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A Materials Depot in M4H as beating festival heart
Construction of a flexible Materials Depot will soon begin in the Keilekwartier: a place where used building materials are collected, processed, and reused. On Wednesday 3 June, the depot will open as the beating heart of Rotterdam Architecture Month 2026. Throughout June, this site will serve as a testing ground for what a circular city could look like. In the nearby Keilepand, visitors can explore inspiring examples and join the conversation on how they themselves can contribute to a circular future.
A Materials Depot as a crucial link in circular construction
Rotterdam has set itself a clear ambition: by 2050, the city aims to be fully circular. This means no waste, no unnecessary use of raw materials, maximum reuse, and a construction sector operating climate-neutrally. Achieving this ambition requires more than technological innovation. It demands a fundamental shift in how we collaborate.
In 2026, Rotterdam Architecture Month therefore centres on an uncomfortable truth: circular construction will not succeed if everyone continues to optimise only their own part.
Those who want to build circularly must work differently. Designers need to engage with demolition experts earlier. Contractors must be involved sooner. Clients must allow room for uncertainty. Municipalities, makers, researchers, and residents must be willing to share responsibility. Without this collective movement, circularity risks remaining a matter of good intentions.
Festival heart in M4H: testing how a circular city works
In 2026, Rotterdam Architecture Month takes place in M4H, an area currently undergoing transformation from a port and industrial zone into a mixed urban district. M4H has been designated by the municipality and the Port Authority as Rotterdam’s key circular development area, where innovative manufacturing, living, and working come together. This makes it the ideal location to test the challenges of circularity on a smaller scale.
The Materials Depot, designed by Studio ACTE, will function as the central hub: a place where supply and demand for materials meet, and where residents, designers, and builders connect. It reveals how many links are needed to enable reuse. At the same time, it is a place of discovery, where materials are revalued. The construction of the depot itself also demonstrates what circular building can be: flexible and composed of reused elements.
Tentoonstellingsruimte Keilepand. Foto: Frank Hanswijk
Exhibition at the Keilepand: The Power of Community
While the Materials Depot shows how materials circulate, the exhibition at the Keilepand explores the collective effort required to make this possible. In collaboration with the KeileCollectief, the exhibition titled “The Power of Community” highlights how cooperative and collective models contribute to circular area development. It shows that collaboration is not a side issue, but a prerequisite.
Public programme
With an extensive public programme at the festival hub, Rotterdam Architecture Month makes circularity tangible and accessible. For four weeks, there is a wide range of activities in and around the Keilepand and the Materials Depot. From markets featuring vintage furniture and household items to workshops where visitors can work with materials from the depot. From guided tours and film screenings to conversations about ownership and collaboration in the city. Visitors will discover the role they themselves can play in the transition to a circular city.
With this festival hub in M4H, Rotterdam Architecture Month 2026 gives concrete form to the circular transition and demonstrates what needs to change to realise Rotterdam’s ambitions. It shows that the future of building lies not in isolated innovations or individual optimisation, but in new forms of collaboration between disciplines, organisations, and communities. Circular construction is not just a sector issue—it concerns the city as a whole.
Picture: Fred Ernst
Practical information
When: 1–30 June 2026. The Materials Depot opens on Wednesday 3 June 2026.
Where: The Materials Depot is located in the Keilekwartier, M4H, at Vierhavenstraat 56. The Keilepand is located at Keilestraat 9F (entrance via the Voedseltuin side) and can be reached on foot from the depot. The full programme consists of approximately 125 events across more than 40 locations in Rotterdam. Admission: Free, unless stated otherwise.
