MVRDV's Low-Carbon Mixed-Use Towers in Brussels Receive Construction Permit










MVRDV, a firm based in Rotterdam, has announced a significant advancement in its Tour & Taxis Towers endeavor, a multifaceted development located in Brussels, Belgium. The project, conceived in 2021 for Nextensa, a real estate investor and developer, aligns with a comprehensive land use master plan also crafted by MVRDV. This twin-tower complex, spanning 58,000 square meters, will host a combination of commercial spaces, residential units, and communal facilities, with its tallest point reaching 126 meters. Having recently secured construction approval, the project emphasizes a reduction in embodied carbon through a hybrid structural system and light-weight facade components, deliberately lessening the reliance on concrete in its construction and foundations. The firm utilized its proprietary CarbonSpace software from the initial design phases to inform these sustainable decisions.
The Tour & Taxis Towers initiative by MVRDV is a cornerstone of a Specific Land Use Plan established in 2017 for the district. This plan outlines the area's future development, encompassing residential, commercial, retail, and public spaces, aiming for increased building density while maintaining harmony with the existing urban fabric and engaging with local residents and institutions. MVRDV took on the role of master urban planner in 2019, dedicating two years to refining the plan, translating urban planning guidelines, and architectural, social, and environmental goals into a tangible design and volumetric assessment. Between 2021 and 2025, the team formulated a Visual Quality Plan, engaged in extensive stakeholder consultations, and submitted various permit applications, culminating in the successful acquisition of planning and environmental permits for the Lake Side project in April 2026.
This development, designed with a keen awareness of its environmental footprint, stands as a testament to sustainable urbanism. The project's commitment to reducing carbon emissions, especially pertinent for tall buildings, was facilitated by MVRDV's CarbonSpace software, which estimates embodied carbon during early design stages. The project aims to meet the stringent criteria of the EU taxonomy for sustainable activities, establishing low-carbon design as a core principle. This led to the adoption of a hybrid structural system for the office tower, combining a concrete frame with cross-laminated timber floor slabs. These choices collectively reduce the building's overall mass and the quantity of concrete required for its structure and foundations, resulting in a substantially lower carbon footprint compared to conventional high-rise constructions.
In an era where sustainable development is paramount, MVRDV's Tour & Taxis Towers represent a forward-thinking approach to urban design and construction. By integrating innovative technologies and prioritizing low-carbon solutions from inception, the project not only contributes to the architectural landscape of Brussels but also sets a benchmark for environmentally responsible building practices, proving that ambitious scale and ecological stewardship can coexist harmoniously.