assess feasibility and market capabilities for optimal tendering.

place Den Haag

NL landscaping

Construction of Artificial Turf Football Fields

This tender is for the construction of 3.5 artificial turf football fields, one with korfball lines, including associated works and multi-year specialist maintenance.

place Lemmer, Joure

schedule 24 Apr