Designers have access to reuse platforms — so why does circular sourcing still feel so fragile?

Access is not the issue

Anyone working with upcycled or circular interior design knows the familiar advice: “Have you checked the reuse platforms?” And to be fair, those platforms exist. There are online overviews mapping reuse marketplaces, and there are well-established networks of specialised reuse dealers such as Opalis, who have been building expertise around reclaimed materials for years. Access, at least in theory, is not the problem.

And yet, sourcing materials for high-quality, repeatable design still feels uncertain, time-consuming and fragile. Designers scroll, search, call and visit. Sometimes they strike gold. Often they don’t. Even when they do, the same question returns: will this ever happen again?

The real problem is timing, not availability

Most reuse platforms operate downstream, dealing with materials only after demolition has already taken place. By the time materials appear online or reach specialised dealers, crucial decisions have already been made. Choices about dismantling methods, storage conditions and grouping of materials determine what survives — and in what quality.

Designers therefore enter the story halfway through. They work with what the process has left behind, not with what could have been preserved if reuse had been considered earlier.

The Flemish guide Together Towards Circular Demolition (Praktische gids : Samen circulair slopen*) makes this dynamic very clear. Circular ambitions often fail not because reuse platforms don’t exist, but because reuse is only addressed once demolition is already underway or completed. At that point, materials have been shaped by speed, cost and logistics, rather than by future use.

Access without influence creates fragility

This explains a quiet but persistent frustration in circular design. Designers technically have access to materials, but they rarely have influence over the conditions under which those materials become available. They can browse what survived demolition, but they cannot affect how carefully something was dismantled, whether volumes were kept together or whether storage was even considered.

As a result, reuse platforms function more like second-chance markets than as reliable sourcing tools for design-led reuse. Designing with leftovers becomes an exercise in adaptation rather than intention.

Designing with leftovers versus designing with resources

There is a fundamental difference between designing with leftovers and designing with resources. The first depends on coincidence and flexibility. The second depends on continuity and foresight.

High-quality upcycled design needs materials that arrive with a certain consistency. Not necessarily in huge volumes, but with enough predictability to allow designers to develop ideas, test applications and build partnerships. Without that continuity, circular design remains difficult to scale or professionalize.

The missing connection between demolition and platforms

The real gap in the system sits between demolition sites and reuse platforms. Between the moment materials are still part of a building and the moment they appear as “available”. The guide explicitly points to the absence of roles that actively connect future demand to demolition decisions. One of those roles is the materials broker.

A materials broker does not replace reuse platforms or specialised dealers. On the contrary, they strengthen them. By identifying reuse potential before demolition starts, and by aligning dismantling, storage and timing with known or anticipated demand, they ensure that materials reaching platforms like Opalis are not accidental remnants, but intentional supply.

From scavenging to strategy

For designers, this changes the nature of access entirely. Reuse platforms remain essential entry points, but they become part of a larger, more predictable ecosystem. Instead of asking “what happens to be available right now?”, designers can start asking “what kinds of materials are likely to become available, and under what conditions?”, "for project X I am on the lookout for Y, can you find me this?"

That shift is subtle, but crucial. It moves circular sourcing away from scavenging and towards strategy.

A system problem, not a design failure

What the current system reveals is not a lack of tools, platforms or goodwill. It reveals a lack of alignment between timelines. Reuse platforms, specialised dealers, demolition experts and designers all exist, but they operate on different moments in the lifecycle of materials.

The future of circular design does not lie in building more platforms alone. It lies in connecting them earlier to the processes that decide what survives demolition in the first place. When that happens, designers won’t just have access to materials. They’ll have something far more valuable: materials that arrive with intention, continuity and genuine design potential.

A call to materials brokers (and those who might already be one)

This brings me to a very practical question. If the materials broker is such a crucial missing link, then where are they? Do they already exist, quietly operating between demolition sites, reuse dealers and storage facilities? Are there people who are already mapping upcoming material flows, negotiating ownership, or deciding what gets dismantled with care - but who are simply not visible to the design world?

I would genuinely like to know. And more importantly, I would like to talk.

If you work as a materials broker, or if your role already sits somewhere between demolition, reuse platforms and future applications, I’m curious to learn from you. I want to understand how you work, where you operate, and whether you already collaborate with upcycled or circular designers. If you don’t yet, I’d love to explore why that connection is still missing.

And if you don’t call yourself a materials broker but recognise parts of your work in this description - as a reuse dealer, a demolition expert, a curator of material flows, or someone managing reclaimed materials behind the scenes - this call is for you too.

Because if we want circular design to move beyond coincidence and towards continuity, these conversations matter. Not later, but now. I’m actively looking to connect, exchange insights and learn how this role is taking shape in practice. If you are working in this space, or know someone who is, please reach out. Let’s make this missing link visible - together.

* 'Praktische gids : Samen circulair slopen' is free downloadable via Netwerk Architecten Vlaanderen (NAV).

Header image - photo credits: Image taken by me at the construction site of the new Constructiv building, separation of construction materials